KR102394851B1 - Vehicle having Anti Emulsion Air Management System and Emulsion Elimination Method therefor - Google Patents

Abstract

The air management system (1) of the present invention stores the compressed air generated by the air compressor (31) in the air tank (34) and supplies the compressed air pneumatically to the air management device (30) and the sep cooler (32) to remove foreign substances. Inverter 36, which operates the air compressor 31 so that compressed air is supplied to the inside of the APU 33 that accumulates the emulsion removed from the air, the charging mode of the air tank 34 under the control of the inverter 36, The controller 10 in which the emulsion removal logic divided into the regeneration mode of the Sep cooler 32, the emulsion removal mode of the APU 33, the PR mode of the APU 33, and the residual pressure removal mode of the air compressor 31 is performed ) by including the hot compressed air generated by the air compressor 31 when removing the emulsion of the APU 33 is used.

Description

Vehicle having Anti Emulsion Air Management System and Emulsion Elimination Method therefor

The present invention relates to an emulsion air management system, and more particularly, to a method for removing emulsion in a vehicle to which an anti-emulsion air management system is applied in which the emulsion accumulated in the system is forcibly discharged with compressed air.

In general, a vehicle's air management system (AMS) generates compressed air and supplies the compressed air as a working gas to the full air brake system to manage the compressed air used for braking of commercial vehicles, especially electric buses. do.

To this end, the AMS is an air compressor that generates compressed air, a Separator Cooler that acts as an oil separator that separates moisture and oil in high-temperature and high-humidity compressed air, and an APU that acts as an air dryer that dehumidifies the compressed air ( Air Processing Unit) (or EAPU (Electronic Air Processing Unit)), an air tank charging compressed air, an air line circuit through which the compressed air flows, and a PR (Power Reduction) signal circuit that consumes the compressed air in the air tank as components. do. In addition, the AMS includes a controller for operating and controlling the motor of the air compressor, the discharge port of the sep cooler, the discharge port of the APU, the discharge port of the air tank, and the like.

In terms of the layout of the AMS, the air line circuit connects the air compressor and the sep cooler, the APU and the air tank with a compressed air line, and the PR signal circuit is a PR (Power Reduction) control line with the air compressor, sep cooler and APU. connect

In terms of operation, the AMS implements a charging mode, a regeneration mode, and a power reduction (PR) mode. The charging mode is an operation process in which the high-temperature and high-humidity compressed air discharged from the air compressor is stored in the air tank through the Sep cooler and APU, and pressure is generated in the air tank from atmospheric pressure to 10.0 bar. The regeneration mode opens the regeneration port in the APU when the pressure of 10 bar in the air tank is reached, allows the air tank air to flow back, and catches the moisture in the moist air in the compressed air discharged from the air compressor to remove the moisture contained in the cartridge through the APU exhaust port. It is an operation process for regeneration that restores the dehumidifying function of the cartridge by discharging it to the atmosphere. The PR mode opens the PR port in the APU at the time of the CUT-OUT pressure (stop pressure) and transmits the pressure signal to the air compressor, and operates various systems with compressed air in the air tank for air consumption. It is an operation process that saves power consumption by making it in a no-load state until the CUT-IN pressure (restart pressure) is reached.

Therefore, the AMS is used for cylinder lubrication of air compressors by collecting water and oil separated from compressed air as foreign substances with a sep cooler of centrifugal separation principle, and discharging the foreign substances to the outside through the sep cooler exhaust port opened with the APU PR signal. It minimizes the generation of an emulsion (a mixture of water and oil) even when the engine oil is included in the compressed air.

Domestic Patent Publication No. 10-2016-0056137 (May 19, 2016)

However, the operation mode of the AMS has a limitation in discharging the emulsion (water and oil mixture) generated inside the APU due to the moisture and oil in the compressed air that the Sep cooler cannot remove to the outside (ie, the atmosphere), which is the APU As long as the emulsion accumulates inside, it will inevitably develop as a cause.

In addition, AMS opens the PR port in the APU at the point of cut-out pressure (stop pressure) in PR mode. is having the opposite effect.

As a result, AMS protects against corrosion of rubber applied to valves, oil damage that reduces dehumidification performance due to adhesion of silica gel, the main component of air dryer (or cartridge), and moisture damage that causes corrosion and freezing in winter by condensing on valves and air tanks. can't be free

Therefore, in consideration of the above points, the present invention further performs an emulsion removal mode in which the emulsion in the APU is discharged to the outside using the compressed air of the air compressor in addition to the charging mode, the regeneration mode, and the PR mode, thereby blocking the accumulation of the emulsion inside the APU and , In particular, when the engine is key-off, the air compressor and the APU are connected to the air compressor and the APU to remove the residual pressure by further performing the residual pressure removal mode to prevent the motor overload of the air compressor. An object of the present invention is to provide a removal method.

In the air management system of the present invention for achieving the above object, the compressed air of the air compressor stored in the air tank is filtered out of the foreign substances in the cooler, and then the components of the emulsion are filtered in the APU, and when the emulsion is discharged to the outside An inverter for re-operating the air compressor for a predetermined time so that the compressed air supplied to the inside of the APU is generated is included.

In a preferred embodiment, the inverter forms an electrical signal circuit, and the electrical signal circuit connects the APU electrical signal line leading to the APU, the motor electrical signal line leading to the air compressor, and the Sep cooler and the APU to connect the APU to ON electricity An emulsion removal valve line leading to an emulsion removal valve that opens at an OFF electrical signal while closing at the signal, and connects the air tank and the APU to remove residual pressure leading to a residual pressure removal valve that opens at an OFF electrical signal while closing at an ON electrical signal separated by valve lines.

As a preferred embodiment, the inverter maintains OFF each electrical signal of the APU electrical signal line and the motor electrical signal line in a filling mode for filling the compressed air into the air tank, and the emulsion removal valve line and Each electrical signal of the residual pressure removal valve line is maintained as ON.

As a preferred embodiment, the inverter turns the electric signal of the APU electric signal line from OFF to ON in the regeneration mode in which the compressed air of the air tank flows back to the APU to regenerate the APU, while the motor electric signal line maintains the electrical signal of OFF, and maintains each electrical signal of the emulsion removal valve line and the residual pressure removal valve line ON.

As a preferred embodiment, the inverter switches each electrical signal of the APU electrical signal line and the motor electrical signal line from OFF to ON in the emulsion removal mode for discharging the emulsion in the APU to the outside, and the Each electrical signal of the mulsion removal valve line and the residual pressure removal valve line is maintained as ON.

As a preferred embodiment, the inverter converts the electrical signal of the APU electrical signal line from OFF to ON in the PR mode for discharging the foreign material of the sep cooler to the outside, while turning the electrical signal of the motor electrical signal line to ON maintain, while switching the electrical signal of the emulsion removal valve line from ON to OFF, while maintaining the electrical signal of the residual pressure removal valve line as ON.

As a preferred embodiment, the inverter receives each electrical signal of the APU electrical signal line and the motor electrical signal line in a residual pressure removal mode that exhausts the remaining air in the discharge pipe of the air compressor when the engine is keyed off. It maintains OFF, and while maintaining the electrical signal of the emulsion removal valve line to ON, the electrical signal of the residual pressure removal valve line is switched from ON to OFF.

In a preferred embodiment, the air compressor, the sep cooler, the APU, and the air tank are connected by an air line circuit, wherein the air line circuit is a sep cooler air line connecting the air compressor and the sep cooler, and the sep cooler and an APU air line connecting the APU, and an air tank air line connecting the APU and the air tank.

And the vehicle of the present invention for achieving the above object is an air compressor for generating compressed air, a sep cooler for accumulating foreign substances by purifying the compressed air, an APU for accumulating an emulsion by purifying the compressed air, and the compressed air an air management device comprising an air tank that is stored in a purified state; An inverter for operating the air compressor to generate the compressed air supplied to the inside of the APU for external discharge of the emulsion;

In a preferred embodiment, the inverter is linked to an inverter controller, and the inverter controller performs operation control of the air compressor, opening/closing control of the sep cooler discharge port of the sep cooler, performing opening/closing control of the APU discharge port of the APU, engine It is linked with a controller that detects a key off of a CAN (Controller Area Network), and the air management device is applied to an electric vehicle.

In addition, the emulsion removal method of the present invention for achieving the above object is (A) the compressed air of the air compressor constituting the air management device is filtered in the cooler, and then the components of the emulsion are filtered in the APU. A filling mode that is stored as a tank, a regeneration mode in which the compressed air of the air tank flows back to the APU following the filling mode to regenerate the APU, followed by the regeneration mode to discharge the emulsion in the APU to the outside Step in which the emulsion removal mode, the PR mode for discharging the foreign substances of the sep cooler to the outside following the emulsion removal mode is sequentially performed by the controller after the engine is started; (B) a step of performing the residual pressure removal mode for removing the residual air industry in the discharge pipe of the air compressor by the controller when the engine is key-off; characterized in that it consists of.

In a preferred embodiment, the controller is associated with an inverter, and the inverter forms an electrical signal circuit with the air compressor, the sep cooler, the APU, and the air tank; The electrical signal circuit includes an APU electrical signal line for transmitting ON and OFF electrical signals to the APU, a motor electrical signal line for transmitting ON and OFF electrical signals to the motor of the air compressor, and the air passage between the sep cooler and the APU. An emulsion removal valve line that transmits ON and OFF electrical signals to the connected emulsion removal valve, and a residual pressure removal valve that transmits ON and OFF electrical signals to the residual pressure removal valve that connects the air tank and the air passage of the APU. separated by lines.

In a preferred embodiment, in the emulsion removal valve line, an ON electrical signal is converted to an OFF electrical signal in the emulsion removal mode to open the emulsion removal valve, and the emulsion removal mode is the air compressor for a predetermined time. Compressed air is generated by the re-operation of the APU, and the generated compressed air is supplied to the inside of the APU, and the emulsion accumulated inside the APU is discharged to the outside.

In a preferred embodiment, in the residual pressure removing valve line, an ON electric signal is converted to an OFF electric signal in the residual pressure removing mode to open the residual pressure removing valve, and the residual pressure removing mode is a residual pressure removing mode that forms the residual air pressure The compressed air is discharged to the atmosphere through the APU exhaust port of the APU.

The anti-emulsion air management system of the present invention connects the air compressor and the APU with an electric signal circuit connected to the valve, thereby making it easy to discharge the emulsion to the outside of the APU with anti-emulsion performance by operating the air compressor. In addition, the anti-emulsion air management system of the present invention can more effectively contribute to maintaining full air brake performance by being suitable for an electric bus having a large effect of emulsion.

In addition, the vehicle of the present invention applies an anti-emulsion air management system with enhanced emulsion removal performance, thereby reducing the dehumidification performance due to corrosion of valves applied rubber and adhesion of silica gel, which is the main component of the air dryer (or cartridge). Condensed on valves and air tanks, it is freed from moisture damage that causes corrosion and freezing in winter.

In addition, the emulsion removal method of the present invention forcibly drives the air compressor by controlling the electric signal circuit connected to the valve connecting the air compressor and the APU, and the emulsion inside the APU is removed with hot compressed air by the operation of the air compressor. By discharging, the emulsion removal efficiency is greatly improved. In addition, the emulsion removal logic of the present invention is more effective in improving the performance of the air management system and the performance of the full air brake applied vehicle with improved emulsion removal efficiency.

1 is a block diagram of an anti-emulsion air management system applied to a vehicle of the present invention, FIG. 2 is a circuit block diagram of an APU according to the present invention, and FIG. 3 is an anti-emulsion air management system according to the present invention. A flowchart of the removal method, Figure 4 is an operating state in the charging mode of the anti-emulsion air management system according to the present invention, Figure 5 is the operating state of the APU in the charging mode according to the present invention, Figure 6 is according to the present invention The operating state in the regeneration mode of the anti-emulsion air management system, FIG. 7 is the operating state of the APU in the regeneration mode according to the present invention, and FIG. 8 is an example of application conditions of the emulsion removal mode and the PR mode according to the present invention. , Fig. 9 is an operation state in the emulsion removal mode of the anti-emulsion air management system according to the present invention, Fig. 10 is an operational state in the PR mode of the anti-emulsion air management system according to the present invention, and Fig. 11 is the present invention This is the operating state in the residual pressure removal mode of the anti-emulsion air management system according to

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying illustrative drawings, and since these embodiments are examples, those of ordinary skill in the art to which the present invention pertains may be implemented in various different forms. It is not limited to the embodiment.

Referring to FIG. 1 , a vehicle 1 includes an air management system (hereinafter referred to as AMS) 1-1, and the AMS 1-1 is an air management device 30 for performing anti-emulsion. ) together with a controller 10 and an inverter controller 20 . In particular, the vehicle (1) responds to international discussions of the Kyoto Protocol (1997) and the Bali Roadmap (2007) after the Rio UN Conference (1992), and the Domestic Sustainable Transport and Logistics Development Act (enforced on December 10, 2009) and low carbon It is an electric vehicle such as an electric bus to satisfy the Framework Act on Green Growth (enforced on April 14, 2010).

Specifically, the controller 10 and the inverter controller 20 form a communication circuit using a controller area network (CAN) and operate as the main controller of the AMS 1-1. For example, the controller 10 controls the air management device 30 in a filling mode, a regeneration mode, an emulsion removal mode, a power reduction (PR) mode, and a residual pressure removal mode.

For example, in the filling mode, the pressure of the air tank 34 is generated from atmospheric pressure to 10.0 bar by driving the air compressor 31 . In the regeneration mode, when a pressure of 10 bar is reached, the moisture in the wet air is discharged to the atmosphere by air counterflow. In the emulsion removal mode, the emulsion of the APU (Air Processing Unit) 33 is forcibly discharged to the atmosphere with the compressed air of the air compressor 31 driven for a predetermined time (eg, 40 seconds) during regeneration. In the PR mode, foreign substances collected at the lower end of the sep cooler 32 are discharged to the atmosphere. The residual pressure removal mode prevents the motor overload due to the residual air pressure by discharging the pressure of the pipe connecting the air compressor 31 and the APU 33 to the atmosphere when the engine is key-off. On the other hand, the inverter controller 20 controls the inverter 36 with an electric signal associated with the controller 10 in the emulsion removal mode and the PR mode of the controller 10 .

Specifically, the air management device 30 includes an air compressor 31, a Sep cooler 32, an APU 33, an air tank 34, an emulsion removal valve 35-1, and a residual pressure removal valve 35- 2) and the inverter 36 as hardware, and the air line circuit 37 and the electric signal circuit 38 as a system connection circuit.

In one example, the hardware is an air compressor 31 , a sep cooler 32 , an APU 33 , an air tank 34 , an emulsion removal valve 35-1, a residual pressure removal valve 35-2, and an inverter. (36) is as follows.

The air compressor 31 is an electric air compressor equipped with a motor operated by an electric signal, and is operated (ON) by the control of the controller 10 in the charging mode and the regeneration mode and the controller 10 in the emulsion removal mode It is operated (ON) with an ON electrical signal from the inverter 36 controlled by the connected inverter controller 20 to generate humid high temperature and high pressure compressed air, while the operation is stopped (OFF) in the PR mode and residual pressure removal mode .

The sep cooler 32 separates water and oil (a part of engine oil used for cylinder lubrication of the air compressor) from the humid, high temperature and high pressure compressed air of the air compressor 31 by centrifugal separation principle and collects it inside, It receives the APU PR signal through the inverter 36 and opens the sep cooler exhaust port 32a to discharge the collected foreign substances to the outside (atmosphere).

The APU 33 could not be completely removed by the sep cooler 32, so the emulsion made of water and oil introduced into the inside was forced for a certain period of time (about 40 seconds) in the regeneration mode and the emulsion removal mode followed by the charging mode. The hot compressed air of the driven air compressor 31 is introduced, and the emulsion is discharged through the APU exhaust port 33a opened with the APU PR signal ON from the inverter 36. In particular, the APU exhaust port 33a is an APU residual pressure line port (shown in the figure) connected to the residual pressure removing line 37C opened by OFF of the residual pressure removing valve 35-2 through the inverter 36 in the residual pressure removing mode. is not connected), so that the residual pressure remaining when the engine is turned off is discharged to the outside. In addition, the APU 33 is an APU residual pressure line port (not shown) connected to the emulsion removal valve line 37B opened by OFF of the emulsion removal valve 35-1 through the inverter 36 in the PR mode. The emulsion is discharged toward the Sepcooler (32).

The air tank 34 is filled with up-axial air of the air compressor 31 to 10.0 bar, and compressed air through the air tank exhaust port 34a opened under the control of the controller 10 in the regeneration mode according to the pressure of 10 bar is reached. Backflow drains moisture from the compressed air into the atmosphere.

The emulsion removal valve 35-1 and the residual pressure removal valve 35-2 are solenoid valves, and when an electrical signal is turned ON, the valve is closed, whereas when the electrical signal is stopped (OFF), the valve is opened. In particular, the emulsion removal valve 35-1 is an emulsion removal mode and a PR mode of the sep cooler 32 by switching the electrical signal from ON to OFF or OFF to ON of the inverter 36 linked to the controller 10 in the PR mode. Implements the opening and closing operation for the APU exhaust port (33a) of the APU (33) associated with the APU residual pressure line port and the APU emulsion removal line port together with the cooler exhaust port (32a).

The residual pressure removal valve 35-2 is opened with an OFF electrical signal of the inverter 36 linked to the controller 10 in the residual pressure removal mode due to the KEY OFF of the engine, so that the APU residual pressure line port (eg, APU 4) By opening the APU exhaust port (33a) with the high-pressure air delivered to the burn port), the pressure in the pipeline between the air compressor (31) and the APU (33) is discharged to the atmosphere.

As a result, the operation of the residual pressure removal valve 35-2 removes an error message and a cause of stop due to motor overload when the air pressure in the discharge pipe remains when the motor of the air compressor 31 is driven when the engine key is turned off. .

The inverter 36 sends a motor electrical signal to the air compressor 31 and at the same time turns ON and OFF the electrical signals for each of the emulsion removal valve 35-1 and the residual pressure removal valve 35-2. give.

For example, the air line circuit 37 of the system connection circuit is composed of an air charging line 37A, a PR line 37B and a residual pressure removal line 37C, and the electrical signal circuit 38 of the system connection circuit is It is composed of an APU electrical signal line 38A, a motor electrical signal line 38B, an emulsion removal valve line 38C and a residual pressure removal valve line 38D.

The air charging line 37A is a sep cooler air line 37A-1 connecting the air compressor 31 and the sep cooler 32, and an APU air line 37A connecting the sep cooler 32 and the APU 33 -2), it is divided into an air tank air line (37A-3) connecting the APU (33) and the air tank (34). The PR line 37B connects the APU withdrawal line 37B-1 connecting the emulsion removal valve 35-1 from the APU 33, and the sep cooler 32 to the emulsion removal valve 35-1. The sep cooler is divided into a connection line (37B-2). The residual pressure removing line 37C is an air tank withdrawal line 37C-1 connecting the residual pressure removing valve 35-2 from the air tank 34, and the APU 33 from the residual pressure removing valve 35-2. ) is divided by the APU connection line (37C-2) for connecting.

The electric signal circuit 38 includes an inverter controller 20 linked to the controller 10 and an inverter 36 constituting the electric circuit as the center, an air compressor 31 , an APU 33 , and an emulsion removal valve 35 . -1) and the residual pressure relief valve (35-2). To this end, the electrical signal circuit 38 is divided into an APU electrical signal line 38A, a motor electrical signal line 38B, an emulsion removal valve line 38C and a residual pressure removal valve line 38D. The APU electrical signal line 38A is connected to the inverter 36 and the APU 33 to turn ON the electrical signal to the APU discharge port 33a or the APU circuit (see FIG. 2) in the emulsion removal mode and the PR mode. send it The motor electric signal line 38B is connected to the motor of the inverter 36 and the air compressor 31 to send an electric signal to the motor in the emulsion removal mode and the PR mode. The emulsion removal valve line 38C is connected to the inverter 36 and the emulsion removal valve 35-1 to provide ON and OFF electrical signals of the emulsion removal valve 35-1 in the emulsion removal mode and the PR mode. converts it The residual pressure removing valve line 38D is connected to the inverter 36 and the residual pressure removing valve 35-2 to switch ON and OFF electrical signals of the residual pressure removing valve line 38D in the residual pressure removing mode.

Referring to the detailed configuration of the APU 33 of FIG. 2 , the APU 33 has an air supply port (eg, APU No. 1 port) and an exhaust port for the inflow of compressed air while forming a valve (check valve) into the inside. and a protective valve) with a built-in APU valve body (33-1), a cartridge (33-2) having a built-in desiccant grain that is combined with the APU valve body (33-1) to take water and oil from the inflow compressed air. ), is provided on the body 33-1 and includes an APU exhaust port 33a that communicates with the atmosphere by opening/closing control by the control signal of the controller 10 or the electric signal of the inverter 36.

In particular, the APU valve The body 33-1 further includes an APU circuit connected to the APU exhaust port 33a. The APU circuit constitutes a control circuit with various electrical elements for operation, and the air supply port connected to the sap cooler 32 connected to the air compressor 31 and the APU air line 37A-2 is connected as a purge valve, The purge valve is connected to the APU discharge port (33a) and the PR port for discharging compressed air of 10 bar in the PR mode, thereby changing the opening and closing operation of the APU discharge port (33a) and the PR port.

Meanwhile, FIG. 3 is a flowchart of an emulsion removal method for operating the AMS 1-1 as an anti-emulsion, which will be described in detail with reference to FIGS. 4 to 11 . Hereinafter, the control subject is the controller 10 operated in conjunction with the inverter controller 20 or operated independently to pass through the inverter 36 , and the control object is the air compressor 31 , the Sep cooler 32 , and the APU 33 . , an air tank 34 , an emulsion removal valve 35 - 1 , a residual pressure removal valve 35 - 2 and an inverter 36 .

First, the controller 10 controls the operation of the AMS 1-1 to perform compressed air charging, foreign matter removal, and emulsion removal when starting ON of the engine of the vehicle 1 is detected as in S10, and the AMS The operation control of (1-1) is divided into the charging mode of S20, the regeneration mode of S30, the emulsion removal mode of S40, the PR mode of S50, and the residual pressure removal mode of S60.

In the filling mode of S20, the controller 10 controls the air compressor operation step of S21, the primary electrical signal circuit formation step of S22, the air filling line formation step of S23, the compressed air filling step of S24, the air tank filling pressure reaching step of S25 It implements the charging mode operation divided by .

4, the controller 10 operates the air compressor 31 with the ON signal for driving the motor (S21), and the OFF electrical signal of the APU electrical signal line 38A and the motor electrical signal line 38B With maintenance, the primary electrical signal circuit is formed by maintaining the ON electrical signal of the emulsion removal valve line (38C) and the residual pressure removal valve line (38D) (S22), and the Sep cooler exhaust port (32a) and the APU exhaust port By forming an air filling line by keeping the (33a) closed, the Sep cooler air line (37A-1), the APU air line (37A-2) and the air tank air line (37A-3) are in communication with each other (S23), The compressed air generated by the air compressor 31 is filled with the air tank 34 in a state in which water, oil, and foreign substances are filtered from the sep cooler 32 and the APU 33 (S24), and this compressed air is filled in the air tank It continues until the filling pressure of about 10.0 bar is reached (S25). In this case, the controller 10 exemplifies that the air compressor 31 is directly controlled without being linked with the converter controller 20 in the charging mode of S20, but is linked with the converter controller 20 and the converter 36 like the emulsion removal mode. ) to drive the motor.

Referring to the operating state of the APU 33 of FIG. 5 in the filling mode, the APU 33 introduces the compressed air of the air compressor 31 into the APU No. 1 port, and the introduced compressed air is the cartridge 33-2 ), a large amount of moisture is lost to the surface of the desiccant as it passes through the desiccant grains inside the cartridge and converted into dry compressed air, and the dry compressed air is converted into dry compressed air with the APU body (33-1) built-in valve (check valve and circuit protection valve) to the air tank (34).

Therefore, the filling mode is a process in which the compressed air discharged from the air compressor 31 is stored in the air tank 34, and means a section in which the pressure is generated in the air tank 34 from atmospheric pressure to 10.0 bar.

In the regeneration mode of S30, the controller 10 divides the air compressor operation step of S31, the secondary electrical signal circuit formation step of S32, the air counterflow line formation step of S33, the compressed air discharge step of S34, and the cartridge regeneration completion step of S35. Implements the specified playback mode operation.

Referring to FIG. 6 , the controller 10 operates the air compressor 31 with an ON signal for driving the motor (S31), and converts the ON electrical signal of the APU electrical signal line 38A and the motor electrical signal line 38B ) maintains the OFF electrical signal and maintains the ON electrical signal of the emulsion removal valve line (38C) and the residual pressure removal valve line (38D) to form a secondary electrical signal circuit (S32), Sep cooler exhaust port (32a) The air counterflow line is formed by the closing of the APU exhaust port 33a and the opening of the APU exhaust port 33a (S33). ) to perform the operation of discharging compressed air to the atmosphere (S34), and continuing this compressed air discharge until the set cartridge regeneration is completed (S35).

Referring to the operating state of the APU (33) of Figure 7 in the regeneration mode, the APU (33) after the air tank (34) is filled with dry compressed air flow back from the air tank (34) APU body (33-1) It is sent to the cartridge (33-2) through do. Since the desiccant is regenerated from this, moisture collection of the cartridge 33-2 can be made again in the next filling process.

8, the PR mode consumes power by consuming compressed air in the air tank 34 for various system operations while opening the PR port in the APU so that the pressure signal is transmitted to the air compressor 31 at the cut-out pressure point. There is a difference between controlling and stopping the no-load operation state of the air compressor 31 in which the reduction is achieved until the cut-in pressure is reached, whereas the regeneration mode starts at the cut-out pressure point and stops after controlling until the cut-in pressure is reached. In this case, the cut-out pressure is 10.0 bar and the cut-in pressure is set to 8.8 bar.

Therefore, the regeneration mode following the filling mode opens the regeneration port provided in the APU body 33-1 of the APU 33 in the state in which the 10 bar filling pressure of the air tank 34 is reached to allow the compressed air of the air tank 34 to flow back. By giving, the moisture contained in the cartridge 33-2 is discharged to the atmosphere through the APU exhaust port 33a, and the desiccant of the cartridge 33-2 wetted with moisture is regenerated through the compression generated by the air compressor 31. It refers to the process of continuously filtering the moisture of the air from the APU (33).

In the emulsion removal mode of S40, the controller 10 controls the air compressor stop step of S41, the tertiary electrical signal circuit formation step of S42, the air compressor operation step of S43, the emulsion discharge air line formation step of S44, the emulsion of S45 Implement the emulsion removal mode operation divided into the external discharge step and the step of reaching the operating time of S46.

Referring to FIG. 9 , the controller 10 stops the operation of the air compressor 31 with an OFF signal for stopping the motor or checks the operation stop state ( S41 ). Then, the controller 10 switches the ON electrical signal of the APU electrical signal line 38A and the motor electrical signal line 38B in the ON electrical signal maintenance state of the emulsion removal valve line 38C and the residual pressure removal valve line 38D. to form a tertiary electrical signal circuit so that the air compressor 31 operates as the inverter 36 (S42 to S43). After that, the controller 10 forms an emulsion exhaust air line by closing the sep cooler exhaust port 32a and opening the APU exhaust port 33a (S44), and is generated by the air compressor 31 and the sep cooler 32 ), the compressed air that enters the APU (33) discharges the emulsion of the APU body (33-1) and the cartridge (33-2) from the APU discharge port (33a) to the atmosphere, performing the operation of external discharge of the emulsion. and (S45), this emulsion external discharge is continued until the operating time of about 40 seconds is reached (S46).

Therefore, in the emulsion removal mode following the regeneration mode, when the air signal of the pressure transmitted from the APU 33 to the emulsion removal valve 35-1 is recognized as an electrical signal to the inverter 36, the By delaying the ON to OFF switching of the electrical signal to the air compressor 31 and the electrical signal to the residual pressure removal valve 35-2 for about 40 seconds, which is the operating time of the external discharge of the emulsion from the inverter 36, The accumulated emulsion of the APU 32 with the compressed air of the air compressor 31 driven for 40 seconds is forcibly discharged to the atmosphere through the APU exhaust port 33a.

In the PR mode of S50, the controller 10 performs the air compressor stop step of S51, the 4th electrical signal circuit formation step of S52, the PR line formation step of S53, the foreign material discharge step of S54, the cut-in pressure reaching step of S55, Implement the PR mode operation divided into the start-off detection step of S56.

Referring to Figure 10, the controller 10 stops the operation of the air compressor 31 with an OFF signal for stopping the motor (S51), switching the OFF electrical signal of the emulsion removal valve line 38C and the residual pressure removal valve line In addition to maintaining the ON electrical signal of (38D), the 4th electrical signal circuit is formed by switching the ON electrical signal of the APU electrical signal line 38A and switching the OFF electrical signal of the motor electrical signal line 38B (S52), The opening of the cooler exhaust port (32a) and the closing of the APU exhaust port (33a) form a PR line (S53), and the compressed air of the air tank (34) is the emulsion removal valve line (37B) of the APU (33). After being sent to the sep cooler 32 connected to the sep cooler 32 through the APU emulsion removal line port connected to the sep cooler discharge port 32a, the The operation of discharging foreign substances to the outside is performed at the cut-out pressure point (S54), and the external discharging of these foreign substances is continued until the cut-in pressure is reached (S55).

Therefore, in the PR mode, the APU (33) and the emulsion removal valve (35) in the air tank (34) by opening the emulsion removal valve (35-1) with the ON to OFF switching of the electrical signal with the air signal of the APU (33). The compressed air that has passed through -1) is supplied to the sep cooler 32, and the sep cooler exhaust port cylinder pushed by the compressed air opens the sep cooler exhaust port 32a, so that foreign substances collected at the bottom of the sep cooler 32 are removed. It is discharged to the atmosphere through the sep cooler exhaust port (32a).

Meanwhile, the controller 10 detects engine start-off after reaching the cut-in pressure of S56 in the PR mode. As a result, the controller 10 initializes the emulsion removal method while stopping the operation control of the AMS 1-1 for anti-emulsion along with stopping the PR mode operation if the start-up is not OFF. It is converted to residual pressure removal mode.

In the residual pressure removal mode of S60, the controller 10 implements the residual pressure removal mode operation divided into the air compressor stop step of S61, the fifth electrical signal circuit step of S62, and the residual pressure discharge air line formation step of S63.

11, the controller 10 stops the operation of the air compressor 31 with an OFF signal for stopping the motor (S61), and maintains the OFF electrical signal of the APU electrical signal line 38A and the emulsion removal valve line The 5th electrical signal circuit is formed by maintaining the ON electrical signal of (38C) and switching the OFF electrical signal of the residual pressure removal valve line (38D) (S62), the closing of the sep cooler exhaust port (32a) and the APU exhaust port ( While forming the opening of 33a), the APU residual pressure line port and the residual pressure discharge air line connected to the residual pressure removal line 37C are connected to the APU exhaust port 33a to remove the residual pressure, and then the control is terminated (S63). ).

Therefore, in the residual pressure removal mode following the PR mode, the recognition of the key off of the engine by the controller 10 turns the OFF electrical signal of the inverter 36 into ON so that the residual pressure removal valve 35-2 is opened, and the residual pressure The opening of the removal valve (35-2) is an air filling line ( The pressure remaining in 37A) is discharged to the atmosphere through the APU exhaust port 33a. As a result, residual air pressure, which was the cause of the motor overload error message and motor stoppage, is not formed in the discharge pipe of the air compressor 31 , so that the air compressor 31 generates compressed air through normal motor driving.

Meanwhile, Table 1 below shows the operating states for the charging mode of S20, the regeneration mode of S30, the emulsion removal mode of S40, the PR mode of S50, and the residual pressure removal mode of S60. In this case, the opening of the APU exhaust port in the regeneration operation mode is the APU exhaust port (33a), the opening of the APU exhaust port in the PR operation mode is the opening of the APU emulsion removal line port, and the operation of residual pressure removal when the engine is OFF In mode, the opening of the APU exhaust port means the opening of the APU residual pressure line port.

As described above, the air management system 1 according to this embodiment stores the compressed air generated by the air compressor 31 in the air tank 34 and pneumatically supplies the air management device 30, the sep cooler ( Inverter 36, which operates the air compressor 31 so that compressed air is supplied to the inside of the APU 33 that accumulates the emulsion removed from the compressed air from which foreign substances have been removed with 32), and the air tank under the control of the inverter 36 The emulsion removal divided into the charging mode of 34, the regeneration mode of the Sep cooler 32, the emulsion removal mode of the APU 33, the PR mode of the APU 33, and the residual pressure removal mode of the air compressor 31 By including the controller 10 in which the logic is performed, the hot compressed air generated by the air compressor 31 is used when removing the emulsion of the APU 33 .

1: Vehicle 1-1: Air management system
10: controller 20: inverter controller
30: air management device
31: air compressor 32: sep cooler
32a: Sep cooler exhaust port 33: APU (Air Processing Unit)
33-1: APU valve body 33-2: cartridge
33a: APU exhaust port 34: air tank
34a: air tank exhaust port 35-1: emulsion removal valve
35-2: residual pressure relief valve
36: inverter 37: air line circuit
37A: Air charging line 37A-1: Sep cooler air line
37A-2: APU air line 37A-3: Air tank air line
37B: PR line 37B-1: APU withdrawal line
37B-2: Sep cooler connection line 37C: Residual pressure removal line
37C-1: Air tank withdrawal line 37C-2: APU connection line
38: electrical signal circuit 38A: APU electrical signal line
38B: motor electrical signal line
39C: Emulsion removal valve line 39D: Residual pressure removal valve line

Claims (17)

After the compressed air of the air compressor stored in the air tank is filtered out of foreign substances in the Separator Cooler, the components of the emulsion are filtered in the APU (Air Processing Unit), and when the emulsion is discharged to the outside, it is supplied to the inside of the APU An inverter for re-operating the air compressor to generate the compressed air is included,
The inverter forms an electrical signal circuit, and the electrical signal circuit includes an APU electrical signal line leading to the APU, a motor electrical signal line leading to the air compressor, and an emulsion removal valve connecting the Sep cooler and the APU. An air management system, characterized in that it is divided into a residual pressure removing valve line that leads to a mulge removal valve line and a residual pressure removing valve connecting the air tank and the APU.
The air management system according to claim 1, wherein the re-operation of the air compressor by the inverter is controlled by a time limit.
delete The air management system according to claim 1, wherein the emulsion removing valve and the residual pressure removing valve are solenoid valves.
5. The air management system of claim 4, wherein the solenoid valve is operable to close on an ON electrical signal while open on an OFF electrical signal.
The method according to claim 1, wherein the inverter maintains each electrical signal of the APU electrical signal line and the motor electrical signal line to OFF in a filling mode for filling the compressed air into the air tank, the emulsion removal valve line and Air management system, characterized in that maintaining each electrical signal of the residual pressure removal valve line to ON.
The method according to claim 1, wherein the inverter converts the electric signal of the APU electric signal line from OFF to ON in a regeneration mode in which the compressed air of the air tank flows back to the APU to regenerate the APU, while the motor electric signal line Air management system, characterized in that maintaining the electrical signal of the OFF, and maintaining each electrical signal of the emulsion removal valve line and the residual pressure removal valve line to ON.
The method according to claim 1, wherein the inverter switches each electrical signal of the APU electrical signal line and the motor electrical signal line from OFF to ON in the emulsion removal mode for discharging the emulsion in the APU to the outside, An air management system, characterized in that it maintains ON each electrical signal of the mulsion removal valve line and the residual pressure removal valve line.
The method according to claim 1, wherein the inverter converts the electrical signal of the APU electrical signal line from OFF to ON in the PR mode for discharging the foreign material of the sep cooler to the outside, while turning the electrical signal of the motor electrical signal line to ON Air management system, characterized in that while maintaining the electrical signal of the residual pressure removal valve line to ON while switching the electrical signal of the emulsion removal valve line from ON to OFF.
The method according to claim 1, wherein the inverter is each electrical signal of the APU electrical signal line and the motor electrical signal line in a residual pressure removal mode that exhausts the remaining air in the discharge pipe of the air compressor when the engine is key off. Air management system, characterized in that the electrical signal of the residual pressure removal valve line is switched from ON to OFF while maintaining the OFF, and maintaining the electrical signal of the emulsion removal valve line to ON.
The method according to claim 1, wherein the air compressor, the sep cooler, the APU, and the air tank are connected by an air line circuit, the air line circuit is a sep cooler air line connecting the air compressor and the sep cooler, the sep cooler An air management system, characterized in that it is divided into an APU air line connecting the APU and an air tank air line connecting the APU and the air tank.
In the vehicle to which the air management system according to any one of claims 1, 2 and 4 to 11 is applied,
The air management system
An air compressor for generating compressed air, a Separator Cooler for accumulating foreign substances by purifying the compressed air, an Air Processing Unit (APU) for accumulating an emulsion by purifying the compressed air, and a state in which the compressed air is purified Air management device consisting of an air tank to be stored;
an inverter for operating the air compressor to generate the compressed air supplied to the inside of the APU for external discharge of the emulsion;
Vehicle characterized in that it is included.
The engine according to claim 12, wherein the inverter is linked to an inverter controller, and the inverter controller performs operation control of the air compressor, opening/closing control of the sep cooler exhaust port of the sep cooler, opening/closing control of the APU exhaust port of the APU, the engine A vehicle characterized in that it is linked with a controller that detects a key off of a CAN (Controller Area Network).
(A) A filling mode in which the compressed air of the air compressor constituting the air management device is filtered by the Separator Cooler and then the components of the emulsion are filtered in the APU (Air Processing Unit) and stored in the air tank, the filling Regeneration mode in which the compressed air of the air tank flows back to the APU following the mode to regenerate the APU, the emulsion removal mode in which the emulsion in the APU is discharged to the outside following the regeneration mode, the emulsion removal following the mode, the PR mode for discharging the foreign material of the sep cooler to the outside is performed by the controller after the engine is started;
(B) a step of performing a residual pressure removal mode for removing residual public enterprises in a discharge pipe of the air compressor by the controller when the engine is keyed off;
An emulsion removal method, characterized in that consisting of.
The method according to claim 14, wherein the emulsion removal mode generates compressed air by the re-operation of the air compressor, the generated compressed air is supplied to the inside of the APU, and the emulsion accumulated inside the APU is discharged to the outside An emulsion removal method, characterized in that.
The method according to claim 15, wherein the re-operation of the air compressor is performed for a predetermined time. The method according to claim 14, wherein in the residual pressure removal mode, the residual compressed air forming the residual air pressure is discharged to the atmosphere through the APU exhaust port of the APU.

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