CN221144637U - Two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system - Google Patents
Two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system Download PDFInfo
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- CN221144637U CN221144637U CN202322815535.1U CN202322815535U CN221144637U CN 221144637 U CN221144637 U CN 221144637U CN 202322815535 U CN202322815535 U CN 202322815535U CN 221144637 U CN221144637 U CN 221144637U
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- 239000003921 oil Substances 0.000 title claims abstract description 140
- 238000002347 injection Methods 0.000 title claims abstract description 70
- 239000007924 injection Substances 0.000 title claims abstract description 70
- 239000000295 fuel oil Substances 0.000 title claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 87
- 230000001105 regulatory effect Effects 0.000 claims abstract description 56
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000011161 development Methods 0.000 abstract description 2
- 238000000889 atomisation Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model aims to provide a two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system which is characterized by comprising a connecting oil circuit component, an oil pressure regulating device, a pressure regulating oil circuit component and two sets of gas-clamping direct-injection devices; the air-clamping direct injection device is arranged above the engine cylinder cover, the air injector stretches into the combustion chamber of the cylinder cover, two sets of air-clamping direct injection devices are communicated with each other through a connecting oil way assembly, one set of air-clamping direct injection device is communicated with the oil pressure adjusting device through the pressure adjusting oil way assembly, and fuel is drained to the oil pressure adjusting device, so that the stability of the fuel pressure of the whole set of air-clamping direct injection fuel supply system is ensured. The utility model not only effectively reduces the number of parts of the system and increases the reliability of the system, but also greatly simplifies the structure and the quality of the system and reduces the development and use cost of the system.
Description
Technical Field
The utility model relates to a gas-clamping direct-injection oil supply system of a two-stroke four-cylinder heavy oil engine, belonging to the technical field of internal combustion engines.
Background
Two ejectors are arranged in the air-clamping direct-injection system: fuel injectors and air injectors. The fuel injector is typically disposed above the air injector and is operative to inject a metered amount of fuel into a mixing chamber at the top of the air injector and to premix the compressed air therein to effect a primary atomization of the fuel. And then the air injector works to spray the oil-gas mixture in the mixing cavity into the cylinder, so as to finish secondary atomization of the fuel. The fuel injection mode can effectively solve the problem of atomization of the heavy oil fuel, so that the heavy oil is atomized into extremely fine liquid drops, and the ignition requirement of an engine is met.
With the rapid development of unmanned concepts in the military field, the demand for the two-stroke gas-clamping direct-injection heavy oil engine is higher and higher, the prior single-cylinder low power can not meet the military demand, and the multi-cylinder high-power two-stroke gas-clamping direct-injection engine is derived. The prior air-clamping direct-injection system mainly aims at a single-cylinder type, namely, one set of complete air-clamping direct-injection system is arranged for one cylinder: comprises two ejectors, two housings and an oil pressure regulating valve. If the single-cylinder type air-clamping direct injection system is directly used, the multi-cylinder engine air-clamping direct injection system has the advantages of more parts and complicated circuits, and meanwhile, the oil leakage risk of the engine is increased, and the use preparation time of the engine is prolonged.
In this regard, it is necessary to design and develop a direct injection system suitable for multi-cylinder engines.
Disclosure of Invention
In order to solve the problems, the utility model aims to provide a two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system which is characterized by comprising a connecting oil circuit component, an oil pressure adjusting device, a pressure adjusting oil circuit component and two groups of gas-clamping direct-injection devices; the air-clamping direct injection device comprises an air injector, a fuel injector, an air guide rail and a fuel guide rail; the oil pressure regulating device comprises a pressure regulating valve, a pressure regulating valve shell and a check ring; the device is characterized in that the device is arranged above the engine cylinder cover, the air injector extends into the combustion chamber of the cylinder cover, the two sets of the device are communicated with each other through the connecting oil path component, the pressure regulating oil path component is used for communicating one set of the device with the oil pressure regulating device and draining fuel to the oil pressure regulating device, so that the stability of the fuel pressure of the whole set of the device is ensured.
Preferably, each set of the air-clamping direct injection device is provided with two air injectors, two fuel injectors and two air guide rails, so that the oil supply requirements of two cylinders on the same side are met.
Preferably, each set of the air-clamping direct injection device is provided with a fuel guide rail, the fuel guide rails are long-strip-shaped, two ends of each fuel guide rail are provided with fuel injector mounting holes II, the distance between the two mounting holes is determined according to the cylinder center distance on the same side of the engine, an oil duct is arranged in each set of the air-clamping direct injection device to penetrate through the whole fuel guide rail and is communicated with the fuel injector mounting holes II through an oil port, and two ends of the oil duct are provided with internal threads, so that an oil pipe joint is convenient to install.
Preferably, the air guide rail is provided with an air injector mounting hole and a fuel injector mounting hole I, the top of the air injector mounting hole is also provided with a cylindrical boss and an oil guiding duct, the axis of the oil guiding duct is overlapped with the axis of the air injector mounting hole so as to guide fuel to be directly injected into the air injector premixing cavity, and a compressed air interface is also arranged at the same time so as to provide compressed air for the air clamping direct injection device.
Preferably, the pressure regulating valve shell is characterized in that the pressure regulating valve shell is in a cylindrical ladder shape, and an oil inlet and an oil outlet are arranged on the pressure regulating valve shell.
Preferably, the two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system is only provided with one set of oil pressure adjusting device and is arranged at the tail end of an oil path of the gas-clamping direct-injection oil supply system.
Advantageous effects
The utility model relates to a two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system, which fully combines the advantages of the existing gas-clamping direct-injection system and improves the defects. The opposed four-cylinder engine adopting the air-clamping direct-injection oil supply system effectively reduces the number of parts of the system, simplifies the pipeline arrangement and the production and assembly of the engine, is beneficial to the stability and consistency of the oil pressure of the whole oil way of the engine, reduces the whole quality of the air-clamping direct-injection oil supply system and the like, and ensures that the whole engine is simpler and lighter.
Drawings
FIG. 1 is a state diagram of the present utility model;
FIG. 2 is a top view of an air rail of the present utility model;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a front view of a fuel rail of the present utility model;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a front view of the oil pressure regulator of the present utility model;
FIG. 7 is a cross-sectional view taken at A-A of FIG. 6;
In the figure:
1-a gas-clamping direct injection device; 2-connecting an oil circuit component; 3-a pressure regulating oil circuit assembly; 4-an oil pressure adjusting device; 10-an air guide rail; 11-an air ejector; 12-a fuel injector; 13-a fuel rail; 14-fastening bolts; 101-air injector mounting holes; 102-first fuel injector mounting hole; 103-an oil guide passage; 104-a boss; 105-compressed air interface; 106 bolt holes; 130-fuel rail mounting holes; 131-fuel injector mounting hole two; 132-oil passage; 133-an oil port; 20-an oil pipe A; 21-a fixing clip; 22-tubing connector a; a 23-adapter; 30-an oil pipe B; 31-an oil pipe joint B; 40-a pressure regulating valve; 41-check ring; 42-a pressure regulating valve housing; 421-oil outlet; 422-oil inlet; 423-pressure regulating valve shell mounting hole
Detailed Description
Specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 7, the utility model provides a two-stroke four-cylinder heavy oil engine gas-clamping direct injection oil supply system which mainly comprises a connecting oil circuit component (2), an oil pressure regulating device (4), a pressure regulating oil circuit component (3) and two groups of gas-clamping direct injection devices (1); the air-clamping direct injection device (1) comprises an air injector (11), a fuel injector (12), an air guide rail (10) and a fuel guide rail (13), and is mainly responsible for metering and atomizing fuel required by an engine; the oil pressure regulating device (4) is composed of a pressure regulating valve (40), a pressure regulating valve shell (42) and a retainer ring (41) and is responsible for regulating the oil pressure in an oil way of an oil supply system of the engine, so that the oil pressure of the engine is always in a correct range in operation; the connecting oil way component (2) mainly comprises an oil pipe A (20), an oil pipe joint A (22) and an adapter (23), and two ends of the connecting oil way component (2) are respectively connected with the fuel guide rails (13) on the 2 sets of gas-clamping direct injection devices (1) to realize the serial communication of the oil ways of the two sets of gas-clamping direct injection devices (1); the pressure regulating oil way assembly (3) mainly comprises an oil pipe B (30), an oil pipe joint A (22), an oil pipe joint B (31) and an adapter (23), one end of the pressure regulating oil way assembly (3) is communicated with a fuel rail (13) on one set of the air-clamping direct injection device (1), the other end of the pressure regulating oil way assembly is communicated with an oil inlet (422) of a pressure regulating valve shell (42) on the oil pressure regulating device (4), and the series connection communication of the oil pressure regulating device (4) and an oil way of the air-clamping direct injection device (1) is realized.
As shown in fig. 1, each set of the air-clamping direct injection device (1) is provided with two air injectors (11), two fuel injectors (12) and two air guide rails (10), so that the oil supply requirements of two cylinders on the same side are met.
As shown in fig. 1, fig. 4 and fig. 5, each set of air-clamping direct injection device (1) is provided with a fuel guide rail (13), the fuel guide rails (13) are long-strip-shaped, two ends of each fuel guide rail are provided with a fuel injector mounting hole II (131), the distance between the two mounting holes is determined according to the cylinder center distance on the same side of the engine, an oil duct (132) is arranged in each fuel guide rail to penetrate through the whole fuel guide rail (13), the oil duct (132) is communicated with the fuel injector mounting holes II (131) through an oil port (133), and two ends of the oil duct (132) are provided with internal threads, so that the connection and the installation of an oil duct component are facilitated.
As shown in fig. 2 and 3, the air guide rail (10) is provided with an air injector mounting hole (101) and a fuel injector mounting hole I (102), the top of the air injector mounting hole (101) is also provided with a cylindrical boss (104) and an oil guiding channel (103), the axis of the oil guiding channel (103) coincides with the axis of the air injector mounting hole (101) so as to guide fuel to be directly injected into the air injector premixing cavity, and meanwhile, a compressed air interface (105) is also arranged to provide compressed air for the air clamping direct injection device (1).
As shown in fig. 6 and 7, the whole set of oil supply system is provided with a set of oil pressure regulating device (4) and is arranged at the tail end of an oil way, and the pressure regulating valve shell (42) is in a cylindrical stepped structure and is provided with an oil inlet (422) and an oil outlet (421).
The assembly process comprises the following steps:
Split charging air guide rail assembly: based on the air guide rail (10), the air injector (11) and the fuel injector (12) are respectively installed in corresponding installation holes of the air guide rail (10), and 4 sets of fuel injectors are assembled for standby.
The split-type gas direct injection device (1) comprises: based on the fuel rail (13), the fuel injector (12) in the assembled air rail assembly is installed in a fuel injector installation hole II (131) of the fuel rail (13), and the fuel rail (13) and the air rail (10) are fastened by fastening bolts (14), so that split charging of the two sets of air-clamping direct injection devices (1) is completed.
Split charging oil pressure adjusting device (4): the pressure regulating valve (40) is mounted in a mounting hole of the pressure regulating valve housing (42) on the basis of the pressure regulating valve housing (42), and then the snap spring (41) is mounted in a corresponding mounting hole of the pressure regulating valve housing (42), so that sub-packaging of the oil pressure regulating device (4) is completed.
Final assembly of the air-clamping direct-injection oil supply system: the two sets of split-charging direct injection devices (1) are arranged in a line along the axis direction of the fuel rail (13), the two sets of direct injection devices (1) are consistent in orientation, the fuel rail (13) of the two sets of direct injection devices (1) are sequentially connected by the connecting oil circuit component (2), the series connection of the two sets of direct injection devices (1) is completed, then the pressure regulating oil circuit component (3) is installed on the fuel rail (13) of one set of direct injection device (1), and the other end of the pressure regulating oil circuit component (3) is connected to the pressure regulating valve shell oil inlet (422) on the oil pressure regulating device (4), so that the assembly of the whole set of direct injection oil supply system is completed.
Assembly with an engine: four air injectors (11) of the whole set of air-clamping direct-injection oil supply system are installed in installation holes on an engine cylinder cover, 8 fastening bolts sequentially penetrate through air guide rail bolt holes (106) to fasten the whole set of air-clamping direct-injection oil supply system, an oil pressure adjusting device (4) is fixed through 2 fastening bolts, a connecting oil way assembly (2) is fixed through a fixing clamp (21), an engine oil inlet pipe is connected to one end of a fuel guide rail (13) on the air-clamping direct-injection device (1), an engine oil return pipe is connected to an oil return opening (421) of a pressure regulating valve shell on the oil pressure adjusting device (4), and installation of the air-clamping direct-injection oil supply system and the engine is completed.
Working principle:
As shown in fig. 1, during normal operation of the engine, after the fuel is pressurized by the fuel pump, the fuel enters from one end of the fuel guide rail (13) through the fuel inlet pipe, fills the whole set of the fuel-clamping direct-injection fuel supply system oil way and reaches the oil pressure regulating device (4), and after the pressure is regulated by the pressure regulating valve (40), the fuel flows back to the fuel tank from the oil return port (421) of the pressure regulating valve shell of the oil pressure regulating device (4) to finish the stabilization of the oil pressure of the engine oil way. In addition, the fuel enters a second fuel injector mounting hole (131) through an oil port (133) on the fuel guide rail (13), namely, the oil inlet of the fuel injector (12), working fuel is provided for the fuel injector (12), after an engine electronic control unit sends out a fuel injection signal, the fuel injector (12) opens a fuel injection mode, the fuel is injected through the fuel injector (12) and is guided to the upper part of the air injector (11) through a guide oil duct (103) on the air guide rail (10) and is primarily mixed and atomized with air entering through a compressed air interface (105), and finally the fuel is injected into an engine combustion chamber through the air injector (11) for combustion.
The particular exemplary embodiments of the utility model described above are for purposes of illustration and example, but the utility model is not limited to these embodiments, any modifications or substitutions that fall within the basic spirit of the embodiments, and still fall within the scope of the utility model as claimed.
Claims (6)
1. The two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system is characterized by comprising a connecting oil circuit component (2), an oil pressure regulating device (4), a pressure regulating oil circuit component (3) and two sets of gas-clamping direct-injection devices (1); the air-clamping direct injection device (1) comprises an air injector (11), a fuel injector (12), an air guide rail (10) and a fuel guide rail (13); the oil pressure regulating device (4) comprises a pressure regulating valve (40), a pressure regulating valve shell (42) and a retainer ring (41); the device is characterized in that the device (1) is arranged above an engine cylinder cover, the air injector (11) stretches into a cylinder cover combustion chamber, two sets of the device (1) are communicated with each other through the connecting oil path component (2), one set of the device (1) is communicated with the oil pressure regulating device (4) through the pressure regulating oil path component (3), and fuel is guided to the oil pressure regulating device (4), so that the stability of the fuel pressure of the whole set of the device is ensured.
2. The two-stroke four-cylinder heavy oil engine air-clamping direct-injection oil supply system according to claim 1 is characterized in that each set of air-clamping direct-injection device (1) is provided with two air injectors (11), two fuel injectors (12) and two air guide rails (10) to meet the oil supply requirements of two cylinders on the same side.
3. The two-stroke four-cylinder heavy oil engine air clamping and direct injection oil supply system according to claim 1 is characterized in that each set of air clamping and direct injection device (1) is provided with a fuel guide rail (13), the fuel guide rails (13) are in a strip shape, two ends of each fuel guide rail are provided with fuel injector mounting holes II (131), the distance between the two mounting holes is determined according to the cylinder center distance on the same side of the engine, an oil duct (132) is arranged in each oil duct to penetrate through the whole fuel guide rail (13) and is communicated with the fuel injector mounting holes II (131) through an oil port (133), and two ends of each oil duct (132) are provided with internal threads, so that the installation of an oil pipe joint is facilitated.
4. The two-stroke four-cylinder heavy oil engine air clamping direct injection oil supply system according to claim 1 is characterized in that an air injector mounting hole (101) and a fuel injector mounting hole I (102) are arranged on an air guide rail (10), a cylindrical boss (104) is further arranged at the top of the air injector mounting hole (101) and an oil guiding duct (103) is arranged at the top of the air injector mounting hole, the axis of the oil guiding duct (103) coincides with the axis of the air injector mounting hole (101) so as to guide fuel to be directly injected into an air injector premixing cavity, and a compressed air interface (105) is also arranged to provide compressed air for the air clamping direct injection device (1).
5. The two-stroke four-cylinder heavy oil engine air-clamping direct injection oil supply system according to claim 1, wherein the pressure regulating valve shell (42) is in a cylindrical stepped shape, and an oil inlet (422) and an oil outlet (421) are arranged on the pressure regulating valve shell.
6. The two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system according to claim 1 is characterized in that the whole set of oil supply system is only provided with one set of oil pressure regulating device (4) and is arranged at the tail end of an oil way of the gas-clamping direct-injection oil supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322815535.1U CN221144637U (en) | 2023-10-20 | 2023-10-20 | Two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322815535.1U CN221144637U (en) | 2023-10-20 | 2023-10-20 | Two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221144637U true CN221144637U (en) | 2024-06-14 |
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ID=91427322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322815535.1U Active CN221144637U (en) | 2023-10-20 | 2023-10-20 | Two-stroke four-cylinder heavy oil engine gas-clamping direct-injection oil supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221144637U (en) |
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2023
- 2023-10-20 CN CN202322815535.1U patent/CN221144637U/en active Active
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