CN204851451U - Automatically controlled fuel injection system's of joint -track type diesel engine controlling means - Google Patents
Automatically controlled fuel injection system's of joint -track type diesel engine controlling means Download PDFInfo
- Publication number
- CN204851451U CN204851451U CN201520528822.7U CN201520528822U CN204851451U CN 204851451 U CN204851451 U CN 204851451U CN 201520528822 U CN201520528822 U CN 201520528822U CN 204851451 U CN204851451 U CN 204851451U
- Authority
- CN
- China
- Prior art keywords
- sensor
- diesel engine
- fuel
- controlling means
- fuel injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 45
- 238000002347 injection Methods 0.000 title abstract description 49
- 239000007924 injection Substances 0.000 title abstract description 49
- 239000007858 starting material Substances 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 25
- 239000000295 fuel oil Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 239000002826 coolant Substances 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
This automatically controlled fuel injection system's of joint -track type diesel engine controlling means, including ECU, ECU links to each other with diesel engine commentaries on classics strip sensor, accelerator pedal position sensor, fuel delivery adjusting sleeve position sensor, timer position sensor, intake pressure sensor, intake temperature sensor, coolant temperature sensor, speed sensor, neutral switch, air conditioner signal, starter signal, alternator indicator, fuel sprayer controller, the door controller that admits air, glow plug, security function controller, autodiagnosis display respectively. The utility model provides a multi -functional automatically controlled fuel injection system's of joint -track type diesel engine controlling means is provided, the thermal efficiency reaches about 45%, provides a comparatively ripe scheme for above -mentioned controlling means.
Description
Technical field
The utility model relates to diesel engine technologies field.
Background technique
From the eighties in 20th century, on the basis of petrol engine electric control fuel oil jet system, various electronic control diesel injection system is come out one after another.In the evolution of more than 20 years, electronic diesel injection system successively defines 2 kinds of fundamental types, i.e. position control type and time controling type.To the nineties in 20th century, common rail (fuel dispensing tube) formula time controling type electronic diesel injection system is developed rapidly, but also wants a lot of jejune place.
Model utility content
The utility model is the control gear in order to provide a kind of new common rail diesel engine electric control fuel oil jet system.
The control gear of common rail diesel engine electric control fuel oil jet system, it is characterized in that: comprise ECU, described ECU turns belt sensor respectively with diesel engine, accelerator pedal position sensor, fuel delivery regulating sleeve position transducer, timer location sensor, air inlet pressure sensor, intake air temperature sensor, cooling-water temperature transmitter, vehicle speed sensor, neutral switch, air conditioner signals, starter motor signal, alternator indicator, oil nozzle controller, intake valve controller, glow plug, Safety function controller, On-Board Diagnostics display device are connected.
The control gear providing a kind of multi-functional common rail diesel engine electric control fuel oil jet system provided by the utility model, the thermal efficiency reaches about 45%, for above-mentioned control gear provides a kind of comparatively ripe scheme.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
As shown in Figure 1, common rail for diesel engine formula electric control fuel oil jet system and petrol engine electric control fuel oil jet system are generally all made up of 3 parts such as sensor, ECU (Electrical Control Unit) (ECU) and final controlling element.Various sensor provides the operating mode of motor and the information of service condition for ECU, ECU is judged and calculates, and to final controlling element---oil sprayer and oil feed pump (common rail for diesel engine formula electric control fuel oil jet system) send instruction electrical signal, regulate fuel injection quantity and injection timing etc., to reach the object regulating engine operating state.
Fuel injection quantity controls
ECU according to the signal determination basic fuel injection amount of the sensor such as accelerator pedal position and diesel engine speed, then revises by the information of the sensor such as suction press and fuel oil temperature and switch starter input, finally calculates best fuel injection quantity, and is energized to oil sprayer.ECU controls fuel injection quantity by the electronic pulse width (current"on"time) controlling to lead to oil sprayer.
Oil injection time controls
ECU is according to accelerator pedal position and diesel engine speed determination basic fuel injection moment, revise by the signal of the sensor such as suction press and coolant temperature and switch starter input again, finally determine best oil injection time, ECU was energized to oil sprayer by this moment, and namely ECU determines beginning of injection to the moment that oil sprayer is energized.
Injection pressure controls
Injection pressure equals the fuel pressure in fuel dispensing tube.Fuel dispensing tube arranges fuel pressure transmitter, Flow restrictor and pressure-limit valve.
Injection Pump in system is different from the Injection Pump in Mechanical course diesel injection system, and its function only has one, namely to fuel pressurization, is generally called oil feed pump (high pressure oil transfer pump), is fed in fuel dispensing tube by the fuel oil after oil feed pump supercharging.Injection pressure does not depend on engine speed and fuel injection quantity, there is not dependence between the foundation of injection pressure and combustion oil injection.No matter under what operating mode, higher injection pressure can be ensured.
The independence that fuel distribution tubular type electronic diesel injection system easily realizes injection pressure controls.ECU (Electrical Control Unit), according to the requirement of diesel engine condition, regulates the oil pressure in fuel dispensing tube, and according to the signal of fuel pressure transmitter, carries out feedback control, make the oil pressure in fuel dispensing tube be stable at desired value to oil pressure.
When oil pressure is lower than desired value, ECU is to the energising of fuel delivery control valve, and control valve is closed, and the fuel amount fed in fuel dispensing tube increases, and oil pressure increases; When oil pressure is higher than desired value, ECU is to the power-off of fuel delivery control valve, and control valve is opened, and part fuel oil flows back to the low pressure oil pocket of oil feed pump through control valve, and the fuel amount fed in fuel dispensing tube reduces, and oil pressure reduces.
Fuel injection characteristic controls
Fuel injection characteristic refers to that injection rate in time or the variation relation of crank angle, and injection rate is then the fuel injection quantity of unit time.Because the performance of fuel injection characteristic to diesel engine has material impact, therefore, different fuel injection characteristics should be selected for having different mixed Daqu from the diesel engine of combustion manner.In fuel distribution tubular type electronic diesel injection system, when injection pressure remains unchanged, fuel injection quantity is only is decided by the electrical pulse width of ECU to oil sprayer.Therefore, as long as change command pulse just fuel injection characteristic can be changed, namely main injection and pre-spray can be realized.Main injection is the course of injection that fuel injection quantity is larger, and pre-spray is before main injection and the little course of injection of fuel injection quantity.
The control ECU of fuel injection quantity, according to the input signal of the sensor such as accelerator pedal position and diesel engine speed, as the control basis of fuel injection quantity, then according to the signal of other sensor, revises basic fuel injection amount.Accelerator pedal position sensor just passes to ECU the will of driver, and driver does not manipulate fuel delivery directly.Because of the average excess air coefficient α >1 of diesel engine, so by air quantity as the basic inaccuracy of control.Meanwhile, amount of oxygen residual in diesel exhaust gas is more, and the control of lambda sensor is insensitive (the sensitiveest near excess air coefficient α=1), so common rail for diesel engine formula electric control fuel oil jet system does not fill lambda sensor.
Claims (1)
1. the control gear of common rail diesel engine electric control fuel oil jet system, it is characterized in that: comprise ECU, described ECU turns belt sensor respectively with diesel engine, accelerator pedal position sensor, fuel delivery regulating sleeve position transducer, timer location sensor, air inlet pressure sensor, intake air temperature sensor, cooling-water temperature transmitter, vehicle speed sensor, neutral switch, air conditioner signals, starter motor signal, alternator indicator, oil sprayer, oil feed pump, intake valve controller, glow plug, Safety function controller, On-Board Diagnostics display device are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520528822.7U CN204851451U (en) | 2015-07-20 | 2015-07-20 | Automatically controlled fuel injection system's of joint -track type diesel engine controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520528822.7U CN204851451U (en) | 2015-07-20 | 2015-07-20 | Automatically controlled fuel injection system's of joint -track type diesel engine controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851451U true CN204851451U (en) | 2015-12-09 |
Family
ID=54742006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520528822.7U Expired - Fee Related CN204851451U (en) | 2015-07-20 | 2015-07-20 | Automatically controlled fuel injection system's of joint -track type diesel engine controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211738A (en) * | 2020-10-17 | 2021-01-12 | 扬州中舟动力有限公司 | Control device of common-rail type electronic control fuel injection system of marine diesel engine |
| CN116480480A (en) * | 2023-06-21 | 2023-07-25 | 厦门科皕检测科技股份有限公司 | Intelligent control system based on automobile engine fuel sprayer |
-
2015
- 2015-07-20 CN CN201520528822.7U patent/CN204851451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211738A (en) * | 2020-10-17 | 2021-01-12 | 扬州中舟动力有限公司 | Control device of common-rail type electronic control fuel injection system of marine diesel engine |
| CN116480480A (en) * | 2023-06-21 | 2023-07-25 | 厦门科皕检测科技股份有限公司 | Intelligent control system based on automobile engine fuel sprayer |
| CN116480480B (en) * | 2023-06-21 | 2023-08-18 | 厦门科皕检测科技股份有限公司 | Intelligent control system based on automobile engine fuel sprayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160720 |