Electronic unit pump of diesel engine
A diesel engine and unit pump technology, which is applied in mechanical equipment, engine components, fuel injection pumps, etc., can solve the problem that the mechanical synthetic pump cannot meet the emission standards of Euro III and above, and it is not easy to achieve the emission standards of Euro IV and above. Problems such as high-pressure injection cannot be realized, and the optimal fuel injection quantity and fuel injection time can be achieved, preventing secondary injection, and reducing frictional resistance.
Inactive Publication Date: 2016-05-11
ZHONGMAN POWER JIANGSU CO LTD
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The injection device of the mechanical pump has low control precision, poor flexibility, and narrow control range. It can only control a few working conditions and cannot perform precise control in all working conditions. The pipeline is long and there is pressure loss. The pressure of the fuel injection pump is usually lower than 1500bar, and pressure fluctuations such as residual pressure and reflection waves will cause abnormal injection; there are various straight grooves and inclined grooves on the plunger, which increase leakage and reduce strength and Rigidity, the pressure at the pump end is difficult to increase above 1300bar, and high-pressure injection cannot be realized
Due to these deficiencies, mechanical synthetic pumps cannot meet Euro III and above emission standards
Electronically controlled unit pumps and pump nozzles also limit the structure of the engine, and it is not easy to achieve emission standards above Euro IV
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.
[0022] Diesel engine electronically controlled single pump, including: roller 1, pump body oil chamber 2, plunger assembly that drives the oil in pump body oil chamber 2 to move, the main pressure oil passage connecting pump body oil chamber 2 to high-pressure oil pipe, connected to the main The auxiliary pressure oil passage of the pressure oil passage, the solenoid control valve connected between the main pressure oil passage and the auxiliary pressure oil passage and controls the fuel pressure, and the fuel injector connected to the high pressure oil pipe. The electromagnetic control valve includes: a valve seat 8 with a fuel pressure chamber, a valve core 9 set in the valve seat 8, an auxiliary brake assembly set on the valve core 9, and an armature 10 that drives the valve core 9 to move, corresponding to the armature The electromagn...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an electronic unit pump of a diesel engine. The electronic unit pump comprises a roller, a pump oil cavity, a plunger assembly, a main pressure oil way, an auxiliary pressure oil way, an electromagnetic control valve and an oil sprayer. The plunger assembly drives oil in the pump oil cavity to move, the pump oil cavity is communicated to a high-pressure oil pipe through the main pressure oil way, the auxiliary pressure oil way is connected to the main pressure oil way, the electromagnetic control valve is connected between the main pressure oil way and the auxiliary pressure oil way and controls fuel oil pressure, and the oil sprayer is connected to the high-pressure oil pipe. According to the electronically-controlled electronic unit pump of the diesel engine, high-pressure spraying can be achieved, harmful emissions of the engine can be reduced, economy, power performance and intelligence of the engine are improved, and the standard of euro III or the standard above the euro III can be met.
Description
technical field [0001] A unit pump, especially an electronically controlled unit pump. Background technique [0002] The existing diesel engine fuel injection synthesis pump device is a mechanical synthesis pump or an electronically controlled unit pump with an electronically controlled pump nozzle. The mechanical synthetic pump is composed of fuel injection pressure regulating mechanism, fuel injection quantity regulating mechanism, fuel injection time regulating mechanism and injection mechanism. The fuel injectors of each cylinder of the electronically controlled unit pump are supplied by independent unit pumps, and the structure is simplified, with high-pressure pipelines; the nozzle of the electronically controlled pump omits the high-pressure fuel pipe, but the cylinder head structure is completely different and must be used Integral cylinder head, overhead camshaft structure, the engine has changed a lot. The injection device of the mechanical pump has low control p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F02M59/36F02M59/46
Inventor 陈伯林
Owner ZHONGMAN POWER JIANGSU CO LTD