High pressure co-rail electric control fuel injection system

A fuel injection system, high-pressure common rail technology, applied in the direction of fuel injection pump, fuel injection device, fuel injection control, etc., can solve problems such as waste of resources, achieve low risk, reduce the difficulty of technological evolution and resistance to marketization, reduce The effect of development costs

Inactive Publication Date: 2007-10-10
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-pressure common rail electronically controlled fuel injection system, in order to solve the problem of the existing electronically controlled fuel injection system in the process of design and development of the high-pressure common rail electronically controlled fuel injection system and the modification of the existing diesel engine to

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  • High pressure co-rail electric control fuel injection system
  • High pressure co-rail electric control fuel injection system
  • High pressure co-rail electric control fuel injection system

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[0025] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] Fig. 13 is a schematic diagram of the high-pressure common rail electronically controlled fuel injection system provided by the present invention. The high-pressure common rail electronically controlled fuel injection system is mainly composed of six parts: low-pressure oil circuit 6, electronically controlled high-pressure oil pump 131, high-pressure oil pipe 2, high-pressure fuel rail 3, electronically controlled fuel injector 4, and ECU (electronic control unit) 5. . Among them, the electronically controlled high-pressure oil pump 131 and the low-pressure oil circuit 6 make full use of the existing non-high-pressure common rail electronically controlled fuel injection system (the non-high-pressure common-rail electronically controlled fuel injection system refers to electronically controlled fuel injection systems other than the hi...

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Abstract

The present invention belongs to a high-pressure common rail electrically-controlled fuel-injection system, and relates to a diesel engine fuel-injection system. Said invention is characterized by that on the basis of existent high-pressure common rail electrically-controlled fuel-injection system its high-pressure common rail pump and low-pressure oil circuit adopt the electrically-controlled high-pressure oil pump and low-pressure oil circuit in the non-high-pressure common rail electrically-controlled fuel-injection system, and the existent electrically-controlled high-pressure oil pump and low-pressure oil circuit can be properly improved according to the requirements of working characteristics of the high-pressure common roil electrically-controlled fuel-injection system.

Description

technical field [0001] The invention belongs to auto parts, and relates to a fuel injection system for a diesel engine, in particular to a high-pressure common rail electronically controlled fuel injection system. Background technique [0002] Today's automotive industry has higher and higher requirements for emission and economy. In order to improve the economy and emission of diesel engines, the high pressure of fuel injection and the flexibility of control are the inevitable development directions of fuel supply systems. Among them, high-voltage common rail Controlled fuel injection system is an important development direction of today's fuel injection system. [0003] In the existing high-pressure common rail electronically controlled fuel injection system for diesel engines, there is the following typical configuration (as shown in Figure 1): mainly composed of low-pressure oil circuit 6, high-pressure common-rail pump 1, high-pressure oil pipe 2, high-pressure fuel rai...

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Application Information

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IPC IPC(8): F02D41/38F02D41/40F02M37/08F02M51/00F02M59/00F02M59/46F02M59/20F02M63/02
CPCY02T10/44Y02T10/40
Inventor 周明李立国李慧
Owner TSINGHUA UNIV
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