Electronic control unit (ECU) of electromagnetic-type high-pressure common-rail injection system for vehicle diesel engine

An electronic control unit, high-pressure common rail technology, applied in fuel injection control, electrical control, engine control and other directions, can solve the problems of the late start of diesel electronic control technology research, restricting the rapid development of diesel engine technology, and low investment, etc. Interference ability, solving heating problems, reducing the effect of volume

Inactive Publication Date: 2010-03-31
BEIJING YAO JIA AUTOMOTIVE ELECTRONICS
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Problems solved by technology

Due to the late start of the research on diesel engine electronic control technology in my country, less investment a...

Method used

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  • Electronic control unit (ECU) of electromagnetic-type high-pressure common-rail injection system for vehicle diesel engine
  • Electronic control unit (ECU) of electromagnetic-type high-pressure common-rail injection system for vehicle diesel engine
  • Electronic control unit (ECU) of electromagnetic-type high-pressure common-rail injection system for vehicle diesel engine

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Embodiment Construction

[0012] The hardware structure of the electronic control unit is attached figure 1 shown. The system hardware consists of four parts: input module, microcontroller module, output module and communication module. The input module includes digital input and analog input, and is composed of signal processing circuits; the microcontroller module is composed of MPC5534 as the core single-chip microcomputer and peripheral circuits; the output module is the driving circuit of high-pressure common rail pressure control valve and fuel injector solenoid valve ; The communication module mainly includes FlexCAN and eSCI serial communication interface circuits.

[0013] The input module includes a pulse width conditioning circuit and an analog input conditioning circuit. The input part is mainly a signal processing circuit, which converts the output signal of the peripheral sensor circuit into a signal that the core processor can recognize. In the diesel engine high-pressure common rail ...

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Abstract

The invention relates to an electronic control unit (ECU) of an electric-control high-pressure common-rail injection system for a vehicle diesel engine, mainly applied to a high-pressure common-rail system of a diesel engine for accurately controlling the injection volume, the injection pressure, the injection timing, the injection rule, and the like; an ECU input module comprises digital quantityinput and analog quantity input which comprise signal-processing circuits; a microcontroller module adopts an MPC5534 of an ALE technology as a microcontroller; an output module is used as a drivingcircuit of a high-pressure common-rail pressure control valve and an electromagnetic valve of an oil injector, adopts a 250V high-pressure driving technology to realize rapid starting performance, adopts TPU multipath combination to control injection, applies a CPLD technology to realize the double closed-ring control of currents and voltages and adopts inductors to store and recycle energy so asto reduce the consumption of driving energy; and a communication module mainly comprises a CAN circuit and a serial communications interface (SCI) circuit. The size of an ECU circuit board is reducedby applying a modularized heat-dissipation technology and an EMC circuit design technology is applied.

Description

technical field [0001] The invention relates to the technical field of electronic control of electronically controlled diesel engines, and is mainly applied to electronically controlled diesel engines of high-pressure common rail injection technology. Background technique [0002] With the increasingly stringent emission regulations and the increasingly serious energy shortage problem, as well as the continuous improvement of people's quality of life, the requirements for the power, economy, emission, safety, comfort and other aspects of automobiles are getting higher and higher. Due to its good economy, power and reliability, diesel engine has become the main power of various vehicles, and the adoption rate of diesel engine is getting higher and higher. From a global perspective, automobile dieselization has become an irreversible trend. Diesel engine electronic control management technology is an important part that affects the overall performance of diesel engines. It is...

Claims

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Application Information

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IPC IPC(8): F02D41/26F02D41/40
Inventor 黄国钧张幽彤
Owner BEIJING YAO JIA AUTOMOTIVE ELECTRONICS
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