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Electronic control system and variable oil injecting pressure control method of internal combustion engine

An electronic control system, fuel injection pressure technology, applied in the direction of electrical control, engine control, fuel injection control, etc., can solve the problem that the real-time change and adjustment of fuel injection pressure cannot be realized, and achieve the effect of avoiding wet wall effect and reducing PN emission

Active Publication Date: 2019-05-21
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to solve the technical problem that a single fuel supply and injection mode cannot realize real-time adjustment of fuel injection pressure with working conditions

Method used

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  • Electronic control system and variable oil injecting pressure control method of internal combustion engine
  • Electronic control system and variable oil injecting pressure control method of internal combustion engine
  • Electronic control system and variable oil injecting pressure control method of internal combustion engine

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Embodiment 1

[0060] Please refer to figure 1 , which is a schematic structural diagram of the electronic control system in this embodiment. Such as figure 1 As shown, the electronic control system includes: a storage module 13, a parameter acquisition module 10, a phase judgment module 11 and a fuel injection pressure control module 12, and the storage module 13 is used to store the target fuel injection pressure list of each working stage of the internal combustion engine, The target fuel injection pressure list is a table about the corresponding relationship between working stage influencing parameters and target fuel injection pressure values, and the working stage includes a cold start stage, a warm-up stage and a warm-up stage; the parameter acquisition module 10 is used to obtain The working stage judgment parameter and the current working stage influencing parameter of the current internal combustion engine; the stage judgment module 11 is used to judge the current working stage of...

Embodiment 2

[0068] Please refer to figure 2 , which is a flow chart of the method for controlling the variable fuel injection pressure of the internal combustion engine in this embodiment. Such as figure 2 As shown, the variable fuel injection pressure control method of the internal combustion engine uses the electronic control system as described above. The internal combustion engine burns the fuel inside the machine and converts the heat energy released by it directly into a thermal internal combustion engine for power. The internal combustion engine The variable fuel injection pressure control method mainly includes the following steps:

[0069] Firstly, step S1 is executed: the parameter acquisition module acquires the working stage judgment parameters of the current internal combustion engine and the influencing parameters of the current working stage;

[0070] Next, step S2 is executed: the stage judging module judges the current working stage of the current internal combustion ...

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Abstract

The invention provides an electronic control system and a variable oil injecting pressure control method of an internal combustion engine. The method comprises the following steps: acquiring current working state determining parameters and current working stage influence parameters of the internal combustion through a parameter acquiring module; determining the current working state of the currentinternal combustion through a stage determining module based on the working stage determining parameters; transferring a target oil injecting pressure list in a storing module through an oil injecting pressure control module based on the current working stage; determining target oil injecting pressure value based on the current oil injecting pressure list and the current working state influence parameters; and adjusting the current oil injecting pressure into the target oil injecting pressure value. According to the method, the oil injecting pressure is adjusted based on the real-time workingcondition of the internal combustion, so that various gaseous materials can be optimally exhausted; and the exhausted materials meet related emission regulations.

Description

technical field [0001] The invention relates to the field of automobile engine control, in particular to an electronic control system and a method for controlling variable fuel injection pressure of an internal combustion engine. Background technique [0002] The system fuel injection pressure of traditional Port Fuel Injection gasoline engine PFI (PortFuel Injection) is limited by the pressure regulating valve and all working conditions are kept constant. The fuel pump will continue to deliver fuel to the fuel rail to maintain the basic injection pressure of the injector. This single fuel supply injection mode cannot realize real-time changes in fuel injection pressure with operating conditions. [0003] The National V emission regulations only limit gaseous pollutants for PFI engines, and the New European Driving Cycle (NEDC) is relatively stable. The traditional constant pressure injection mode will not affect the PFI engine to meet the requirements of the National V emis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/30F02D41/14F02D41/06
Inventor 赵翔张振宇曹银波
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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