Control method and device for oil injection amount of engine

A control method and technology of a control device, which are applied in engine control, fuel injection control, machine/engine and other directions, can solve problems such as unreasonable control of engine fuel injection quantity, and achieve the effect of avoiding excessive fuel injection quantity and realizing reasonable control.

Inactive Publication Date: 2016-10-05
LAUNCH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a method and device for controlling the fuel injection quantity of an engine, the main purpose of which is to solve the technical problem of unreasonable control of the fuel injection quantity of the engine

Method used

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  • Control method and device for oil injection amount of engine
  • Control method and device for oil injection amount of engine
  • Control method and device for oil injection amount of engine

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Embodiment Construction

[0037] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] The invention provides a method for controlling the fuel injection quantity of an engine. refer to figure 1 Shown is the flow chart of the first embodiment of the method for controlling the fuel injection quantity of the engine according to the present invention.

[0039] In this embodiment, the method for controlling the fuel injection quantity of the engine includes:

[0040] Step S10, obtaining the theoretical fuel injection quantity of the engine of the vehicle based on the intake air quantity detected by the intake air sensor;

[0041] The vehicle is generally equipped with an ECU (Electronic Control Unit, electronic control unit), or a special microcomputer controller for the vehicle, which has calculation and control functions. When the engine is running, the ECU collects the signals of each sensor, pe...

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Abstract

The invention discloses a control method for an oil injection amount of an engine. The method comprises the following process steps of acquiring the theoretical oil injection amount of the engine of a vehicle based on the gas inlet amount detected by a gas inlet sensor; acquiring the actual gas inlet amount of the engine according to the work condition information of the engine, and acquiring the upper limit oil injection amount of the engine according to the actual gas inlet amount; controlling oil injection of the engine according to the upper limit oil injection amount if the theoretical oil injection amount is larger than or equal to the upper limit oil injection amount; and revising the theoretical oil injection amount according to the pressure of an intake manifold of the vehicle and the pressure of fuel if the theoretical oil injection amount is smaller than the upper limit oil injection amount, and controlling oil injection of the engine according to the revised theoretical oil injection amount. The invention also provides a control device for the oil injection amount of the engine. The control method and device solve the technical problem of unreasonable control in the oil injection amount of the engine.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a method and device for controlling the fuel injection quantity of an engine. Background technique [0002] Existing engines generally measure the intake air volume by setting intake sensors, and then control the fuel injection volume of the engine according to the measured intake air volume. However, for some engines, especially diesel engines, in order to To ensure the sensitivity of the intake sensor, the intake sensor is installed between the air filter and the supercharger. If the intake booster pipeline or the supercharger and other components fail, the actual intake air volume will decrease. , the intake air volume measured by the intake sensor is greater than the actual intake air volume, but at this time, the fuel injection volume of the engine is still controlled according to the intake air volume measured by the sensor, which will cause the fuel injection volume to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/30
CPCF02D41/30F02D2200/0406F02D2200/0602
Inventor 刘均刘新宋朝忠欧阳张鹏
Owner LAUNCH TECH CO LTD
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