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Control method for balancing influence of compressor on engine torque of vehicle

A technology of engine torque and control method, applied in engine control, machine/engine, fuel injection control and other directions, can solve problems such as vehicle swaying, avoid superposition and sudden change, and solve the effect of vehicle swaying

Active Publication Date: 2018-05-29
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a control method for balancing the influence of the compressor on the engine torque of the vehicle, so as to solve the problem caused by the superposition of the engine torque when the engine resumes oil supply due to the compressor being engaged during the fuel-cut coasting process. vehicle movement problem

Method used

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  • Control method for balancing influence of compressor on engine torque of vehicle
  • Control method for balancing influence of compressor on engine torque of vehicle
  • Control method for balancing influence of compressor on engine torque of vehicle

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Embodiment Construction

[0025] In order to save fuel while the vehicle is running, when the engine speed reaches a certain value, the vehicle can enter the fuel-cut coasting stage. Among them, the critical point of entering the fuel cut-off coasting stage is the fuel cut-off speed, and the engine speed is higher than the fuel cut-off speed, and the engine enters the driving condition and stops the fuel injection. In order to prevent the engine from stalling, the critical point for the engine to resume fuel supply is to resume the fuel supply speed, so that the engine can resume fuel injection before the speed drops to the idle speed, so that the engine can continue to actively run.

[0026] Such as figure 2 As shown, the control method of the present invention for balancing the influence of the compressor on the vehicle engine torque first needs to set the engine speed when the engine resumes fuel supply and the engine speed when the engine oil is cut off. Specifically, the setting steps are as fol...

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Abstract

The invention provides a control method for balancing an influence of a compressor on engine torque of a vehicle. An engine is located in a fuel cut gliding state, the compressor is in a shut-down state, and the control method comprises the steps that a starting-up request used for indicating the compressor to be started up is received; and an electromagnetic clutch is actuated after a preset duration so as to start up the compressor, wherein the preset duration refers to the time consumed by the compressor to restore from the minimum torque to the preset torque. The control method is used forsolving the problem of vehicle movement caused by superposition of the engine torque when the vehicle glides in a fuel cut state and the compressor actuates to make the engine restore fuel supply. Particularly after design of a vehicle suspension structure and rigidity matching are completed, when the vehicle is still in an abnormal state, the control method is the best way of solution.

Description

technical field [0001] The invention relates to the field of vehicle engine control, in particular to a control method for balancing the influence of a compressor on vehicle engine torque. Background technique [0002] The operation of the air conditioner compressor is driven by the engine, and the air conditioner compressor and the engine crankshaft are driven by electromagnetic clutches and pulleys. When the driver presses the A / C button, the compressor connects to the electromagnetic clutch, and the engine drives the compressor to work. Therefore, part of the engine torque is consumed when the air conditioner is turned on. [0003] In order to save fuel while the vehicle is running, when the engine speed reaches a certain value, the vehicle can enter the oil-cut coasting stage. The fuel-cut taxiing stage can be divided into neutral taxiing or supporting gear taxiing. Coasting in neutral is to collect fuel while driving and push the gear to the neutral position to coast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02F02D1/04F02B63/06
CPCF02B63/06F02D1/04F02D29/02
Inventor 翁波张楠孙剑
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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