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Cylinder deactivation control method and system of engine and vehicle

A control method and engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as affecting the driving of the vehicle, unable to meet the needs of use, and the cylinder deactivation control is too mechanical.

Active Publication Date: 2021-04-27
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose an engine cylinder deactivation control method, system and vehicle to solve the problem that the existing engine cylinder deactivation control is too mechanical, and it is easy to affect the driving of the vehicle after cylinder deactivation, unable to meet the use requirements, and the engine cannot The problem of being in the best fuel consumption zone under all working conditions

Method used

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  • Cylinder deactivation control method and system of engine and vehicle
  • Cylinder deactivation control method and system of engine and vehicle
  • Cylinder deactivation control method and system of engine and vehicle

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Embodiment Construction

[0100] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application can be understood more thoroughly, and will fully convey the scope of this application to those skilled in the art.

[0101] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0102] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0103] refer to figure 1 , shows a flow chart of steps of a method for controlling deactivation of cylinders of an engine described in this embodiment. I...

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Abstract

The invention provides a cylinder deactivation control method and system of an engine and a vehicle. The method comprises the following steps: if the required torque of the engine changes, acquiring target vehicle state information of the vehicle; determining whether the target vehicle state information meets a preset condition or not; if the target vehicle state information meets the preset condition, controlling the engine to work in a full-cylinder working state; and if the target vehicle state information does not meet the preset condition, controlling the engine to work at the current cylinder deactivation rate or to work by changing the cylinder deactivation rate according to torque response time of the engine and mechanism response time of a cylinder deactivation mechanism in the torque switching process. According to the technical scheme, whether the vehicle is allowed to enter the cylinder deactivation working state or not at present can be judged according to the target vehicle state information, and then the problems that after cylinder deactivation, vehicle driving is affected and use requirements cannot be met can be avoided.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine cylinder deactivation control method, system and vehicle. Background technique [0002] At present, environmental problems and energy crisis are becoming more and more serious, and internal combustion engine is not only a large energy consumer, but also a large polluting waste gas producer, so it is urgent to solve the problem of energy saving and emission reduction of internal combustion engine. [0003] Based on the purpose of reducing fuel consumption, there is currently an engine cylinder deactivation technology. By closing some cylinders of the engine during low-load operation, the pumping loss and friction are reduced, so that the engine is in a more economical fuel consumption range when the engine is running under low load. . For example, the existing EA211 four-cylinder engine can control two cylinders to stop at low load, and the existing 3.0 engine can c...

Claims

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Application Information

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IPC IPC(8): F02D13/06F02D17/02
CPCF02D13/06F02D17/02
Inventor 崔亚彬袁中营杨建东荀贺贺张冬冬段景辉
Owner GREAT WALL MOTOR CO LTD
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