Control method and control system for fuel injection quantity in cylinder cut-off mode

A control method and control system technology, applied in fuel injection control, electrical control, engine control, etc., can solve problems such as unstable engine output

Active Publication Date: 2022-04-26
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to at least solve the problem of unstable output caused by the operation of the engine in the deactivated mode

Method used

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  • Control method and control system for fuel injection quantity in cylinder cut-off mode
  • Control method and control system for fuel injection quantity in cylinder cut-off mode
  • Control method and control system for fuel injection quantity in cylinder cut-off mode

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Embodiment Construction

[0043] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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Abstract

The invention belongs to the technical field of engines, and in particular relates to a method and a control system for controlling the fuel injection quantity in a cylinder cut-off mode. According to the quantity and the distance between the continuous fuel injection cylinders behind the cut-off cylinders and the distance between the cut-off cylinders in the cycle, the compensation coefficient of the fuel injection quantity of the engine is determined according to the quantity and the distance, and the fuel injection quantity of the fuel injection cylinder is calculated according to the compensation coefficient, according to the present invention The method of controlling the fuel injection volume in the deactivated cylinder mode, after compensating the fuel injection volume of the fuel injection cylinder in the engine running in the deactivated cylinder mode, reduces the uneven interval between the fuel injection cylinders and continuous fuel depletion caused by the deactivated cylinder. The fluctuation difference of the torque change caused by the situation improves the stability of the torque output.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a control method and a control system for fuel injection quantity in a cylinder cut-off mode. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] The operating speed and load range of the engine is very wide, and the fuel economy is poor at low load rates. With the stricter fuel consumption regulations, the demand for reducing the fuel consumption of engines with multiple cylinders and large displacement is becoming more and more urgent. cylinder technology. Cylinder cut-off technology can close one or several cylinders when the engine is partially loaded. In order to ensure that the engine power remains unchanged, it is necessary to increase the load rate of the working cylinders, thereby improving the mechanical efficiency of the engine, reducing pumping losses,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30F02D17/02
CPCF02D41/3005F02D41/0087F02D17/02
Inventor 周荣强王菁
Owner WEICHAI POWER CO LTD
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