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Method for controlling position of fuel spray nozzle based on engine working conditions

A technology for engines and fuel injectors, applied in engine components, engine control, combustion engines, etc., to achieve the effects of reducing fuel consumption, increasing medium and high-speed power, and prolonging service life

Inactive Publication Date: 2017-06-27
JINJIANG LUOSHAN YONGMING COMP SOFTWARE DEV SERVICE DEPT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a variable compression ratio engine, which solves the problem of uniform compression ratio of different engine loads in the prior art

Method used

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  • Method for controlling position of fuel spray nozzle based on engine working conditions
  • Method for controlling position of fuel spray nozzle based on engine working conditions
  • Method for controlling position of fuel spray nozzle based on engine working conditions

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0053] A variable compression ratio engine, which includes a variable compression ratio mechanism capable of changing the mechanical compression ratio, and makes the compression ratio when the engine operates at a low load completely different from the compression ratios when the engine operates at a medium load and at a high load, realizing To meet different compression ratios at different engine loads and different engine speeds. Thus, the service life of the roc...

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Abstract

The invention provides a method for controlling different positions of a fuel spray nozzle in a combustion chamber. The method comprises the steps that work supplied to a motor is adjusted based on different rotating speeds of an engine, the increasing rotation angle supplied to the motor is adjusted so as to promote a variable compression piston to stretch out or the decreasing rotation angle supplied to the motor is adjusted so as to promote the variable compression piston to retract, and the fuel spray position of the fuel spray nozzle in the combustion chamber is changed through stretching or retraction of the variable compression piston. The fuel spray position is also changed in the state of different compression ratios, the requirements for different compression ratios and different fuel spray positions when different engine loads and different engine rotating speeds exist are met, the fuel combustion efficiency is improved, and therefore the work rate and power of the engine are improved.

Description

technical field [0001] The present invention relates to a control system and method for the position of a fuel injector in a gasoline engine. Background technique [0002] The compression ratio of the engine refers to the ratio of the stroke of the working piston in the cylinder to the combustion chamber. The higher the compression ratio, the better the combustion efficiency. However, the higher the compression ratio, the higher the knocking of the engine, and the easier it is for the cylinder and piston to knock and wear. Especially under high load conditions, the power of the engine will drop instead. [0003] As the grade of gasoline gets higher and higher, the increase of octane number is to reduce the knocking caused by the high compression ratio. However, its effect is limited. It can only be controlled at 13:1. Of course, due to the refining and manufacturing process of gasoline in the same region, the compression ratio of Chuangchi Sky Technology's engine supplied ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00F02D15/04F02M61/14
CPCF02B23/101F02B25/00F02D15/04F02D37/02F02D43/00F02D2200/101F02D2700/03F02M61/14Y02T10/12
Inventor 庄景阳
Owner JINJIANG LUOSHAN YONGMING COMP SOFTWARE DEV SERVICE DEPT
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