Method and system for controlling oil injection according to wearing degree of oil injector

A technology of wear degree and fuel injector, which is applied in the direction of fuel injection control, electrical control, engine control, etc., can solve the problems of decreased reliability of the whole machine, shortened life of the whole machine, and increase of diesel engine power, so as to maintain power and improve reliability Effects on Sexuality and Lifespan

Active Publication Date: 2012-07-25
WEICHAI POWER CO LTD
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned technical solution has the following technical problems: after the diesel engine is used for a period of time, the oil hole of the fuel injector will be worn accordingly, that is, the fuel injection volume of the fuel injector will increase within the unit power-on time
However, the ECU still controls the power supply time of the fuel inj

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for controlling oil injection according to wearing degree of oil injector
  • Method and system for controlling oil injection according to wearing degree of oil injector
  • Method and system for controlling oil injection according to wearing degree of oil injector

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0046] Please refer to figure 2 , figure 2 It is a flow chart of another specific embodiment of the method for controlling fuel injection according to the degree of wear of the fuel injector provided by the present invention. This embodiment comprises the following steps:

[0047] S210) When the fuel injector is not worn, select a number of specific throttle openings, and obtain speed signals corresponding to each specific throttle opening at this time;

[0048] The difference from the above-mentioned embodiment is that in this embodiment, a number of specific throttle openings are selected in the calibration stage, and the specific throttle openings can be selected according to a certain rule, such as increasing by 5% intervals, of course, they can also be increased according to other ratios , such as 3%, 10%, etc. The storage unit can establish and store the MAP of each specific throttle opening and the corresponding speed signal.

[0049] S220) Obtain the current spee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and a system for controlling oil injection according to a wearing degree of an oil injector. The disclosed method comprises the following steps: selecting a specific accelerator opening degree under an unworn state, obtaining and storing a corresponding speed signal; obtaining a current speed signal corresponding to the stored specific accelerator opening degree at the current state; comparing the current speed signal with the speed signal, obtaining a current wearing coefficient of the oil injector; and correcting the predetermined power-up time MAP (two-dimensional data map) according to the current wearing coefficient of the oil injector. The control method and the system can perform self-checking according to the predetermined data, and then correct the power-up time MAP after the wearing coefficient is analyzed out, and the oil injector is compensated in a way of self-checking and correction even that the oil injector is worn, so that the oil injector can inject oil according to the actually needed oil injection amount even the oil injector is worn, the power of the diesel engine is held, and the reliability and the service life of the whole device are enhanced.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to a method and system for controlling fuel injection according to the wear degree of fuel injectors. Background technique [0002] With the continuous improvement of domestic and international diesel engine emission regulations, electronically controlled diesel engines have become the main models for current and later development. [0003] The fuel injector is one of the important parts of the diesel engine, and its fuel injection volume is mainly controlled by the electronic control unit (ECU) of the diesel fuel injection system. In the actual use of diesel engines, the fuel injection volume of the fuel injector is different for different working conditions. Assuming that the fuel injection volume per unit time is constant, the different fuel injection volumes of the fuel injector are mainly determined by different power-on times. The power-on time is the power supply time...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F02D41/30F02D41/04
Inventor 韩峰黄国龙田新伟文志永徐贤发张晓琳
Owner WEICHAI POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap