Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oil film compensation process when fuel oil injection

A technology of fuel injection and compensation method, which is applied in the direction of fuel injection control, engine control, machine/engine, etc., and can solve problems such as high fuel consumption and unstable acceleration and deceleration performance of automobiles

Inactive Publication Date: 2009-07-29
CHINA VAGON AUTOMOTIVES HLDG CO LTD
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, in the calculation of the correction value of fuel injection time, the electronic control injection at home and abroad has ignored the influence of the change of the oil film attached to the intake manifold on the actual fuel injection quantity of the engine, or has not formed an effective correction algorithm to control the oil film The correction amount of the compensation, and other fuel injection correction values ​​are modified, the result is: the fuel injection correction value cannot really reflect the changes in the driving state of the car, the acceleration and deceleration performance of the car is unstable, and the fuel consumption is high

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
  • Oil film compensation process when fuel oil injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0018] First introduce the calibration and calibration data table. Calibration, the English expression is Calibration, which means calibration. An engine cannot be matched to only one vehicle type, and different vehicle types have different performance requirements: sports cars require high-speed and high-power, SUV models require low-speed and high-torque, ordinary cars require balanced performance, etc., one engine achieves Different performance is achieved through calibration. The main contents of calibration include: fuel injection quantity, ignition timing, electronic throttle opening, idle speed control valve duty cycle, exhaust gas circulation, turbocharger bleed valve opening timing and ot...

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 an oil film compensation method used in fuel oil injection. The method comprises the following steps: collecting air inflow signal and crankshaft rotating speed signal; confirming basic injecting time (TIB) of an engine according to the crankshaft rotating speed signal and the air inflow signal; judging that the engine is in sharp accelerating state or sharp decelerating state according to the TIB; inquiring a marking data table of the engine to obtain fast compensation amount and slow compensation amount of an intake manifold of the engine according to the state of the engine; and acquiring the oil film compensation value in the engine oil injection process according to the fast compensation amount and slow compensation amount of the intake manifold of the engine. The method can accurately compensate the oil injection amount by precisely calculating the oil film compensation value in fuel oil injection, thus greatly improving the power output performance in acceleration and deceleration, obtaining the optimal air-fuel ratio of an automobile in accelerating or decelerating working condition, and adjusting the running performance of the automobile by changing oil injection sum.

Description

Technical field [0001] The invention relates to the field of engines, in particular to an oil film compensation method during fuel injection. Background technique [0002] Automobile engine fuel injection technology mainly refers to the control of fuel injection timing and fuel injection volume. The fuel injection timing control is to control the time at which the engine starts to inject fuel, and the fuel injection volume control is to control how much fuel the engine should inject each time. The engine's control of the fuel injection volume is mainly to determine the basic volume based on the intake air volume and speed detected by the air flow meter, and then modify it according to the coolant temperature, intake air temperature, throttle opening, battery voltage and other parameters, and finally calculate the injection volume. Oil time. [0003] In the calculation of the fuel injection time correction value, the electronic control injection at home and abroad ignores the infl...

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): F02D41/30F02D41/04F02D41/14
Inventor 李朝晖张步亮
Owner CHINA VAGON AUTOMOTIVES HLDG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com