Treatment and Control Method of Super-knock Abnormal Combustion in Supercharged Gasoline Engine

A super-knock and abnormal combustion technology, applied in engine control, fuel injection control, electrical control, etc., can solve problems such as affecting drivability, fluctuations in engine running speed and output torque, and uneven running of the vehicle, reducing engine speed. Load, reduce valve overlap angle, protect from damage

Active Publication Date: 2021-10-12
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of cutting off the engine oil can effectively prevent the super knock from happening again and continuously after the occurrence of super knock, but after a certain cylinder of the engine is cut off and stops working, it will cause large fluctuations in the engine running speed and output torque, and the whole vehicle will not run smoothly , which seriously affects drivability and needs to be optimized

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
  • Treatment and Control Method of Super-knock Abnormal Combustion in Supercharged Gasoline Engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Such as figure 1 As shown, a super-knock abnormal combustion control method for a supercharged gasoline engine is to protect the engine after the super-knock abnormal combustion of the supercharged gasoline engine while ensuring the working stability of the engine, so as to avoid the whole vehicle Driving is not smooth, the specific steps include:

[0033] Step 1, first collect knock signals (vibration signals) through a knock sensor, and perform integral processing on the knock signals by a sensor signal processing module.

[0034] Step 2: The engine controller ECU detects the integrally processed knock signal online in real time, analyzes it and judges the number of consecutive occurrences of super knock abnormal combustion and the position of the cylinder.

[0035] Step 3. If no super knock abnormal combustion is detected, the engine controller ECU will operate according to the original working conditions and parameter settings. If a super knock abnormal combustion ...

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 provides a super-knock abnormal combustion control method for a supercharged gasoline engine, which relates to the technical field of a supercharged gasoline engine, comprising firstly collecting a knock signal through a knock sensor, and performing a process on the knock signal by a sensor signal processing module. processing; then the engine controller ECU detects the processed knock signal online in real time, analyzes it and judges the number of consecutive occurrences of super knock abnormal combustion and the cylinder, and according to the number of consecutive occurrences of super knock abnormal combustion, by using Step-by-step methods of enriching the mixture, reducing the valve overlap angle, reducing the engine load and finally cutting off the oil have effectively controlled the phenomenon of frequent super-knocking and abnormal combustion of the supercharged gasoline engine, and at the same time, taken into account the smooth driving of the whole vehicle Safety, while effectively protecting the engine from damage, improves the driving experience of vehicle users.

Description

technical field [0001] The invention relates to the technical field of supercharged gasoline engines, in particular to a method for controlling and processing super-knock abnormal combustion of a supercharged gasoline engine. Background technique [0002] Gasoline engine supercharging technology is one of the advanced gasoline engine technologies widely used in domestic and foreign automobile industries. It is the mainstream technology to realize the miniaturization and low speed of gasoline engines, and greatly improve the power of gasoline engines and reduce fuel consumption. However, after applying this technology, while the gasoline engine can output higher torque and power, the peak pressure and combustion temperature peaks in the cylinder will also increase significantly, and before the spark plug is ignited, the fuel / air mixture is prone to self-ignition, and also Immediate pre-ignition (also known as super knock in the industry). [0003] The super-knock combustion ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F02D35/02F02D37/00F02D41/22F02D41/30F02D13/02F02D29/02
CPCF02D13/0261F02D29/02F02D35/027F02D37/00F02D41/22F02D41/30
Inventor 余小草刘斌陈绪平袁少伟
Owner CHONGQING CHANGAN AUTOMOBILE 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