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

Method for realizing gasoline engine idling and small-load controllable spontaneous combustion

A low-load, gasoline engine technology, applied in engine control, mechanical equipment, machine/engine, etc., can solve problems such as difficulty in using external heating sources, unfavorable combustion control, and inability to solve spontaneous combustion, achieve stable and reliable ignition, and promote application. Effect

Active Publication Date: 2013-09-11
TIANJIN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the compression ratio, although it is beneficial to the expansion of small loads, but it is not conducive to the combustion control at high loads. At the same time, it is difficult to use the method of external heat source in practical applications.
Of course, the most important thing is that this method can not solve the problem of exhaust gas management gasoline engine controllable spontaneous combustion expansion to small loads under the equivalent air-fuel ratio

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 for realizing gasoline engine idling and small-load controllable spontaneous combustion
  • Method for realizing gasoline engine idling and small-load controllable spontaneous combustion
  • Method for realizing gasoline engine idling and small-load controllable spontaneous combustion

Examples

Experimental program
Comparison scheme
Effect test

experiment example

[0022]The experimental example is carried out on a Ricardo Hydra 140 single-cylinder experimental gasoline engine equipped with a 4VVAS system. The engine bore and stroke are both 86mm, and the compression ratio is 10.67. The experiment uses the equivalent air-fuel ratio, intake port injection, cooling The water temperature is controlled at 80°C, and the engine oil temperature is controlled at 55°C. The experimental results show that the controllable spontaneous combustion of gasoline engine can be realized under the condition of light load, and it saves a lot of fuel consumption compared with the traditional SI combustion. The most important thing is that after realizing the controllable self-ignition and heat release at small loads through the present invention, there is no need to switch the combustion mode at medium and small loads in practical application. For the commonly used urban road conditions, the engine will often work under small and medium load conditions. Afte...

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 for realizing gasoline engine idling and small-load controllable spontaneous combustion. When a controllable spontaneous combustion engine reaches the lower limit of the conventional load, in order to further reduce the engine load, a measure of bringing forward the opening moment of an air inlet door when the residue waste gas rate in an engine cylinder is increased is adopted, and in addition, the closing moment of the air inlet door is maintained to be positioned in a range of the maximum engine effective compression ratio position + / -30 DEG CA. The method belongs to the combustion control strategy used for expanding the operation range of the controllable spontaneous combustion gasoline engine in the small-load and idling direction developed on the basis of a fully variable air door movement mechanism. The method disclosed by the invention can solve the realization problem of the controllable spontaneous combustion of the gasoline engine at the small load, so the introduction of the complicated combustion mode switching process into the small-load work condition under the severe combustion condition is avoided, the practical application of the controllable spontaneous combustion gasoline engine can be promoted, simultaneously, the controllable spontaneous combustion can be realized under the small-load work condition, and the oil can be saved by more than 17 percent through being compared with the traditional spark ignition (SI) combustion of the gasoline engine.

Description

technical field [0001] The invention belongs to a combustion control method of an automobile engine, in particular to a combustion control strategy for expanding the operating range of a controllable spontaneous combustion gasoline engine for expanding waste gas management under an equivalent air-fuel ratio to light load and idle conditions. Background technique [0002] The controllable spontaneous combustion combustion technology of gasoline engines is the representative of the new generation of engine combustion concepts. It is a new combustion technology developed to meet the more stringent regulatory requirements in the next 10 to 20 years. Compared with the traditional throttle control SI combustion, it has 10% to 30% energy saving oil potential. However, there are still some problems in the controllable self-ignition combustion technology that need to be overcome, one of which is the expansion of its operating range to small load and idle conditions. The main reason ...

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): F02D13/02
Inventor 谢辉陈韬李乐
Owner TIANJIN UNIV
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