Device and method for expanding compression-ignition type gasoline engine load range

A load range, gasoline engine technology, applied in combustion engines, internal combustion piston engines, incandescent ignition of engines, etc., can solve problems such as the lack of obvious advantages of nitrogen oxides and the improvement of low load limits, to expand the high load range and reduce pressure rise. The effect of high rate and extended low load range

Inactive Publication Date: 2009-01-07
TSINGHUA UNIV
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But each method has disadvantages: When expanding high load, the low load limit is also improved
In a

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
  • Device and method for expanding compression-ignition type gasoline engine load range
  • Device and method for expanding compression-ignition type gasoline engine load range
  • Device and method for expanding compression-ignition type gasoline engine load range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The device and method for expanding the load range of the compression ignition gasoline engine proposed by the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] like figure 1 , image 3 Shown in this embodiment is a device structure diagram for expanding the load range of a compression ignition gasoline engine. The fuel device includes: a cylinder 5, which is connected to the intake passage 3 and the exhaust passage 6 respectively through the valve; the piston 1, which moves up and down in the cylinder , the top of the piston 1 and the inner wall of the cylinder 5 form a combustion chamber, the top of the piston 1 has a pit, and the side wall of the piston 9 slides up and down along the side wall of the cylinder to drive the top of the piston to move up and down; the glow plug 2 extends into the combustion chamber, and the glow plug When the piston 1 runs upwards to the top dead center, the heating e...

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 present invention relates to a device expanding the load range of a compression ignition gasoline engine and a method thereof. The device comprises a cylinder which is respectively connected with an air inlet channel and an exhaust channel by a vale, a piston which moves up and down in the cylinder and is provided with a drop pit at the top, an electric heater plug with a heating end extended into the drop pit when the piston runs to an upper stop point, and an oil atomizer with a nozzle opposite to the drop pit when the piston runs to the upper stop point. The method has the steps as follows: the oil atomizer sprays oil respectively during an air intake stroke and a compression stroke to form delaminated mixed gas in dense and thin areas; the electric heater plug heats the mixed gas in the cylinder to form heat delamination; the area with dense gas and high temperature in the drop pit of a combustion chamber fires firstly and ignites other areas to fire accordingly. The present invention controls the dense and the thin areas to fire successively, so as to reduce the pressure increase rate in the cylinder, ensure the reliable firing and achieve the purpose of developing HCCI combustion executable high and low charge ranges at the same time.

Description

technical field [0001] The invention relates to the technical field of combustion of automobile engines and internal combustion engines, in particular to a device and method for expanding the load range of a compression ignition gasoline engine. Background technique [0002] Homogeneous Charge Compression Ignition (HCCI) or Controlled Auto Ignition (CAI) combustion methods applied to compression-ignition gasoline engines can significantly improve the combustion thermal efficiency of gasoline engines, greatly reduce fuel consumption, and simultaneously oxidize nitrogen Compared with ordinary gasoline engines, the emission of NOx is reduced by more than 95%, which is a research hotspot in the world at present. [0003] However, due to the limitation of misfire and deflagration, the operating range of homogeneous charge compression combustion HCCI engine is narrow. Under low load conditions, the combustion efficiency is low and ignition is difficult, so that HCCI combustion ha...

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): F02B1/14
CPCY02T10/128F02D41/3035F02P19/026Y02T10/12
Inventor 阳冬波王志王建昕徐帆
Owner TSINGHUA UNIV
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