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

Method and apparatus for controlling a homogeneous charge compression ignition engine

一种均质充气、发动机的技术，应用在发动机元件、燃烧发动机、发动机控制等方向，能够解决复杂等问题

Active Publication Date: 2010-01-13
GM GLOBAL TECH OPERATIONS LLC
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Determining changes in operating conditions in real time is complicated by the absence of precise information about changes in the environment and fuel performance

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 apparatus for controlling a homogeneous charge compression ignition engine
  • Method and apparatus for controlling a homogeneous charge compression ignition engine
  • Method and apparatus for controlling a homogeneous charge compression ignition engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Referring now to the drawings, the descriptions are made by way of illustration and not limitation of the invention. Figure 4 and 6 A block diagram of a control scheme constructed in accordance with an embodiment of the invention is depicted. In general, said control schemes are each implemented in a control module 20 adapted to control the operation of the internal combustion engine 10 operating in an auto-ignition mode known as homogeneous charge compression ignition (HCCI). The exemplary engine includes a known multi-cylinder direct injection four-stroke internal combustion engine 10 with pistons reciprocating within cylinders that define variable volume combustion chambers. There is an intake manifold that feeds air into each combustion chamber, air flow is controlled by intake valves, and the flow of combusted gases from the combustion chambers via exhaust passages to the exhaust manifold is controlled by exhaust valves. There is an external flow passage for rec...

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 comprises a method for controlling operation of a homogeneous charge combustion ignition engine operating in an auto-ignition mode. The method comprises determining a desired combustion phasing; and, controlling a mass flowrate of externally recirculated exhaust gas based upon an actual combustion phasing. A closed-loop control scheme is executed to control the mass flowrate of externally recirculated exhaust gas based upon a difference between the actual and the desired combustion phasing.

Description

technical field [0001] The present invention relates to the operation and control of homogeneous charge compression ignition (HCCI) engines. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] In an HCCI (Homogeneous Charge Compression Ignition) engine, combustion is flameless and occurs spontaneously throughout the entire combustion chamber volume. When a homogeneously mixed cylinder charge is compressed and its temperature increases, the cylinder charge autoignites. The ignition timing of the auto-ignition combustion depends on the initial cylinder charge state, mainly including temperature, pressure and composition. Therefore, it is very important to coordinate engine control inputs such as fuel quality, injection timing, and intake and exhaust valve actuation in order to ensure stable HCCI combustion. According to intake and exhaust valve action,...

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 Applications(China)
IPC IPC(8): F02D21/08F02D41/14F02B17/00
CPCF02M25/0752F02D41/0052F02D41/006F02D35/023F02D41/0065F02D2041/001F02D41/1401Y02T10/47F02D41/1454F02D2041/1418F02B1/12F02D2041/1409F02D13/0219F02D41/3035F02D35/028F02M25/0756F02D2041/141Y02T10/128F02M26/48F02M26/01Y02T10/12Y02T10/40
Inventor J·-M·康C·-F·常M·-F·常N·韦穆特
Owner GM GLOBAL TECH OPERATIONS LLC
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