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
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  • 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

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  • 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

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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...

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PUM

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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

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Application Information

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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
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