Engine cranking system with cylinder deactivation for a direct injection engine

An engine starting and engine technology, applied in the direction of engine starting, engine components, combustion engines, etc., can solve the problems of low starting speed, unable to provide fuel flow pressure, etc.

Inactive Publication Date: 2009-03-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high pressure pump cannot provide the required fuel flow pressure during start-up due to low start-up speed

Method used

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  • Engine cranking system with cylinder deactivation for a direct injection engine
  • Engine cranking system with cylinder deactivation for a direct injection engine
  • Engine cranking system with cylinder deactivation for a direct injection engine

Examples

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Embodiment Construction

[0015] The following description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the term "module" refers to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared processor, dedicated processor, or group of processors) that executes one or more software or firmware programs, and memory , combinational logic circuits, and / or other suitable components that provide the described functionality. As used herein, the phrase "at least one of A, B, and C" should be interpreted to mean a logical (A or B or C) using a non-exclusive logical OR. It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

[0016] In the following description, the term "starting" refers to turning the engi...

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PUM

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Abstract

The invention relates to an engine cranking system with cylinder deactivation for a direct injection engine. An engine cranking system includes fuel injectors that are associated with multiple combustion chambers of an engine. The fuel injectors include a first fuel injector that is associated with a first combustion chamber. A second fuel injector is associated with a second combustion chamber. A control module is coupled to the fuel injectors and operates the first fuel injector in a deactivated state for a first chamber cycle during cranking of said engine. The first chamber cycle includesintake and exhaust strokes and is associated with a first combustion chamber.

Description

technical field [0001] The present disclosure relates to the operation of direct injection engines, and more particularly to starting and starting of direct injection engines. Background technique [0002] The background art described herein is for the purpose of generally presenting a context for the disclosure. The work of the present inventors, to the extent described in this Background section, and aspects of the specification that, at the time of filing, might not otherwise be considered prior art are not explicitly or implicitly considered prior art to the present disclosure. [0003] Spark ignition direct injection (SIDI) systems have been proposed for internal combustion engines to improve fuel economy. The SIDI system includes a high-pressure fuel injection system that injects fuel directly into the engine's combustion chamber. This results in stratified charging within the combustion chamber, which results in fuel economy benefits. This benefit is provided by le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/06F02D41/30
CPCF02D41/0087F02B2075/125Y02T10/18Y02T10/123F02N19/004F01L9/04F02D41/062F02D2041/0012F02D13/06F01L13/0005F01L9/02F01L9/10F01L9/20Y02T10/12
Inventor J·M·格威德特J·T·什巴塔V·拉马潘S·R·史密斯M·J·卢奇多
Owner GM GLOBAL TECH OPERATIONS LLC
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