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Adaptive control of fuel delivery in direct injection engines

A fuel delivery and self-adaptive technology, applied in engine control, fuel injection control, combustion engine, etc., can solve problems such as adverse effects of engine fuel control

Inactive Publication Date: 2010-09-01
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the fuel control of the engine may be adversely affected

Method used

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  • Adaptive control of fuel delivery in direct injection engines
  • Adaptive control of fuel delivery in direct injection engines
  • Adaptive control of fuel delivery in direct injection engines

Examples

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Embodiment Construction

[0013] The following description is merely exemplary in nature and in no way intended to limit the invention and 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, dedicated, or grouped) and memory that executes one or more software or firmware programs , combinational logic circuits, or other suitable components that provide the described functionality.

[0014] An adaptive fuel delivery control system according to the teachings of the present invention determines a correction factor based on the duration of fuel injection and the difference between the actual fuel quantity and a baseline fuel quantity during fuel injection. The actual fuel quantity is determined based on the pressure drop after fuel injection. An adaptive fuel delivery control system de...

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Abstract

The invention relates to an adaptive control of fuel delivery in direct injection engines. An adaptive fuel delivery control system includes a pressure monitoring module and a flow rate determination module. The pressure monitoring module determines an actual pressure drop after a fuel injection event on an injector. The flow rate determination module determines an adjusted flow rate based on a reference flow rate and the pressure drop.

Description

technical field [0001] The present invention relates to direct injection engines, and more particularly to adaptive control of fuel delivery in direct injection engines. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this Background section, the work of the presently named inventors, and aspects of that description that did not constitute prior art at the time of filing the application, are neither expressly nor implicitly admitted to be prior art to the present invention. technology. [0003] The amount of fuel injected to the engine is controlled to meet fuel economy requirements and emission standards. The amount of fuel passed through the fuel injector is determined based on the duration of fuel injection (ie, the duration when the fuel injector is energized) at a given rail pressure and flow rate. Rail pressure is determined based on the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/04
CPCF02D41/40F02D41/3845F02D2041/1433Y02T10/44F02D41/2441F02D41/2467F02D2200/0602Y02T10/40
Inventor K·J·钦平斯基D·L·迪布尔S·A·杜格拉斯J·R·杜尔佐B·李
Owner GM GLOBAL TECH OPERATIONS LLC