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Fuel ignition quality detection

A fuel, fuel injection technology, used in fuel injection control, combustion engines, internal combustion piston engines, etc.

Active Publication Date: 2013-04-03
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, burning CI fuels with a different CN than the one calibrated may increase emissions and / or noise, for example

Method used

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  • Fuel ignition quality detection
  • Fuel ignition quality detection
  • Fuel ignition quality detection

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Embodiment Construction

[0020] The following description is merely exemplary in nature and is in no way intended to limit the invention and its application or uses. For purposes of clarity, the same reference numbers have been used in the drawings to identify similar elements. As used herein, the phrase at least one of A, B, and C should be understood 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 invention.

[0021] As used herein, the term module refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory, a combinational logic circuit that executes one or more software or firmware programs , and / or other suitable components that provide the described functions.

[0022] The compression ignition (CI) engine system of the present invention detects the cetane number (CN) of...

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Abstract

An engine control system comprises a fuel diagnostic module and a fuel control module. The fuel diagnostic module determines a pressure-ratio difference average (PRDA) based on a pressure in at least one cylinder and determines a cetane number (CN) of a fuel based on the PRDA. The fuel control module actuates fuel injectors based on the CN.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 058,059, filed June 2, 2008. The disclosure of the aforementioned application is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to engine fuel sensing and control, and more particularly to engine fuel sensing and control in compression ignition (CI) engine systems. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors (to the extent described in the Background section) and aspects of this description that are not prior art at the time of filing are neither expressly nor implicitly admitted to be relevant to the present invention. conflicting prior art. [0005] The cetane number (CN) is a measure of the quality of ignition (ie, combustion) of a compressi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/34
CPCF02D19/0623F02D19/0628F02D41/005F02D35/023F02D35/02F02D19/061Y02T10/36F02D19/0652F02D41/0025F02D19/088F02D2200/0612Y02T10/30
Inventor C·-B·M·关F·A·马特库纳斯P·A·贝蒂森D·T·弗伦奇I·哈斯卡拉Y·-Y·王
Owner GM GLOBAL TECH OPERATIONS LLC