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Title: Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine

Abstract

The method comprises operating an engine and collecting a real-time accelerometer signal from an accelerometer sensor. The real-time accelerometer signal is digitized and filtered to isolate data in a frequency range associated with combustion to produce a filtered signal data set. The filtered signal data set is integrated to produce an integrated signal data set, and misfire is detected by comparing the integrated signal data set with a predetermined reference data set associated with the same operating point. The apparatus is a control system for an engine that comprises an accelerometer sensor mounted to the engine; a look-up table in which is stored predetermined reference data sets, in association with predetermined operating conditions; and an electronic controller programmed to carry out the foregoing method.

Inventors:
; ;
Issue Date:
Research Org.:
Westport Power Inc., West Vancouver, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531837
Patent Number(s):
8108131
Application Number:
12/788,276
Assignee:
Westport Power Inc. (West Vancouver, CA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
FC26-06NT42967
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010-05-26
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Huang, Jian, Cheung, Duran, and Mumford, David. Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine. United States: N. p., 2012. Web.
Huang, Jian, Cheung, Duran, & Mumford, David. Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine. United States.
Huang, Jian, Cheung, Duran, and Mumford, David. Tue . "Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine". United States. https://www.osti.gov/servlets/purl/1531837.
@article{osti_1531837,
title = {Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine},
author = {Huang, Jian and Cheung, Duran and Mumford, David},
abstractNote = {The method comprises operating an engine and collecting a real-time accelerometer signal from an accelerometer sensor. The real-time accelerometer signal is digitized and filtered to isolate data in a frequency range associated with combustion to produce a filtered signal data set. The filtered signal data set is integrated to produce an integrated signal data set, and misfire is detected by comparing the integrated signal data set with a predetermined reference data set associated with the same operating point. The apparatus is a control system for an engine that comprises an accelerometer sensor mounted to the engine; a look-up table in which is stored predetermined reference data sets, in association with predetermined operating conditions; and an electronic controller programmed to carry out the foregoing method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {1}
}

Works referenced in this record:

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patent, November 2000


Reconfigurable filter system
patent, February 1998


Method and device for detecting knocking
patent, November 2007


Control apparatus for an internal combustion engine
patent, June 1992


Determining crankshaft acceleration in an internal combustion engine
patent, March 1992


Adaptive method for detecting misfire in an internal combustion engines using an engine-mounted accelerometer
patent, May 2002


Knock detection method and apparatus with dual integration windows
patent, July 1996


Combustion knock detection and control through statistical characterization of knock levels
patent, August 2008


Controller and control method for an internal combustion engine using an engine-mounted accelerometer
patent, August 2001


Device for error recognition in a digital signal evaluation unit
patent, December 2005


Knock determining apparatus for internal combustion engine
patent, February 2007


    Works referencing / citing this record:

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    Knocking detecting apparatus for internal combustion engine
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    System and method for determining knock margin for multi-cylinder engines
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    Method of detecting misfire in an internal combustion engine
    patent, June 2014


    Methods and systems to derive health of mating cylinder using knock sensors
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    System and method for determining location and value of peak firing pressure
    patent, February 2018