CA2610388A1 - Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine - Google Patents

Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine Download PDF

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Publication number
CA2610388A1
CA2610388A1 CA002610388A CA2610388A CA2610388A1 CA 2610388 A1 CA2610388 A1 CA 2610388A1 CA 002610388 A CA002610388 A CA 002610388A CA 2610388 A CA2610388 A CA 2610388A CA 2610388 A1 CA2610388 A1 CA 2610388A1
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CA
Canada
Prior art keywords
data set
signal data
accelerometer
produce
real
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002610388A
Other languages
French (fr)
Other versions
CA2610388C (en
Inventor
Duran Cheung
David Mumford
Jian Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westport Fuel Systems Canada Inc
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002610388A priority Critical patent/CA2610388C/en
Publication of CA2610388A1 publication Critical patent/CA2610388A1/en
Priority to EP08855343.3A priority patent/EP2220473B1/en
Priority to PCT/CA2008/002085 priority patent/WO2009067804A1/en
Application granted granted Critical
Publication of CA2610388C publication Critical patent/CA2610388C/en
Priority to US12/788,276 priority patent/US8108131B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/11—Testing internal-combustion engines by detecting misfire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1012—Engine speed gradient
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1015—Engines misfires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1497—With detection of the mechanical response of the engine
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness

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: (i) receive real-time accelerometer signals from the accelerometer sensor, (ii) digitize and filter the real-time accelerometer signal to isolate data in a frequency range associated with combustion to produce a filtered signal data set, (iii) integrate the filtered signal data set to produce an integrated signal data set, and, (iv) compare the integrated signal data set to the predetermined reference data set to detect when misfire occurs.
CA002610388A 2007-11-29 2007-11-29 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine Active CA2610388C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002610388A CA2610388C (en) 2007-11-29 2007-11-29 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine
EP08855343.3A EP2220473B1 (en) 2007-11-29 2008-11-27 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine
PCT/CA2008/002085 WO2009067804A1 (en) 2007-11-29 2008-11-27 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine
US12/788,276 US8108131B2 (en) 2007-11-29 2010-05-26 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002610388A CA2610388C (en) 2007-11-29 2007-11-29 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine

Publications (2)

Publication Number Publication Date
CA2610388A1 true CA2610388A1 (en) 2008-02-18
CA2610388C CA2610388C (en) 2009-09-15

Family

ID=39103172

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002610388A Active CA2610388C (en) 2007-11-29 2007-11-29 Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine

Country Status (4)

Country Link
US (1) US8108131B2 (en)
EP (1) EP2220473B1 (en)
CA (1) CA2610388C (en)
WO (1) WO2009067804A1 (en)

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Also Published As

Publication number Publication date
EP2220473B1 (en) 2019-05-22
CA2610388C (en) 2009-09-15
EP2220473A4 (en) 2013-11-13
US8108131B2 (en) 2012-01-31
US20100286891A1 (en) 2010-11-11
EP2220473A1 (en) 2010-08-25
WO2009067804A1 (en) 2009-06-04

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