EP1314861A3 - Process and system for determining valve lash and cam positions - Google Patents

Process and system for determining valve lash and cam positions Download PDF

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Publication number
EP1314861A3
EP1314861A3 EP02023184A EP02023184A EP1314861A3 EP 1314861 A3 EP1314861 A3 EP 1314861A3 EP 02023184 A EP02023184 A EP 02023184A EP 02023184 A EP02023184 A EP 02023184A EP 1314861 A3 EP1314861 A3 EP 1314861A3
Authority
EP
European Patent Office
Prior art keywords
valve
camshaft
valve lash
combustion engine
internal combustion
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.)
Withdrawn
Application number
EP02023184A
Other languages
German (de)
French (fr)
Other versions
EP1314861A2 (en
Inventor
Georg Buhl
Markus Müller
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1314861A2 publication Critical patent/EP1314861A2/en
Publication of EP1314861A3 publication Critical patent/EP1314861A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/24—Safety means or accessories, not provided for in preceding sub- groups of this group
    • 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
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • 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
    • F02D2200/025—Engine noise, e.g. determined by using an acoustic sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Die vorliegende Erfindung betrifft ein Verfahren und System zum Erfassen des Zustands eines Ventiltriebs, insbesondere des Ventilspiels, und der Position mindestens eines Ventilöffnungsnockens einer Nockenwelle eines Verbrennungsmotors durch Verarbeiten von Signalen, die von mindestens einem Körperschallsensor (z. B. Klopfsensor) erzeugt werden. Dazu wird vorzugsweise aus den durch den Körperschallsensor erzeugten Signalen mindestens ein charakteristischer Signalverlauf identifiziert, der zu bestimmten Zeiten während eines Zyklus des Verbrennungsmotors auftritt, und mit einem gespeicherten Referenzsignal verglichen. Als Ergebnis kann auf den Zustand eines Ventiltriebs, z. B. das Ventilspiel, und/oder die Position mindestens eines Ventilöffnungsnockens der Nockenwelle geschlossen werden.The present invention relates to a method and system for detecting the state of a valve train, in particular the valve clearance, and the position of at least one valve opening cam of a camshaft of an internal combustion engine by processing signals generated by at least one structure-borne sound sensor (eg knock sensor). For this purpose, at least one characteristic signal profile which occurs at specific times during a cycle of the internal combustion engine is preferably identified from the signals generated by the structure-borne sound sensor and compared with a stored reference signal. As a result, the condition of a valvetrain, e.g. B. the valve clearance, and / or the position of at least one valve opening cam of the camshaft are closed.

EP02023184A 2001-11-23 2002-10-16 Process and system for determining valve lash and cam positions Withdrawn EP1314861A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10157514 2001-11-23
DE10157514A DE10157514A1 (en) 2001-11-23 2001-11-23 Method and system for detecting valve clearance and the position of the valve opening cams

Publications (2)

Publication Number Publication Date
EP1314861A2 EP1314861A2 (en) 2003-05-28
EP1314861A3 true EP1314861A3 (en) 2007-07-25

Family

ID=7706717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02023184A Withdrawn EP1314861A3 (en) 2001-11-23 2002-10-16 Process and system for determining valve lash and cam positions

Country Status (3)

Country Link
US (1) US6789518B2 (en)
EP (1) EP1314861A3 (en)
DE (1) DE10157514A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004048599B4 (en) * 2004-10-06 2006-12-14 Robert Bosch Gmbh Method for determining control times of variably controlled gas exchange valves
US7387018B2 (en) * 2006-11-17 2008-06-17 Gm Global Technology Operations, Inc. Discrete variable valve lift diagnostic systems and methods
DE102006054603A1 (en) * 2006-11-20 2008-05-21 Robert Bosch Gmbh Diagnosing e.g. components damages detecting, method for e.g. diesel engine of motor vehicle, involves recording sound of engine using microphone, and converting sound into electrical signal for diagnosing operating condition of engine
US20090319160A1 (en) * 2008-06-24 2009-12-24 Callahan Joseph E Active exhaust valve control strategy for improved fuel consumption
CN101868603A (en) * 2009-01-09 2010-10-20 丰田自动车株式会社 Abnormality detector for internal combustion engine
DE102012204086A1 (en) 2012-03-15 2013-09-19 Bayerische Motoren Werke Aktiengesellschaft Diagnostic apparatus for vehicle workshop tester to detect noise leading to defects in clearance compensation element of motor car, has evaluation module to determine amplitude of raw signal of impact sound sensor, exceeding threshold
FR2999229B1 (en) * 2012-12-10 2014-11-28 Sncf METHOD AND DEVICE FOR ADJUSTING A PLURALITY OF FUNCTIONAL GAMES OF MECHANICAL ORGANS OF A THERMAL MOTOR
DE102013009427B4 (en) * 2013-06-05 2017-08-31 Audi Ag Method for operating an internal combustion engine and corresponding internal combustion engine
DE102014008898B3 (en) * 2014-06-14 2015-08-13 Audi Ag Method for operating an internal combustion engine and corresponding internal combustion engine
US20160370255A1 (en) * 2015-06-16 2016-12-22 GM Global Technology Operations LLC System and method for detecting engine events with an acoustic sensor
US9933334B2 (en) * 2015-06-22 2018-04-03 General Electric Company Cylinder head acceleration measurement for valve train diagnostics system and method
DE102017124217A1 (en) * 2017-10-18 2019-04-18 Man Diesel & Turbo Se Method and control device for operating an internal combustion engine
DE102018126501B3 (en) 2018-10-24 2019-12-19 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Method for predicting the maintenance of components of an internal combustion engine using a structure-borne noise sensor
CN113864049B (en) * 2021-09-29 2022-10-14 广西玉柴机器股份有限公司 Diagnosis method for judging valve clearance abnormity according to knock signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316588A1 (en) * 1982-05-12 1983-11-17 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, 8010 Graz VALVE CLEARANCE CONTROL DEVICE
JPH0972208A (en) * 1995-09-04 1997-03-18 Toyota Motor Corp Valve clearance detecting device
DE19917772A1 (en) * 1999-04-20 2000-10-26 Deutz Ag Internal combustion engine; has knocking sensor connected to evaluation electronics, which receive signals during movement of gas exchange or injection valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3903566A1 (en) * 1989-02-07 1990-08-09 Bosch Gmbh Robert DEVICE FOR DETECTING DANGER misfire
JP2590384B2 (en) 1990-09-03 1997-03-12 日産自動車株式会社 Operating state diagnostic device for variable valve timing mechanism in internal combustion engine
JP2943042B2 (en) 1994-02-28 1999-08-30 株式会社ユニシアジェックス Function diagnosis device for variable valve mechanism of internal combustion engine
DE19623698A1 (en) * 1996-06-14 1997-12-18 Fev Motorentech Gmbh & Co Kg Control of piston IC engine valve actuator
JPH10288017A (en) 1997-04-17 1998-10-27 Nissan Motor Co Ltd Operation diagnosing device for variable valve mechanism of internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316588A1 (en) * 1982-05-12 1983-11-17 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, 8010 Graz VALVE CLEARANCE CONTROL DEVICE
JPH0972208A (en) * 1995-09-04 1997-03-18 Toyota Motor Corp Valve clearance detecting device
DE19917772A1 (en) * 1999-04-20 2000-10-26 Deutz Ag Internal combustion engine; has knocking sensor connected to evaluation electronics, which receive signals during movement of gas exchange or injection valve

Also Published As

Publication number Publication date
US6789518B2 (en) 2004-09-14
DE10157514A1 (en) 2003-06-05
US20030145813A1 (en) 2003-08-07
EP1314861A2 (en) 2003-05-28

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