EP1314861A3 - Process and system for determining valve lash and cam positions - Google Patents
Process and system for determining valve lash and cam positions Download PDFInfo
- 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- Withdrawn
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
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- 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.
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)
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)
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)
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 |
-
2001
- 2001-11-23 DE DE10157514A patent/DE10157514A1/en not_active Ceased
-
2002
- 2002-10-16 EP EP02023184A patent/EP1314861A3/en not_active Withdrawn
- 2002-11-21 US US10/300,910 patent/US6789518B2/en not_active Expired - Lifetime
Patent Citations (3)
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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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
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AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F01L 1/20 20060101AFI20070621BHEP |
|
17P | Request for examination filed |
Effective date: 20070901 |
|
17Q | First examination report despatched |
Effective date: 20071123 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20100813 |