GB2009406A - Detecting knocking in an engine - Google Patents
Detecting knocking in an engineInfo
- Publication number
- GB2009406A GB2009406A GB7845661A GB7845661A GB2009406A GB 2009406 A GB2009406 A GB 2009406A GB 7845661 A GB7845661 A GB 7845661A GB 7845661 A GB7845661 A GB 7845661A GB 2009406 A GB2009406 A GB 2009406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- engine
- produced
- knocking
- normal operation
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/225—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Testing Of Engines (AREA)
Abstract
Vibration produced in an internal combustion engine during normal operation is detected at 1, and a corresponding electrical signal is produced and stored at 9, 10 and 11. Meanwhile, the engine is continuously monitored, and the onset of, and vibration of the engine during, knocking are detected and a corresponding electrical signal is produced. Then the signal corresponding to normal operation of the engine is instantaneously substracted at 12 from the signal corresponding to knocking in the engine to produce a resultant signal in which contributions due to background engine noise during knocking are suppressed. The signal stored is produced from the output signal of the detector 1 by utilizing a voltage controlled oscillator 9 which produces an output signal having a frequency at the detector output frequency and a storage device 10 which detects the peak of the detector output signal during normal operation, the outputs of the oscillator 9 and the device 10 being combined at 11 to provide a signal which is applied to the subtractor 12. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT30412/77A IT1088734B (en) | 1977-12-06 | 1977-12-06 | AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT EQUIPMENT |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2009406A true GB2009406A (en) | 1979-06-13 |
GB2009406B GB2009406B (en) | 1982-04-07 |
Family
ID=11229715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7845661A Expired GB2009406B (en) | 1977-12-06 | 1978-11-22 | Detection of knocking in an engine |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2852760C2 (en) |
FR (1) | FR2411399A1 (en) |
GB (1) | GB2009406B (en) |
IT (1) | IT1088734B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0022565A1 (en) * | 1979-07-11 | 1981-01-21 | Creative Tool Company Corp. | Compression rate analyzer |
EP0047394A1 (en) * | 1980-08-14 | 1982-03-17 | Hitachi, Ltd. | Engine knock control apparatus |
FR2494770A2 (en) * | 1979-06-07 | 1982-05-28 | Daimler Benz Ag | Anti-knock ignition control circuit for IC engine - uses filter circuits and timing monostable to reject disturbances not caused by knocking |
EP0148308A2 (en) * | 1980-08-14 | 1985-07-17 | Hitachi, Ltd. | Engine knock control apparatus |
GB2201780A (en) * | 1987-03-04 | 1988-09-07 | Lucas Ind Plc | A noise-cancelling circuit for an ic engine knock-detector |
DE19520033A1 (en) * | 1995-05-31 | 1996-12-05 | Bayerische Motoren Werke Ag | Device for generating a synthetic signal for testing knock control functions |
ES2099667A1 (en) * | 1993-06-26 | 1997-05-16 | Mann & Hummel Filter | Method for determining a noise signal from total noise |
WO2002036304A2 (en) * | 2000-10-24 | 2002-05-10 | Consiglio Nazionale Delle Ricerche | Method and relevant device for the automatic supervision of the degree of wear of the tools employed in the unmanned mechanical working |
GB2564694A (en) * | 2017-07-20 | 2019-01-23 | Delphi Automotive Systems Lux | Combustion noise detection in an internal combustion engine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2923056C2 (en) * | 1979-06-07 | 1982-05-13 | Daimler-Benz Ag, 7000 Stuttgart | Device for recognizing undesired combustion processes in externally ignited internal combustion engines |
DE2942250A1 (en) * | 1979-10-19 | 1981-05-07 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR DETECTING THE VIBRATIONS WHEN TAPPING AN INTERNAL COMBUSTION ENGINE |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619830A (en) * | 1948-09-13 | 1952-12-02 | Phillips Petroleum Co | Detonation meter |
US3387222A (en) * | 1965-07-01 | 1968-06-04 | Ibm | Adaptive threshold signal detector with noise suppression |
FR2063377A5 (en) * | 1969-10-13 | 1971-07-09 | Mobil Oil France | |
DE2146361C3 (en) * | 1970-09-22 | 1974-01-03 | Snam Progetti S.P.A., Mailand (Italien) | Device for measuring knocking in internal combustion engines |
US3822583A (en) * | 1972-11-30 | 1974-07-09 | Standard Oil Co | Method for determining octane ratings of fuels under road conditions |
IT993371B (en) * | 1973-09-24 | 1975-09-30 | Snam Progetti | AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT |
-
1977
- 1977-12-06 IT IT30412/77A patent/IT1088734B/en active
-
1978
- 1978-11-22 GB GB7845661A patent/GB2009406B/en not_active Expired
- 1978-12-05 FR FR7834271A patent/FR2411399A1/en active Granted
- 1978-12-06 DE DE2852760A patent/DE2852760C2/en not_active Expired
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2494770A2 (en) * | 1979-06-07 | 1982-05-28 | Daimler Benz Ag | Anti-knock ignition control circuit for IC engine - uses filter circuits and timing monostable to reject disturbances not caused by knocking |
EP0022565A1 (en) * | 1979-07-11 | 1981-01-21 | Creative Tool Company Corp. | Compression rate analyzer |
EP0047394A1 (en) * | 1980-08-14 | 1982-03-17 | Hitachi, Ltd. | Engine knock control apparatus |
EP0146668A2 (en) * | 1980-08-14 | 1985-07-03 | Hitachi, Ltd. | Engine knock control apparatus |
EP0148308A2 (en) * | 1980-08-14 | 1985-07-17 | Hitachi, Ltd. | Engine knock control apparatus |
EP0146668A3 (en) * | 1980-08-14 | 1987-01-21 | Hitachi, Ltd. | Engine knock control apparatus |
EP0148308A3 (en) * | 1980-08-14 | 1987-01-21 | Hitachi, Ltd. | Engine knock control apparatus |
GB2201780B (en) * | 1987-03-04 | 1991-10-09 | Lucas Ind Plc | Knock detection system |
GB2201780A (en) * | 1987-03-04 | 1988-09-07 | Lucas Ind Plc | A noise-cancelling circuit for an ic engine knock-detector |
ES2099667A1 (en) * | 1993-06-26 | 1997-05-16 | Mann & Hummel Filter | Method for determining a noise signal from total noise |
DE19520033A1 (en) * | 1995-05-31 | 1996-12-05 | Bayerische Motoren Werke Ag | Device for generating a synthetic signal for testing knock control functions |
US5665906A (en) * | 1995-05-31 | 1997-09-09 | Bayerische Motoren Werke Ag | Device for generating a synthetic signal for testing knock control functions |
WO2002036304A2 (en) * | 2000-10-24 | 2002-05-10 | Consiglio Nazionale Delle Ricerche | Method and relevant device for the automatic supervision of the degree of wear of the tools employed in the unmanned mechanical working |
WO2002036304A3 (en) * | 2000-10-24 | 2003-03-27 | Consiglio Nazionale Ricerche | Method and relevant device for the automatic supervision of the degree of wear of the tools employed in the unmanned mechanical working |
GB2564694A (en) * | 2017-07-20 | 2019-01-23 | Delphi Automotive Systems Lux | Combustion noise detection in an internal combustion engine |
GB2564694B (en) * | 2017-07-20 | 2020-03-11 | Delphi Automotive Systems Lux | Combustion noise detection in an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
GB2009406B (en) | 1982-04-07 |
DE2852760A1 (en) | 1979-06-28 |
FR2411399A1 (en) | 1979-07-06 |
DE2852760C2 (en) | 1986-08-28 |
FR2411399B1 (en) | 1982-04-09 |
IT1088734B (en) | 1985-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |