IT1088734B - AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT EQUIPMENT - Google Patents

AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT EQUIPMENT

Info

Publication number
IT1088734B
IT1088734B IT30412/77A IT3041277A IT1088734B IT 1088734 B IT1088734 B IT 1088734B IT 30412/77 A IT30412/77 A IT 30412/77A IT 3041277 A IT3041277 A IT 3041277A IT 1088734 B IT1088734 B IT 1088734B
Authority
IT
Italy
Prior art keywords
background noise
noise suppression
measurement equipment
suppression system
automatic background
Prior art date
Application number
IT30412/77A
Other languages
Italian (it)
Inventor
Virgilio Arrigoni
Bruno Gaetani
Fulvio Giavazzi
Original Assignee
Snam Progetti
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 Snam Progetti filed Critical Snam Progetti
Priority to IT30412/77A priority Critical patent/IT1088734B/en
Priority to GB7845661A priority patent/GB2009406B/en
Priority to FR7834271A priority patent/FR2411399A1/en
Priority to DE2852760A priority patent/DE2852760C2/en
Application granted granted Critical
Publication of IT1088734B publication Critical patent/IT1088734B/en

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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)
IT30412/77A 1977-12-06 1977-12-06 AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT EQUIPMENT IT1088734B (en)

Priority Applications (4)

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
GB7845661A GB2009406B (en) 1977-12-06 1978-11-22 Detection of knocking in an engine
FR7834271A FR2411399A1 (en) 1977-12-06 1978-12-05 AUTOMATIC SYSTEM TO REMOVE BACKGROUND NOISE IN AN APPLIANCE FOR MEASURING COGNING IN INTERNAL COMBUSTION ENGINES
DE2852760A DE2852760C2 (en) 1977-12-06 1978-12-06 Device for suppressing background noise when measuring the knock resistance of an internal combustion engine

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 (1)

Publication Number Publication Date
IT1088734B true IT1088734B (en) 1985-06-10

Family

ID=11229715

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30412/77A IT1088734B (en) 1977-12-06 1977-12-06 AUTOMATIC BACKGROUND NOISE SUPPRESSION SYSTEM ON HEAD BEAT MEASUREMENT EQUIPMENT

Country Status (4)

Country Link
DE (1) DE2852760C2 (en)
FR (1) FR2411399A1 (en)
GB (1) GB2009406B (en)
IT (1) IT1088734B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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
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
US4292841A (en) * 1979-07-11 1981-10-06 Creative Tool Company Compression rate analyzer
DE2942250A1 (en) * 1979-10-19 1981-05-07 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR DETECTING THE VIBRATIONS WHEN TAPPING AN INTERNAL COMBUSTION ENGINE
JPS5738667A (en) * 1980-08-14 1982-03-03 Hitachi Ltd Knock controller
DE3177108D1 (en) * 1980-08-14 1989-11-02 Hitachi Ltd Engine knock control apparatus
GB8705023D0 (en) * 1987-03-04 1987-04-08 Lucas Elect Electron Syst Knock detection system
DE4321352C2 (en) * 1993-06-26 2001-09-13 Mann & Hummel Filter Method for determining a noise signal from a total noise for noise attenuation
DE19520033A1 (en) * 1995-05-31 1996-12-05 Bayerische Motoren Werke Ag Device for generating a synthetic signal for testing knock control functions
IT1315994B1 (en) * 2000-10-24 2003-03-26 Consiglio Nazionale Ricerche PROCEDURE AND RELATED DEVICE FOR AUTOMATIC SUPERVISION OF THE WEAR DEGREE OF THE TOOLS USED IN MECHANICAL PROCESSING
GB2564694B (en) * 2017-07-20 2020-03-11 Delphi Automotive Systems Lux Combustion noise detection in an internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE2852760A1 (en) 1979-06-28
FR2411399A1 (en) 1979-07-06
GB2009406A (en) 1979-06-13
GB2009406B (en) 1982-04-07
FR2411399B1 (en) 1982-04-09
DE2852760C2 (en) 1986-08-28

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