FR2447023B3 - - Google Patents

Info

Publication number
FR2447023B3
FR2447023B3 FR7926683A FR7926683A FR2447023B3 FR 2447023 B3 FR2447023 B3 FR 2447023B3 FR 7926683 A FR7926683 A FR 7926683A FR 7926683 A FR7926683 A FR 7926683A FR 2447023 B3 FR2447023 B3 FR 2447023B3
Authority
FR
France
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.)
Expired
Application number
FR7926683A
Other versions
FR2447023A1 (fr
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2447023A1 publication Critical patent/FR2447023A1/fr
Application granted granted Critical
Publication of FR2447023B3 publication Critical patent/FR2447023B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • 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
    • G01L23/222—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 using piezoelectric devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
FR7926683A 1979-01-22 1979-10-26 Organe palpeur pour detecter des vibrations de cliquetis dans un moteur a combustion interne Granted FR2447023A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792902305 DE2902305A1 (de) 1979-01-22 1979-01-22 Sensor zur erfassung von klopfschwingungen

Publications (2)

Publication Number Publication Date
FR2447023A1 FR2447023A1 (fr) 1980-08-14
FR2447023B3 true FR2447023B3 (fr) 1982-07-30

Family

ID=6061107

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926683A Granted FR2447023A1 (fr) 1979-01-22 1979-10-26 Organe palpeur pour detecter des vibrations de cliquetis dans un moteur a combustion interne

Country Status (5)

Country Link
JP (1) JPS5599042A (fr)
DE (1) DE2902305A1 (fr)
FR (1) FR2447023A1 (fr)
GB (1) GB2041698A (fr)
IT (1) IT1130868B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4374472A (en) * 1979-09-29 1983-02-22 Nissan Motor Co., Ltd. Vibration sensor
JPS57120825A (en) * 1981-01-21 1982-07-28 Hitachi Ltd Sensor for knocking
JPS59141028A (ja) * 1983-01-31 1984-08-13 Nissan Motor Co Ltd 座金型圧力センサ
DE3333285A1 (de) * 1983-09-15 1985-04-18 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum erfassen von kraeften, spannungen bzw. beschleunigungen an maschinen, geraeten oder dgl.
DE3445452A1 (de) * 1984-12-13 1986-06-19 Robert Bosch Gmbh, 7000 Stuttgart Klopfsensor
JP3809919B2 (ja) * 1995-06-09 2006-08-16 株式会社日立製作所 シリンダ内圧検出装置
FR2762646B1 (fr) * 1997-04-29 1999-07-02 Siemens Automotive Sa Capteur de cliquetis pour un vehicule automobile
DE102010042263A1 (de) * 2010-10-11 2012-04-12 Hilti Aktiengesellschaft Sensoranordnung, beispielsweise an einem Ankerbolzen
CN105605078B (zh) * 2016-03-11 2018-07-13 大连理工大学 一种用于监测螺栓连接界面的智能垫片装置
CN106402124B (zh) * 2016-09-29 2018-11-09 大连理工大学 一种用于监测螺栓连接动态受力状况的智能螺栓装置
CN106286550A (zh) * 2016-09-29 2017-01-04 大连理工大学 一种用于监测螺栓连接状况的智能螺母装置
CN107355464A (zh) * 2017-07-18 2017-11-17 大连理工大学 一种用于监测螺栓松动的堆栈式压电陶瓷智能垫片
CN110388370A (zh) * 2018-04-20 2019-10-29 关隆股份有限公司 精密螺帽
CN112403874A (zh) * 2020-12-01 2021-02-26 蔡云龙 一种复合绝缘型超声波振子及其应用

Also Published As

Publication number Publication date
FR2447023A1 (fr) 1980-08-14
DE2902305A1 (de) 1980-08-07
GB2041698A (en) 1980-09-10
JPS5599042A (en) 1980-07-28
IT8019339A0 (it) 1980-01-21
IT1130868B (it) 1986-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse