JPS57182128A - Piezo-electric type knocking sensor for internal combustion engine - Google Patents

Piezo-electric type knocking sensor for internal combustion engine

Info

Publication number
JPS57182128A
JPS57182128A JP6695181A JP6695181A JPS57182128A JP S57182128 A JPS57182128 A JP S57182128A JP 6695181 A JP6695181 A JP 6695181A JP 6695181 A JP6695181 A JP 6695181A JP S57182128 A JPS57182128 A JP S57182128A
Authority
JP
Japan
Prior art keywords
piezo
electric element
thick section
screw holes
weight
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.)
Pending
Application number
JP6695181A
Other languages
English (en)
Inventor
Masamitsu Asakura
Chiaki Araida
Kinsaku Yamada
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6695181A priority Critical patent/JPS57182128A/ja
Publication of JPS57182128A publication Critical patent/JPS57182128A/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
JP6695181A 1981-05-06 1981-05-06 Piezo-electric type knocking sensor for internal combustion engine Pending JPS57182128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6695181A JPS57182128A (en) 1981-05-06 1981-05-06 Piezo-electric type knocking sensor for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6695181A JPS57182128A (en) 1981-05-06 1981-05-06 Piezo-electric type knocking sensor for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57182128A true JPS57182128A (en) 1982-11-09

Family

ID=13330827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6695181A Pending JPS57182128A (en) 1981-05-06 1981-05-06 Piezo-electric type knocking sensor for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57182128A (ja)

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