JPS56118626A - Knocking detector for internal combustion-engine - Google Patents

Knocking detector for internal combustion-engine

Info

Publication number
JPS56118626A
JPS56118626A JP2177080A JP2177080A JPS56118626A JP S56118626 A JPS56118626 A JP S56118626A JP 2177080 A JP2177080 A JP 2177080A JP 2177080 A JP2177080 A JP 2177080A JP S56118626 A JPS56118626 A JP S56118626A
Authority
JP
Japan
Prior art keywords
vibrator
knocking
magnetic path
engine
vibration
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
JP2177080A
Other languages
Japanese (ja)
Inventor
Kimiaki Yamaguchi
Tadashi Hattori
Yoshinori Otsuka
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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 Nippon Soken Inc filed Critical Nippon Soken Inc
Priority to JP2177080A priority Critical patent/JPS56118626A/en
Priority to US06/235,986 priority patent/US4414840A/en
Publication of JPS56118626A publication Critical patent/JPS56118626A/en
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
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element
    • 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
    • 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
    • G01L23/223—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 magnetic or magnetostrictive means

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)

Abstract

PURPOSE:To permit detection of even feeble knocking by providing a vibration- electricity converting means which generates the electric output corresponding to the vibration of a disc-shaped vibrator having a resonance frequency within the knocking frequency band. CONSTITUTION:A sensor 2 is firmly mounted to the engine block portion through the screw portion 22b. The engine vibration caused by knocking is transmitted through a housing 22 and the inner magnetic path 23 to a vibrator 21, and the vibrating portion 21a thereof vibrates. The vibrating portion 21a faces to the end of the center magnetic path portion 26 through an air gap of the order of 0.1-0.2mm.. In the magnetic circuit, the magnetic flux is passed through in the order of the N pole of a magnet 25, the center magnetic path portion 26, the air gap, the vibrator 21, a spacer 27, the inner magnetic path 23 and the S pole of the magnet 25. When the vibrating portion 21a of the vibrator 21 bivrates, the magnetic flux the magnetic circuit varies, causing a voltage to be induced in a detecting coil 24, and the signal therefrom is drawn out to the outside through lead wires 29 and a connector 30.
JP2177080A 1980-02-22 1980-02-22 Knocking detector for internal combustion-engine Pending JPS56118626A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2177080A JPS56118626A (en) 1980-02-22 1980-02-22 Knocking detector for internal combustion-engine
US06/235,986 US4414840A (en) 1980-02-22 1981-02-19 Knock detecting apparatus for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2177080A JPS56118626A (en) 1980-02-22 1980-02-22 Knocking detector for internal combustion-engine

Publications (1)

Publication Number Publication Date
JPS56118626A true JPS56118626A (en) 1981-09-17

Family

ID=12064304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2177080A Pending JPS56118626A (en) 1980-02-22 1980-02-22 Knocking detector for internal combustion-engine

Country Status (1)

Country Link
JP (1) JPS56118626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893830U (en) * 1981-12-19 1983-06-25 日本セラミツク株式会社 Resonant vibration sensor
JPS58132830U (en) * 1982-03-03 1983-09-07 松下電器産業株式会社 vibration detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893830U (en) * 1981-12-19 1983-06-25 日本セラミツク株式会社 Resonant vibration sensor
JPS58132830U (en) * 1982-03-03 1983-09-07 松下電器産業株式会社 vibration detector

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