JPS5754818A - Detector for knocking in internal combustion engine - Google Patents

Detector for knocking in internal combustion engine

Info

Publication number
JPS5754818A
JPS5754818A JP13096580A JP13096580A JPS5754818A JP S5754818 A JPS5754818 A JP S5754818A JP 13096580 A JP13096580 A JP 13096580A JP 13096580 A JP13096580 A JP 13096580A JP S5754818 A JPS5754818 A JP S5754818A
Authority
JP
Japan
Prior art keywords
vibrating
knocking
vibration
changing
detector
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
JP13096580A
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 JP13096580A priority Critical patent/JPS5754818A/en
Priority to US06/235,986 priority patent/US4414840A/en
Publication of JPS5754818A publication Critical patent/JPS5754818A/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 facilitate adjustment of a resonance frequency, by means of a frame in which beltlike convexities and concavities are formed at a part of or a full circumference of a vibrating part. CONSTITUTION:A detector is placed at a cylinder block by means of a screw part 21a, and a knocking vibration is transferred to a vibration object 22 via a housing 21. Only a driving-in part 21c of the vibrating object 22 is secured, and the vibrating object 22 vibrates in a manner to add a natural vibration of a vibrating part 22a itsel thereto. Meanwhile, magnetic paths 23, 24, a coil 27, and a magnet 25 are monolithically and firmly united with the housing 21, whereby only the vibration part 22a vibrates relatively corresponding to a knocking vibration, and a distance of a gap G changes. This causes changing of the number of magnetic fluxes in the magnetic paths. The change in the magnetic flux is detected as a voltage by means of the coil 27, and is outputted to a knocking circuit 3 via a lead of a connector 29. The resonance frequency of the vibrating object 22 is set within a knocking frequency band by equivalently changing the radius of the vibrating part 22a through the changing of a diameter of a frame part 22b produced resulting from the formation of a beltlike convex and concave part on the vibrating part 22a.
JP13096580A 1980-02-22 1980-09-19 Detector for knocking in internal combustion engine Pending JPS5754818A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13096580A JPS5754818A (en) 1980-09-19 1980-09-19 Detector for knocking in 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
JP13096580A JPS5754818A (en) 1980-09-19 1980-09-19 Detector for knocking in internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5754818A true JPS5754818A (en) 1982-04-01

Family

ID=15046756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13096580A Pending JPS5754818A (en) 1980-02-22 1980-09-19 Detector for knocking in internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5754818A (en)

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