JPS57160040A - Knocking detecting device for internal combustion engine - Google Patents

Knocking detecting device for internal combustion engine

Info

Publication number
JPS57160040A
JPS57160040A JP4527681A JP4527681A JPS57160040A JP S57160040 A JPS57160040 A JP S57160040A JP 4527681 A JP4527681 A JP 4527681A JP 4527681 A JP4527681 A JP 4527681A JP S57160040 A JPS57160040 A JP S57160040A
Authority
JP
Japan
Prior art keywords
combustion engine
internal combustion
knocking
detecting device
vibration element
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
JP4527681A
Other languages
Japanese (ja)
Inventor
Yukio Saito
Shinichi Hayashizaki
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.)
SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
SENDAI SEIMITSU ZAIRYO KENKYUS
Seiko Electronic Components Ltd
Original Assignee
SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
SENDAI SEIMITSU ZAIRYO KENKYUS
Seiko Electronic Components 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 SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK, SENDAI SEIMITSU ZAIRYO KENKYUS, Seiko Electronic Components Ltd filed Critical SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
Priority to JP4527681A priority Critical patent/JPS57160040A/en
Publication of JPS57160040A publication Critical patent/JPS57160040A/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
    • 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

Abstract

PURPOSE:To eliminate the necessity to install a band pass filter for the electric circuit that follows a knocking detecting device and reduce the cost of the electric circuit by using a tuning fork vibration element that opens at its one end in a case that vibrates as one body with the main body of an internal combustion engine and is attached to it. CONSTITUTION:The case 1 of a knocking detecting device is made to vibrate as one body with the internal combustion engine by means of screw section 1a, and a V-letter shaped tuning fork vibration element 2 is secured on the lid 4 of the case by bolting or welding or other method. This tuning fork has its intrinsic frequency that is the same as the frequency of knocking. Accordingly only vibrations that have frequencies near the frequency of knocking of the internal combustion engine are detected as large electric output from the vibration element 2, which makes unnecessary the band-pass filter in the electric circuit that follows the vibration element, making this circuit simple and lowering its cost.
JP4527681A 1981-03-27 1981-03-27 Knocking detecting device for internal combustion engine Pending JPS57160040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4527681A JPS57160040A (en) 1981-03-27 1981-03-27 Knocking detecting device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4527681A JPS57160040A (en) 1981-03-27 1981-03-27 Knocking detecting device for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57160040A true JPS57160040A (en) 1982-10-02

Family

ID=12714784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4527681A Pending JPS57160040A (en) 1981-03-27 1981-03-27 Knocking detecting device for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57160040A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5612517A (en) * 1979-07-13 1981-02-06 Seiko Instr & Electronics Ltd Piezoelectric vibrator sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5612517A (en) * 1979-07-13 1981-02-06 Seiko Instr & Electronics Ltd Piezoelectric vibrator sensor

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