JPS56147037A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS56147037A
JPS56147037A JP5091480A JP5091480A JPS56147037A JP S56147037 A JPS56147037 A JP S56147037A JP 5091480 A JP5091480 A JP 5091480A JP 5091480 A JP5091480 A JP 5091480A JP S56147037 A JPS56147037 A JP S56147037A
Authority
JP
Japan
Prior art keywords
revolutions
engine
reference voltage
signal
circuit
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.)
Granted
Application number
JP5091480A
Other languages
Japanese (ja)
Other versions
JPS6229012B2 (en
Inventor
Shuichi Toki
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 Unisia Automotive Ltd
Original Assignee
Japan Electronic Control Systems Co 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 Japan Electronic Control Systems Co Ltd filed Critical Japan Electronic Control Systems Co Ltd
Priority to JP5091480A priority Critical patent/JPS56147037A/en
Publication of JPS56147037A publication Critical patent/JPS56147037A/en
Publication of JPS6229012B2 publication Critical patent/JPS6229012B2/ja
Granted 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
    • G01L23/225—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 circuit arrangements therefor

Abstract

PURPOSE:To permit detection irrespectively of the number of revolutions by changing the pulse width of the reference voltage correcting signal generated according to knocking signal by the number of revolutions of the engine. CONSTITUTION:The output of a vibration sensor 1 is removed of noise components by a filter 2, and only the engine vibration signal is supplied via an amplifier 3 to a comparator 6. On the other hand, the output of a reference voltage generating circuit 4 to which the correction signal from a reference voltage correcting circuit 7 is being applied is supplied via an amplifier 5 to the comparator 6. Here, the circuit 7 changes the pulse width of the correction signal generated according to the knocking signal detected by the comparator 6 by means of the number of revolutions of the engine. Hence, despite the increase in the number of revolutions of the engine, the drop in the reference voltage from the circuit 4 does not occur. In this way, the knocking signal is detected irrespectively of the number of revolutions of the engine.
JP5091480A 1980-04-17 1980-04-17 Knocking detector for internal combustion engine Granted JPS56147037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5091480A JPS56147037A (en) 1980-04-17 1980-04-17 Knocking detector for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5091480A JPS56147037A (en) 1980-04-17 1980-04-17 Knocking detector for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS56147037A true JPS56147037A (en) 1981-11-14
JPS6229012B2 JPS6229012B2 (en) 1987-06-24

Family

ID=12872040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5091480A Granted JPS56147037A (en) 1980-04-17 1980-04-17 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS56147037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10260202A (en) * 1997-03-19 1998-09-29 Tokai Rika Co Ltd G switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0429715U (en) * 1990-07-02 1992-03-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10260202A (en) * 1997-03-19 1998-09-29 Tokai Rika Co Ltd G switch

Also Published As

Publication number Publication date
JPS6229012B2 (en) 1987-06-24

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