JPS56141533A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS56141533A
JPS56141533A JP4415080A JP4415080A JPS56141533A JP S56141533 A JPS56141533 A JP S56141533A JP 4415080 A JP4415080 A JP 4415080A JP 4415080 A JP4415080 A JP 4415080A JP S56141533 A JPS56141533 A JP S56141533A
Authority
JP
Japan
Prior art keywords
capacitor
voltage
signal
engine
potential
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
JP4415080A
Other languages
Japanese (ja)
Other versions
JPS6229011B2 (en
Inventor
Shuichi Toki
Takayuki Hosobuchi
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 JP4415080A priority Critical patent/JPS56141533A/en
Publication of JPS56141533A publication Critical patent/JPS56141533A/en
Publication of JPS6229011B2 publication Critical patent/JPS6229011B2/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 eliminate malfunction by having a comparing means which generates a knocking signal when the level of an engine vibration signal exceeds a reference voltage. CONSTITUTION:Prior to starting of an engine, no engine vibration signals exist and therefore, the potential of a capacitor C generating the reference signal of a reference voltage generating circuit 4 is at a low level. When a motor start switch MST is turned on, the voltage of a battery BT flows as a correction signal to the capacitor C via a diode D and a resistance R4, then the potential of the capacitor C reaches a prescribed value. On starting of the engine, the motor switch MST is returned to the off-state and therefore the generation of the correction signal stops. In the circuit 4, the engine vibration signal is inputted and the voltage having undergone half-wave rectifying, dividing and voltage following is applied via the resistance R3 to the capacitor C. Since the potential of the capacitor C has already the prescribed value, it immediately follows up the voltage corresponding to the average level of the engine vibration signal.
JP4415080A 1980-04-04 1980-04-04 Knocking detector for internal combustion engine Granted JPS56141533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4415080A JPS56141533A (en) 1980-04-04 1980-04-04 Knocking detector for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4415080A JPS56141533A (en) 1980-04-04 1980-04-04 Knocking detector for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS56141533A true JPS56141533A (en) 1981-11-05
JPS6229011B2 JPS6229011B2 (en) 1987-06-24

Family

ID=12683594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4415080A Granted JPS56141533A (en) 1980-04-04 1980-04-04 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS56141533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169653A (en) * 1984-01-20 1985-09-03 フイアツト　オート　ソチエタ　ペル　アチオニ Functional amount correction apparatus in internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169653A (en) * 1984-01-20 1985-09-03 フイアツト　オート　ソチエタ　ペル　アチオニ Functional amount correction apparatus in internal combustion engine

Also Published As

Publication number Publication date
JPS6229011B2 (en) 1987-06-24

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