JPS5740617A - Knocking detection circuit for internal combustion engine - Google Patents

Knocking detection circuit for internal combustion engine

Info

Publication number
JPS5740617A
JPS5740617A JP11723180A JP11723180A JPS5740617A JP S5740617 A JPS5740617 A JP S5740617A JP 11723180 A JP11723180 A JP 11723180A JP 11723180 A JP11723180 A JP 11723180A JP S5740617 A JPS5740617 A JP S5740617A
Authority
JP
Japan
Prior art keywords
knocking
output
spark
cylinder
monostable multivibrator
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
JP11723180A
Other languages
Japanese (ja)
Other versions
JPS6352690B2 (en
Inventor
Sadao Ichikawa
Hideo Sofue
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.)
Nippon Tokushu Togyo KK
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nippon Tokushu Togyo KK
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 NGK Spark Plug Co Ltd, Nippon Tokushu Togyo KK filed Critical NGK Spark Plug Co Ltd
Priority to JP11723180A priority Critical patent/JPS5740617A/en
Publication of JPS5740617A publication Critical patent/JPS5740617A/en
Publication of JPS6352690B2 publication Critical patent/JPS6352690B2/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To enable accurate identification of cylinders generating knocking and a knocking level by detecting spark signals of an ignition plug mounted to the cylinder for measuring knocking from those of the ignition plugs. CONSTITUTION:A knock sensor 1 converts the vibration of an engine into a voltage waveform as shown by A. A comparator 2 inputs the output of the knock sensor 1 through a filter 2 and outputs a knocking pulse as shown by B when it exceeds the set reference voltage. A monostable multivibrator 5 detects a spark signal of an ignition plug P4 from a cylinder for measuring knocking from spark signals of ignition plugs P1-P4 as shown by C and output spark discharge pulses as shown by D. An AND circuit 6 inputs the output of the monostable multivibrator 5 and a comparator 3 and generates an output pulse as shown by E. The output pulse is produced when a knocking occurs in a measuring cylinder. It is amplified to a level perceivable to a person as shown by F with a monostable multivibrator 7 to flash a lamp 9.
JP11723180A 1980-08-25 1980-08-25 Knocking detection circuit for internal combustion engine Granted JPS5740617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11723180A JPS5740617A (en) 1980-08-25 1980-08-25 Knocking detection circuit for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11723180A JPS5740617A (en) 1980-08-25 1980-08-25 Knocking detection circuit for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5740617A true JPS5740617A (en) 1982-03-06
JPS6352690B2 JPS6352690B2 (en) 1988-10-19

Family

ID=14706625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11723180A Granted JPS5740617A (en) 1980-08-25 1980-08-25 Knocking detection circuit for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5740617A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126050U (en) * 1981-01-30 1982-08-06
CN112880968A (en) * 2021-01-15 2021-06-01 哈尔滨工程大学 Experimental device for many spark bubbles research in shear flow

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314208A (en) * 1976-07-23 1978-02-08 Rion Co Knocking detecting apparatus
JPS5593028A (en) * 1979-01-05 1980-07-15 Matsushita Electric Ind Co Ltd Knocking detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314208A (en) * 1976-07-23 1978-02-08 Rion Co Knocking detecting apparatus
JPS5593028A (en) * 1979-01-05 1980-07-15 Matsushita Electric Ind Co Ltd Knocking detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126050U (en) * 1981-01-30 1982-08-06
CN112880968A (en) * 2021-01-15 2021-06-01 哈尔滨工程大学 Experimental device for many spark bubbles research in shear flow
CN112880968B (en) * 2021-01-15 2022-11-01 哈尔滨工程大学 Experimental device for research on multi-spark bubbles in shear flow

Also Published As

Publication number Publication date
JPS6352690B2 (en) 1988-10-19

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