JPS56148034A - Knock controller - Google Patents

Knock controller

Info

Publication number
JPS56148034A
JPS56148034A JP5214380A JP5214380A JPS56148034A JP S56148034 A JPS56148034 A JP S56148034A JP 5214380 A JP5214380 A JP 5214380A JP 5214380 A JP5214380 A JP 5214380A JP S56148034 A JPS56148034 A JP S56148034A
Authority
JP
Japan
Prior art keywords
knocking
signal level
engine speed
noise
noise signal
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
JP5214380A
Other languages
Japanese (ja)
Other versions
JPH0227614B2 (en
Inventor
Ichiro Maki
Tadayoshi Makino
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5214380A priority Critical patent/JPS56148034A/en
Publication of JPS56148034A publication Critical patent/JPS56148034A/en
Publication of JPH0227614B2 publication Critical patent/JPH0227614B2/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)
  • Measuring Fluid Pressure (AREA)
  • Testing Of Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

PURPOSE:To improve the knocking detection accuracy by controlling the gain of an amplifier circuit according to the engine speed so that the ratio of the knocking signal level to the noise signal level is kept constant. CONSTITUTION:The output of a vibration pickup 1 is amplified by selective amplifiers 2 and 3, gated by gate circuits 5 and 6 to divide into a knocking signal and a noise signal, peak-held by peak-hold circuits 7 and 8 and sent to a comparator 9 to detect knocking. Whether there is knocking or not is decided from the level difference between the knocking gate output and the noise gate output. The ratio of the knocking signal level to the noise signal level, which varies with the engine speed, is controlled so as to be a given constant value by means of a gain controlling circuit 4 by varying the amplification degree of the selective amplifier 3 with the engine speed.
JP5214380A 1980-04-18 1980-04-18 Knock controller Granted JPS56148034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5214380A JPS56148034A (en) 1980-04-18 1980-04-18 Knock controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5214380A JPS56148034A (en) 1980-04-18 1980-04-18 Knock controller

Publications (2)

Publication Number Publication Date
JPS56148034A true JPS56148034A (en) 1981-11-17
JPH0227614B2 JPH0227614B2 (en) 1990-06-19

Family

ID=12906645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5214380A Granted JPS56148034A (en) 1980-04-18 1980-04-18 Knock controller

Country Status (1)

Country Link
JP (1) JPS56148034A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225340A (en) * 1982-06-25 1983-12-27 Nec Corp Circuit for treating knocking signal
JPS59164939A (en) * 1983-03-10 1984-09-18 Tohoku Metal Ind Ltd Knocking signal processing circuit
JPS6033026A (en) * 1983-08-04 1985-02-20 Toyota Motor Corp Method and device for detecting knocking of internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136042A (en) * 1975-05-20 1976-11-25 Nissan Motor Co Ltd Internal combustion engine nocking automatic pursuit device
JPS5415970A (en) * 1977-07-06 1979-02-06 Kubota Ltd Production of patterned product of molded plastic
JPS54103911A (en) * 1978-02-01 1979-08-15 Nippon Denso Co Ltd Knock detector and ignition time controller for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136042A (en) * 1975-05-20 1976-11-25 Nissan Motor Co Ltd Internal combustion engine nocking automatic pursuit device
JPS5415970A (en) * 1977-07-06 1979-02-06 Kubota Ltd Production of patterned product of molded plastic
JPS54103911A (en) * 1978-02-01 1979-08-15 Nippon Denso Co Ltd Knock detector and ignition time controller for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225340A (en) * 1982-06-25 1983-12-27 Nec Corp Circuit for treating knocking signal
JPS59164939A (en) * 1983-03-10 1984-09-18 Tohoku Metal Ind Ltd Knocking signal processing circuit
JPS6033026A (en) * 1983-08-04 1985-02-20 Toyota Motor Corp Method and device for detecting knocking of internal combustion engine
JPH0326779B2 (en) * 1983-08-04 1991-04-11 Toyota Jidosha Kk

Also Published As

Publication number Publication date
JPH0227614B2 (en) 1990-06-19

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