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JPS56155858A - Detector for number of revolutions of internal combustion engine - Google Patents

Detector for number of revolutions of internal combustion engine

Info

Publication number
JPS56155858A
JPS56155858A JP6029980A JP6029980A JPS56155858A JP S56155858 A JPS56155858 A JP S56155858A JP 6029980 A JP6029980 A JP 6029980A JP 6029980 A JP6029980 A JP 6029980A JP S56155858 A JPS56155858 A JP S56155858A
Authority
JP
Japan
Prior art keywords
revolutions
combustion engine
internal combustion
detector
radio waves
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
JP6029980A
Other languages
Japanese (ja)
Inventor
Kiyoshi Yabunaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6029980A priority Critical patent/JPS56155858A/en
Publication of JPS56155858A publication Critical patent/JPS56155858A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • G01P3/4807—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general by using circuits for the detection of the pulses delivered by the ignition system of an internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P2017/003—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using an inductive sensor, e.g. trigger tongs

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PURPOSE:To surely detect the number of revolutions of an internal combustion engine by receiving the radio waves radiated from an ignition device and generating the constant time pulses corresponding to rotating speeds. CONSTITUTION:The noise radio waves radiated from an ignition device are band- selected in a resonance circuit 11 via an antenna 10, is frequency-converted 12 and is applied to a detecting circuit 13. The modulated waveform obtained through detection is pulse-shaped with a filter 15, and operates a Schmitt circuit 16, the output thereof triggers a monostable multivibrator 17. Thereby, constant time pulses are obtained in a terminal 18.
JP6029980A 1980-05-07 1980-05-07 Detector for number of revolutions of internal combustion engine Pending JPS56155858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6029980A JPS56155858A (en) 1980-05-07 1980-05-07 Detector for number of revolutions of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6029980A JPS56155858A (en) 1980-05-07 1980-05-07 Detector for number of revolutions of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS56155858A true JPS56155858A (en) 1981-12-02

Family

ID=13138145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6029980A Pending JPS56155858A (en) 1980-05-07 1980-05-07 Detector for number of revolutions of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS56155858A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115368A (en) * 1981-12-29 1983-07-09 Kioritz Corp Wristwatch type revolution indicator
JPS5916701A (en) * 1982-07-20 1984-01-27 追浜工業株式会社 Annunciator for state of operation of portable chain saw
JPS60124645U (en) * 1984-01-26 1985-08-22 ワンダー精器株式会社 document cutting machine
JPS60161861U (en) * 1984-04-03 1985-10-28 追浜工業株式会社 engine tachometer
JPS6114376U (en) * 1984-06-29 1986-01-28 追浜工業株式会社 engine tachometer
JPS6115566U (en) * 1984-07-03 1986-01-29 追浜工業株式会社 engine tachometer
JPS6148365U (en) * 1984-09-04 1986-04-01
US4587838A (en) * 1984-05-15 1986-05-13 Mitsubishi Jukogyo Kabushiki Kaisha Automatic examination system for motor vehicles
EP0439996A2 (en) * 1989-12-18 1991-08-07 Environmental Systems Products, Inc. Non-intrusive tachometer for spark ignition autos
WO2007113917A1 (en) * 2006-04-06 2007-10-11 Oppama Industry Co., Ltd. Engine rotating meter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115368A (en) * 1981-12-29 1983-07-09 Kioritz Corp Wristwatch type revolution indicator
JPS5916701A (en) * 1982-07-20 1984-01-27 追浜工業株式会社 Annunciator for state of operation of portable chain saw
JPS60124645U (en) * 1984-01-26 1985-08-22 ワンダー精器株式会社 document cutting machine
JPS6221328Y2 (en) * 1984-01-26 1987-05-29
JPS60161861U (en) * 1984-04-03 1985-10-28 追浜工業株式会社 engine tachometer
US4587838A (en) * 1984-05-15 1986-05-13 Mitsubishi Jukogyo Kabushiki Kaisha Automatic examination system for motor vehicles
JPS6114376U (en) * 1984-06-29 1986-01-28 追浜工業株式会社 engine tachometer
JPS6115566U (en) * 1984-07-03 1986-01-29 追浜工業株式会社 engine tachometer
JPS6148365U (en) * 1984-09-04 1986-04-01
EP0439996A2 (en) * 1989-12-18 1991-08-07 Environmental Systems Products, Inc. Non-intrusive tachometer for spark ignition autos
WO2007113917A1 (en) * 2006-04-06 2007-10-11 Oppama Industry Co., Ltd. Engine rotating meter
US7913547B2 (en) 2006-04-06 2011-03-29 Oppama Industry Co., Ltd. Engine rotating meter

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