JPS576335A - Inspecting and diagnosing device for automobile or the like - Google Patents

Inspecting and diagnosing device for automobile or the like

Info

Publication number
JPS576335A
JPS576335A JP7911380A JP7911380A JPS576335A JP S576335 A JPS576335 A JP S576335A JP 7911380 A JP7911380 A JP 7911380A JP 7911380 A JP7911380 A JP 7911380A JP S576335 A JPS576335 A JP S576335A
Authority
JP
Japan
Prior art keywords
circuit
automobile
wavelength
ratio
knows
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
JP7911380A
Other languages
Japanese (ja)
Inventor
Takeshi Wakabayashi
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7911380A priority Critical patent/JPS576335A/en
Publication of JPS576335A publication Critical patent/JPS576335A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/12—Testing internal-combustion engines by monitoring vibrations

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)

Abstract

PURPOSE:To inspect and diagnose automobiles or the like fully automatically in a short period by detecting the electric noise transmitted from a transmitting source such as the engine of an automobile or the like. CONSTITUTION:The electric noise transmitted from a transmitting source such as the engine of an automobile or the like is received in a receiving part 21, and the waveform of a detection signal is processed by a waveform processing circuit 22, by which only the required signal is extracted. A voltage rate operating circuit 24 extracts the maximum and minimum levels out of a number of voltage pulses outputted by the circuit 22, and operates the ratio thereof. A wavelength ratio operating circuit 25 measures twice the generation time of a number of wavelength pulses outputted by the circuit 22, and operates a time ratio. A voltage rate decision circuit 27 compares the output of the circuit 24 with the storage value of a rate reference value storage part 26 and knows the state of an ignition system. A wavelength rate decision circuit 28 compares the output of the circuit 25 with the storage value of part 26, and knows the presence or absence of uneven revolutions. A control circuit 23 is inputted with the measurement start signal of a foot switch 12, and performs the time measurement of 3-5 seconds.
JP7911380A 1980-06-13 1980-06-13 Inspecting and diagnosing device for automobile or the like Pending JPS576335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7911380A JPS576335A (en) 1980-06-13 1980-06-13 Inspecting and diagnosing device for automobile or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7911380A JPS576335A (en) 1980-06-13 1980-06-13 Inspecting and diagnosing device for automobile or the like

Publications (1)

Publication Number Publication Date
JPS576335A true JPS576335A (en) 1982-01-13

Family

ID=13680844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7911380A Pending JPS576335A (en) 1980-06-13 1980-06-13 Inspecting and diagnosing device for automobile or the like

Country Status (1)

Country Link
JP (1) JPS576335A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58182535A (en) * 1982-04-20 1983-10-25 Mitsubishi Heavy Ind Ltd Automatic diagnosing device of motorcar or the like
JPS60233528A (en) * 1984-05-02 1985-11-20 Tokyo Tatsuno Co Ltd Diagnosing device of automobile engine
FR2577673A1 (en) * 1985-02-15 1986-08-22 Renault Device for acoustic vehicle diagnostics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58182535A (en) * 1982-04-20 1983-10-25 Mitsubishi Heavy Ind Ltd Automatic diagnosing device of motorcar or the like
JPS60233528A (en) * 1984-05-02 1985-11-20 Tokyo Tatsuno Co Ltd Diagnosing device of automobile engine
FR2577673A1 (en) * 1985-02-15 1986-08-22 Renault Device for acoustic vehicle diagnostics

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