JPS55132927A - Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine - Google Patents

Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine

Info

Publication number
JPS55132927A
JPS55132927A JP4077979A JP4077979A JPS55132927A JP S55132927 A JPS55132927 A JP S55132927A JP 4077979 A JP4077979 A JP 4077979A JP 4077979 A JP4077979 A JP 4077979A JP S55132927 A JPS55132927 A JP S55132927A
Authority
JP
Japan
Prior art keywords
compression pressure
circuit means
combustion engine
internal combustion
pressure fluctuation
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
JP4077979A
Other languages
Japanese (ja)
Other versions
JPS6310372B2 (en
Inventor
Takayuki Kato
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.)
Toyota Motor Corp
Toyota Motor Sales Co Ltd
Toyota Central R&D Labs Inc
Original Assignee
Toyota Motor Corp
Toyota Motor Sales Co Ltd
Toyota Central R&D Labs Inc
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 Toyota Motor Corp, Toyota Motor Sales Co Ltd, Toyota Central R&D Labs Inc filed Critical Toyota Motor Corp
Priority to JP4077979A priority Critical patent/JPS55132927A/en
Publication of JPS55132927A publication Critical patent/JPS55132927A/en
Publication of JPS6310372B2 publication Critical patent/JPS6310372B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measuring Fluid Pressure (AREA)
  • Testing Of Engines (AREA)

Abstract

PURPOSE: To simplify measurememt by detecting the relative changes of the compression pressure of an internal combustion engine from the periodic change amounts of starter current.
CONSTITUTION: A convertion circuit means II, arithmetic circuit means II and display means IV are subsequently connected to a current detecting means I. As a result of this, the starter current detected by the current detecting means I or the signal corresponding to this is converted to a pulse signal by the conversion circuit means II, after which the period of the AC components corresponding to its increase direction is converted to the DC voltage signal proportional to this. Thence, the output of the conversion circuit means II is compared by the arithmetic circuit means III, by which the change amount thereof is operated and the calculated relative change amount of compression pressure is displayed in the display means IV.
COPYRIGHT: (C)1980,JPO&Japio
JP4077979A 1979-04-03 1979-04-03 Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine Granted JPS55132927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4077979A JPS55132927A (en) 1979-04-03 1979-04-03 Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4077979A JPS55132927A (en) 1979-04-03 1979-04-03 Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine

Publications (2)

Publication Number Publication Date
JPS55132927A true JPS55132927A (en) 1980-10-16
JPS6310372B2 JPS6310372B2 (en) 1988-03-07

Family

ID=12590105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4077979A Granted JPS55132927A (en) 1979-04-03 1979-04-03 Method and apparatus for measuring compression pressure fluctuation of multicylinder internal combustion engine

Country Status (1)

Country Link
JP (1) JPS55132927A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348105A (en) * 1976-10-12 1978-05-01 Maabin Satsutofuin Jiyu Erudon Method of testing compression force of engine by wave form of starter motor current
JPS53107509A (en) * 1977-03-02 1978-09-19 Siemens Ag Measuring system of proportional value to pressure in internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348105A (en) * 1976-10-12 1978-05-01 Maabin Satsutofuin Jiyu Erudon Method of testing compression force of engine by wave form of starter motor current
JPS53107509A (en) * 1977-03-02 1978-09-19 Siemens Ag Measuring system of proportional value to pressure in internal combustion engine

Also Published As

Publication number Publication date
JPS6310372B2 (en) 1988-03-07

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