JPS5757235A - Measuring method for friction torque of engine - Google Patents

Measuring method for friction torque of engine

Info

Publication number
JPS5757235A
JPS5757235A JP13267780A JP13267780A JPS5757235A JP S5757235 A JPS5757235 A JP S5757235A JP 13267780 A JP13267780 A JP 13267780A JP 13267780 A JP13267780 A JP 13267780A JP S5757235 A JPS5757235 A JP S5757235A
Authority
JP
Japan
Prior art keywords
engine
crank angle
friction torque
cylinders
cylinder
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
JP13267780A
Other languages
Japanese (ja)
Other versions
JPS6410768B2 (en
Inventor
Toshiaki Motoi
Shinobu Ishiyama
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
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP13267780A priority Critical patent/JPS5757235A/en
Publication of JPS5757235A publication Critical patent/JPS5757235A/en
Publication of JPS6410768B2 publication Critical patent/JPS6410768B2/ja
Granted 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
    • G01M15/08—Testing internal-combustion engines by monitoring pressure in cylinders

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 measure with high accuracy a change in the crank angle of friction torque, by detecting in a time series pressure in a cylinder and the speed of revolution of an engine at every prescribed crank angle. CONSTITUTION:The output of a pressure sensor 12 that is arranged in each cylinder of an engine 10 and detects pressure Pz (z represents the number of cylinders) in each cylinder is converted to a signal suitable for arithmetic processing using a signal converter 14. The output of a crank angle sensor 16 provided on the tip of a crank shaft 10a is counted alternately by use of two counters 18, 20 and outputted. As to the output from the converter 14 and the outputs from the counters 18, 20, changes of the crank angle of friction torque Tf at no-load running of the engine are estimated by means of an arithmetic processing device 22, and then they are printed on a printer 24. That is, pressures P1-Pm in the cylinders of all cylinders and the speed w of revolution of the engine at respective crank angles theta are detected simultaneously in a time series, and friction torque Tf at every crank angle theta is calculated.
JP13267780A 1980-09-24 1980-09-24 Measuring method for friction torque of engine Granted JPS5757235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13267780A JPS5757235A (en) 1980-09-24 1980-09-24 Measuring method for friction torque of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13267780A JPS5757235A (en) 1980-09-24 1980-09-24 Measuring method for friction torque of engine

Publications (2)

Publication Number Publication Date
JPS5757235A true JPS5757235A (en) 1982-04-06
JPS6410768B2 JPS6410768B2 (en) 1989-02-22

Family

ID=15086918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13267780A Granted JPS5757235A (en) 1980-09-24 1980-09-24 Measuring method for friction torque of engine

Country Status (1)

Country Link
JP (1) JPS5757235A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153143A (en) * 1983-02-21 1984-09-01 Toshiba Mach Co Ltd Rotation accuracy measuring apparatus
EP0615117A2 (en) * 1993-03-08 1994-09-14 Yamaha Hatsudoki Kabushiki Kaisha Engine torque-detecting method and an apparatus therefor
JPH1151816A (en) * 1997-08-01 1999-02-26 Ono Sokki Co Ltd Simple monitoring device of engine state
JP2010163992A (en) * 2009-01-16 2010-07-29 Toyota Motor Corp Hybrid vehicle control device
CN103879565A (en) * 2012-12-23 2014-06-25 中航贵州飞机有限责任公司 Aircraft ground test-run parameter detection device
WO2014141627A1 (en) * 2013-03-12 2014-09-18 Shimada Taizo Method to measure friction loss in engines and method to detect engine driving state

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153143A (en) * 1983-02-21 1984-09-01 Toshiba Mach Co Ltd Rotation accuracy measuring apparatus
EP0615117A2 (en) * 1993-03-08 1994-09-14 Yamaha Hatsudoki Kabushiki Kaisha Engine torque-detecting method and an apparatus therefor
EP0615117A3 (en) * 1993-03-08 1995-01-11 Yamaha Motor Co Ltd Engine torque-detecting method and an apparatus therefor.
US6332352B1 (en) 1993-03-08 2001-12-25 Yamaha Hatsudoki Kabushiki Kaisha Engine torque-detecting method and an apparatus therefor
JPH1151816A (en) * 1997-08-01 1999-02-26 Ono Sokki Co Ltd Simple monitoring device of engine state
JP2010163992A (en) * 2009-01-16 2010-07-29 Toyota Motor Corp Hybrid vehicle control device
CN103879565A (en) * 2012-12-23 2014-06-25 中航贵州飞机有限责任公司 Aircraft ground test-run parameter detection device
WO2014141627A1 (en) * 2013-03-12 2014-09-18 Shimada Taizo Method to measure friction loss in engines and method to detect engine driving state
JP2014199249A (en) * 2013-03-12 2014-10-23 泰三 嶋田 Friction loss measuring method of engine and drive state detection method of engine

Also Published As

Publication number Publication date
JPS6410768B2 (en) 1989-02-22

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