JPS5757235A - Measuring method for friction torque of engine - Google Patents
Measuring method for friction torque of engineInfo
- 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
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.
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)
| 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 |
-
1980
- 1980-09-24 JP JP13267780A patent/JPS5757235A/en active Granted
Cited By (9)
| 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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