System and method for measuring brake mean effective pressure in a running vehicle
US6877367B2 · kind B2 · utility
1Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Oct 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a method for easily measuring a brake mean effective pressure of a running vehicle. An air flow sensor, a λ sensor and a data collecting apparatus are mounted to the vehicle. A running speed and engine speed from the vehicle while actually running on a road surface, and output of the air flow sensor an the λ sensor are inputted to the data collecting apparatus. Specific fuel consumption is obtained from an intake air amount and ratio of excessive air in exhaust gas. Output of an engine is obtained from a relation between the specific fuel consumption and the engine speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.