Vehicle state analysis system and its analysis method
US6694245B2 · kind B2 · utility
13Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F9/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A computing unit 3 of an analysis device 1 calculates a weight of fuel consumed by an engine 10 based on the weight of intake air and air fuel ratio of an engine of a vehicle to be analyzed detected by an air flow meter 14 and an air-fuel ratio sensor 16, and computes a fuel consumption rate based thereon and the running distance. The computation of fuel consumption rate does not require an injection pulse signal, so the fuel consumption rate can be precisely computed even for a vehicle which does not have an injection pulse signal such as a non-EGI vehicle or a diesel engine vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.