Intake air amount measuring apparatus for internal combustion engines
US5681989A · kind A · utility
16Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/698
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides an apparatus for measuring intake air for an internal combustion engine by means of a detecting unit including a heat generating resistor, and a flow amount arithmetic unit for calculating an air flow amount on the basis of the output from the detecting unit. The measuring apparatus further includes an equalizer circuit for regulating the amplitude or phase of the output signal from the detecting unit, between the detecting unit and the flow amount arithmetic unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.