Method and apparatus for measuring air quantity in relation to engine speed
US4254744A · kind A · utility
6Cited by
8References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jun 19, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F9/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
First electrical pulses are generated in response to the quantity of air inducted per unit time and second electrical pulses are generated in response to the speed of revolution of an engine crankshaft. A counter is provided which counts the number of second electrical pulses for an interval between successive ones of the first electrical pulses. The counted number of second electrical pulses is fed into a computer where the signal is processed to derive a signal representative of the reciprocal of the counted number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.