Mass-flow sensing transducer for internal combustion engines
US4637261A · kind A · utility
10Cited by
12References
10Claims
0Family size
Inventors
Key dates
| Filing date | Nov 27, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Nov 27, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for obtaining the mass flow rate of engine aspirated air. An ultrasonic transducer measures the density of atmospheric air, while coincidentally measuring the velocity of air within a venturi of an engine air induction tube. The two individual measurements produce a single electric output signal proportional to the mass flow rate of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.