Device for measuring the mass of a flowing medium
US4338814A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Oct 27, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6983
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for measuring the mass of a flowing medium, especially for measuring the aspirated air mass in internal combustion engines, which has a temperature-dependent resistor disposed in the path of a flowing medium, whose temperature and/or resistance is controlled in closed-loop fashion in accordance with the mass of the medium, with the control variable being a standard for the mass of the medium. The temperature-dependent resistor is embodied as a hot band and guided over at least three support points in the form of a loop. The band portions of the loop extending away from the intermediate support point are then connected with one another in an electrically conductive manner at a contact area. The hot band is disposed in the flowing medium in such a manner that one of the narrow faces performs as an exposed face of the hot band disposed counter to the flow direction, while the wide faces extend substantially in the flow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.