Device for electrical measurement of the level of a liquid in a fuel tank
US4744247A · kind A · utility
5Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03217
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for electrical measurement of the level of a fluid contained in a fuel tank of a motor vehicle is disclosed. In addition to a variable resistance float sensor in a dip tube, a travel sensor is arranged in the dip tube to determine the distance between the dip tube and the bottom of the tank in order to offset measurement errors caused by tolerances in the manufacture of the tank and resultant differences in the mounting position of the dip tube in the tank. The travel sensor includes a spring load rod extending to the bottom of the tank and a variable resistance connected to the rod to produce a calibration value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.