Fuel injection system for internal combustion engines with combined fuel pump control switch
US3934561A · kind A · utility
6Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Oct 4, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
To reliably permit closing of a switch controlling operation of a fuel supply pump which provides pressurized fuel to a fuel injection system, even under low air flow conditions in the induction pipe of an internal combustion engine, an auxiliary spring is arranged to counteract the force of a reset spring against which a deflection flap or disk in the induction pipe of the engine is deflectable. The auxiliary spring is active only over a limited range of deflection, from rest position, and immediately adjacent thereto, so that the fuel pump will not be dis-connected under low air flow conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.