Fuel-metering system for internal combustion engines
US5020495A · kind A · utility
8Cited by
9References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Oct 4, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/126
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a fuel-metering system for internal combustion engines, the fuel metering is stopped during the overrun operation of the engine and, after overrun cutoff, is increased temporarily with respect to the metering necessary for normal operation and the instantaneous operating point of the engine, in order to accelerate with this fuel enrichment the build-up again of the fuel film in the intake pipe without impairing the composition of the fuel/air mixture. For exact apportioning of the fuel enrichment, the output signal of a lambda probe (21) characterizing the "rich mixture" is used as cutoff criterion for the fuel enrichment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.