Fuel injection system and strategy
US5671716A · kind A · utility
14Cited by
13References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Oct 3, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/047
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system used in the intake air passageway of an internal combustion engine has a strategy for reducing cold start hydrocarbon emissions. The fuel injector has an actuator which allows the fuel spray pattern to be varied from one which is widely dispersed and atomized to one which is only weakly dispersed. A strategy for varying the spray pattern during the engine warm-up period after cold start is disclosed. The strategy increases evaporation within the passageway so that cold start overfuelling and attendant hydrocarbon emissions are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.