Idle and off-idle operation of a two-stroke fuel-injected multi-cylinder internal combustion engine
US4991558A · kind A · utility
31Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A multiple cylinder two-stroke fuel-injected internal combustion engine is operated at idle by interrupting the fuel injection stages in a predetermined pattern such that over a certain number of crankshaft revolutions a fewer number of injections occur than over the same number of revolutions at non-idle. The quantity of fuel injected per injection is increased relative to that required to operate the engine at idle wihtout any injection interruptions. Spark timing is also advanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.