Fuel supply apparatus for a direct injection gasoline internal combustion engine
US6021763A · kind A · utility
25Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1997 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Oct 17, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
At the time of low temperature start up of a direct injection gasoline engine internal combustion engine, a pressure adjustment function of a low pressure pressure regulator is stopped, so that all of the fuel pumped from a low pressure fuel pump is supplied to a high pressure fuel pump. Moreover, the fuel from a high pressure fuel system is returned directly to a fuel tank. Hence vapor produced while the engine is stopped is discharged together with the fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.