Fuel pressure control method for high pressure direct fuel injection engine
US5327872A · kind A · utility
35Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1993 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Sep 28, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02N11/101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The fuel pressure is kept high for a specified time or until an engine temperature goes down below a specified value after an engine stop under a hot condition of engine in order to prevent vapor lock in the fuel system. Also, a starter motor is prohibited from being switched on until a fuel pressure reaches a specified value in order to prevent a high pressure fuel pump from being operated, whereby preventing sticking or scuffing in the high pressure fuel pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.