Method for regulating the pressure in a fuel accumulator of an internal combustion engine
US7040291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Oct 25, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/31
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for regulating the pressure in a fuel accumulator of an internal combustion engine, in particular in a common rail system is described. The provision of different regulating modes for regulating the pressure in the fuel accumulator is known from the related art. The difference between the individual regulating modes is that, in these modes, only one or multiple independent regulating circuits are active simultaneously to regulate the pressure. A switch-over operation between the regulating modes usually takes place on the basis of different operating states of the internal combustion engine. To minimize disturbances in the pressure in the fuel accumulator during a switch-over operation between two regulating modes, the regulating circuits involved in the switch-over operation are disconnected, and the regulating devices of these regulating circuits are supplied with a suitable switch-over input signal that is predetermined for the switch-over operation in question instead of an input signal representing a system deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.