Patent · US Expired

Fuel injection system for an internal combustion engine

US6520152B1 · kind B1 · utility

16Cited by

5References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernd Mahr · Plochingen, DE
Martin Kropp · Ditzingen, DE
Hans-Christoph Magel · Pfullingen, DE
Wolfgang Otterbach · Stuttgart, DE

Key dates

Filing date	Jun 4, 2001
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Jun 15, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a fuel injection system for an internal combustion engine, in which fuel can be injected at least two different, high fuel pressures, via injectors, into the combustion chamber of the engine, having a central first pressure reservoir for the higher fuel pressure and a central second pressure reservoir, supplied from the first pressure reservoir, in which by regulation of its fuel delivery, the lower fuel pressure is maintained, and having a valve unit for switchover between the higher and the lower fuel, the valve unit for switchover between the higher and the lower fuel is provided locally for each injector. With this injection system, improved metering of the lower fuel pressure is possible.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.