Patent · US Expired

Method for injection fuel, with multiple triggering of a control valve

US6644280B2 · kind B2 · utility

2Cited by

4References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Nestor Rodriguez-Amaya · Stuttgart, DE
Anja Melsheimer · Stuttgart, DE
Volker Reusing · Stuttgart, DE
Volker Leifert · Charleston, US

Key dates

Filing date	Oct 15, 2001
Grant date	Nov 11, 2003
Priority date	—
Expiry date	Nov 11, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/703
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for injecting fuel, which is at high pressure, into air-compressing internal combustion engines employing an injection system which includes a compressor unit for compressing fuel and containing an actuating device for control valves with which device the nozzle needle of an injector is controlled. One of the two control valves is triggered multiple times or in clocked fashion via a piezoelectric actuator during individual injection phases or during the injection cycle.

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