Patent · US Expired

Method of operating a direct fuel injected internal combustion engine

US6814049B2 · kind B2 · utility

6Cited by

10References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Vogel · Ditzingen, DE
Werner Herden · Gerlingen, DE

Key dates

Filing date	Nov 29, 2002
Grant date	Nov 9, 2004
Priority date	—
Expiry date	Mar 5, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/389
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for operating a direct-injecting gasoline internal combustion engine (1), especially of a motor vehicle, wherein the gasoline is injected directly into the combustion chamber (4) of the engine (1) and an ignition spark is ignited in the combustion chamber (4). In order to be able to reliably ignite an air/gasoline mixture with a relatively low ignition voltage notwithstanding a relatively large electrode gap of a spark plug (10) of the engine (1), it is suggested that the ignition spark be ignited in advance of the start of injection (45) and that a spark burn duration (44) be maintained up to past the end of the injection (45).

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