Patent · US Expired

Method and device for starting an internal combustion engine having direct injection

US6843222B2 · kind B2 · utility

4Cited by

3References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Udo Sieber · Bietigheim, DE
Jochen Laubender · Ingolstadt, DE
Andre-Francisco Casal Kulzer · Eppelheim, DE

Key dates

Filing date	Dec 12, 2003
Grant date	Jan 18, 2005
Priority date	—
Expiry date	Dec 12, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a direct start of an internal combustion engine, sufficient energy may need to be released in a first combustion to set the internal combustion engine into motion, if possible without the assistance of an additional assembly, such as an electromotive starter. For this reason, the carburetion of an air-fuel mixture, made up of the air mass present in a combustion chamber and the fuel mass injected therein, is of great importance. In order to improve the mixture formation during a start, e.g., during a warm start of an internal combustion engine, the fuel mass required for a mixture formation is introduced into the combustion chamber, in full or in part, already prior to a start phase by at least one injection, and the mixture formation may be improved in this manner by vaporization of the introduced fuel mass.

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