Patent · US Expired

Method for operating an otto-cycle internal combustion engine with fuel injection on a cold start

US6725835B2 · kind B2 · utility

2Cited by

7References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Joos · Walheim, DE
Ralf Daeubel · Markgröningen, DE
Gerd Grass · Schwieberdingen, DE
Ruediger Weiss · Metzingen, DE
Hansjoerg Bochum · Leinfelden, DE
Edmund Schaut · Friolzheim, DE

Key dates

Filing date	Sep 16, 2002
Grant date	Apr 27, 2004
Priority date	—
Expiry date	Sep 16, 2022

Classification

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

Abstract

A method is provided for operating a spark ignition internal combustion engine having fuel injection at a cold start. The method retards the spark angle to a cold start value at least for the first combustion in at least one cylinder of the internal combustion engine during a cold start phase, the fuel injected into the cylinder being brought to combustion, and the method sets the spark angle to normal, to end the cold start phase.

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