Patent · US Expired

Method for operating an internal combustion engine

US7152573B2 · kind B2 · utility

5Cited by

1References

20Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Oliver Abet · Murrhardt, DE
Gernot Hertweck · Fellbach, DE
Thomas Muehleisen · Cuyahoga Falls, US
Marco Stotz · Echterdingen, DE

Key dates

Filing date	Feb 7, 2004
Grant date	Dec 26, 2006
Priority date	—
Expiry date	Feb 7, 2024

Classification

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

Abstract

In a method for operating an internal combustion engine with exhaust gas purification system, a rich-burn mode of the internal combustion engine with a rich exhaust gas composition or a lean-burn mode of the internal combustion engine with a lean exhaust gas composition is set alternately, and the quantity of fuel which is introduced during a combustion cycle of the internal combustion engine is introduced by at least one preinjection, at least one main injection and at least one afterinjection.

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