Patent · US Active

Internal combustion engine and associated operating method

US8955317B2 · kind B2 · utility

1Cited by

4References

4Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Markus Schilling · Ludwigshafen, DE
Frank Otto · Hilden, DE
Klaus Roessler · Winnipeg, CA

Key dates

Filing date	Dec 16, 2012
Grant date	Feb 17, 2015
Priority date	—
Expiry date	Dec 19, 2032

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 a supercharged internal combustion engine of a motor vehicle, at the same time an internal exhaust gas recirculation and an external exhaust gas recirculation are carried out in an engine operating range with lean burn operation modes, wherein the exhaust gas recirculation rate of the internal and the external exhaust gas recirculation is increased with increasing load and/or speed of the internal combustion engine in the lean engine operating range and, at high engine speeds and loads, a homogenous mixture operation is carried out. The invention also reside in an internal combustion engine for performing the method.

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