Patent · US Active

Method for operating an internal combustion engine, and associated internal combustion engine

US8019527B2 · kind B2 · utility

0Cited by

7References

18Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Wolfram Schmid · Eislingen/Fils, DE
Siegfried Sumser · Stuttgart, DE

Key dates

Filing date	Sep 17, 2007
Grant date	Sep 13, 2011
Priority date	—
Expiry date	Jul 13, 2030

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 including inlet valves with variably adjustable opening curves, during part-load operation, the closing time of the inlet valves and the fuel injection time are controlled as a function of the cylinder internal temperature so as to maintain the cylinder internal temperature relatively low in a controllable manner for reducing NOx emissions.

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