Patent · US Active

Method and device for controlling an internal combustion engine

US8001951B2 · kind B2 · utility

2Cited by

8References

20Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Dietmar Ellmer · Regensburg, DE
Rudiger Herweg · Eßlingen, DE
Thorsten Lauer · Burglengenfeld, DE
Michael Mladek · Karlsruhe, DE
Mayk Stelter · Stuttgart, DE

Key dates

Filing date	Jul 20, 2005
Grant date	Aug 23, 2011
Priority date	—
Expiry date	Mar 2, 2027

Classification

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

Abstract

In order to control an internal combustion engine according to the invention, a polytropic exponent is determined in accordance with at least two measured values of the pressure in the combustion chamber of the cylinder, said measured values being detected after closing the gas discharge valve and before successively opening the gas intake valve. An exhaust gas mass which is located in the cylinder after closing the gas discharge valve and before successively opening the gas intake valve is determined according to the polytropic exponent at an estimated value of the pressure after closing the gas discharge valve and before successively opening the gas intake valve as well as at a certain temperature of the exhaust gas located in the cylinder after closing the gas discharge valve and before successively opening the gas intake valve. An actuation signal for controlling an actuating member of the internal combustion engine is generated in accordance with the determined exhaust gas mass.

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