Method and device for controlling an internal combustion engine

Details Method and device for controlling an internal combustion engine Method and device for controlling an internal combustion engine

2006-01-30

2009-02-10

Kwon, John T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S104000, C123S435000, C123S437000

Reexamination Certificate

active

07489998

ABSTRACT:
According to the invention, prior to or during an intermediate compression around the upper dead center of a piston of an internal combustion engine during a change in charge a predetermined first fuel mixture is metered into the combustion chamber of the respective cylinder. During the intermediate compression, measured values of pressure in the combustion chamber are measured in a predetermined first crankshaft angle window using cylinder pressure sensor. A measurement for a conversion rate of the first fuel mixture is determined based on the detected measured values of the pressure and reference values of the pressure, which characterize the corresponding pressure curve in the combustion chamber when no fuel is metered. A control signal for at least one actuator of the internal combustion engine is determined based on the conversion rate.

REFERENCES:
patent: 4624229 (1986-11-01), Matekunas
patent: 6155212 (2000-12-01), McAlister
patent: 7191738 (2007-03-01), Shkolnik
patent: 2005/0166869 (2005-08-01), Shkolnik
patent: 199 00 738 (2000-06-01), None
patent: 199 52 096 (2001-05-01), None
Untersuchungen zur homogenen Dieselverbrennung bei innerer Gemischbildung, Fakultät für Maschinenbau Karlsruhe, Dissertation von Eckart Schloz, Jan. 24, 2003, pp. 122-129.

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