US 7,542,841 B2
Method and device for controlling an internal combustion engine
Khaled Ben Yahia, Stuttgart (Germany); Dara Torkzadeh, Renningen-Malmsheim (Germany); Katharina Michalik, Stuttgart-Zuffenhausen (Germany); and Anton Siemens, Stuttgart (Germany)
Assigned to Robert Bosch GmbH, Stuttgart (Germany)
Filed on Jul. 18, 2007, as Appl. No. 11/879,848.
Claims priority of application No. 10 2006 033 483 (DE), filed on Jul. 19, 2006.
Prior Publication US 2008/0027621 A1, Jan. 31, 2008
Int. Cl. G06F 19/00 (2006.01); F02M 7/00 (2006.01); G01M 15/00 (2006.01)
U.S. Cl. 701—103  [701/110; 123/435; 73/114.16] 6 Claims
OG exemplary drawing
 
2. A method for controlling an internal combustion engine comprising:
ascertaining a combustion chamber quantity characterizing a combustion process based on input quantities by using a polytropic exponent, the polytropic exponent being ascertained based on performance characteristics of the internal combustion engine.