The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 2010
Filed:
Nov. 08, 2007
Malte Koeller, Ribnitz-Damgarten, DE;
Ulf Lezius, Leiferde, DE;
Olaf Magnor, Braunschweig, DE;
Michael Schnaubelt, Gifhorn, DE;
Matthias Schultalbers, Meinersen, DE;
Malte Koeller, Ribnitz-Damgarten, DE;
Ulf Lezius, Leiferde, DE;
Olaf Magnor, Braunschweig, DE;
Michael Schnaubelt, Gifhorn, DE;
Matthias Schultalbers, Meinersen, DE;
IAV GmbH Ingenieurgesellschaft Auto und Verkehr, Berlin, DE;
Abstract
A method for estimating the cylinder interior pressure of an internal combustion engine from a cylinder pressure model having at least the input variables load, speed of rotation, and crank angle (P), which forms the cylinder interior pressure (P) to be determined, corrected by a pressure correction value (ΔP). The pressure correction value (ΔP) is determined from an observation of the alternating moments at the crankshaft. The modeled value of the cylinder interior pressure from the pressure model is obtained as a pre-control value, and corrected with a correction value formed from the measured value of the non-uniformity of rotation.