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:
Aug. 07, 2012
Filed:
Feb. 11, 2009
Gerald Rieder, Freising, DE;
Paul Rodatz, Landshut, DE;
Gerald Rieder, Freising, DE;
Paul Rodatz, Landshut, DE;
Continental Automotive GmbH, Hannover, DE;
Audi AG, Ingolstadt, DE;
Abstract
A start quantity adaptation value (ST_AD) is adapted as a function of a variable that is characteristic of a rotational speed profile during the start (ST) of the internal combustion engine. A lambda adaptation value (LAM_AD) is adapted as a function of at least one control parameter (LAM_RP) of the lambda controller if a preset condition (COND) is met, which presupposes the existence of a quasi-stationary operating state. An intermediate correction value (ZW_KOR) is adapted as a function of a change of the start quantity adaptation value (ST_AD) since a last adaptation of the lambda adaptation value (LAM_AD). A fuel mass (MFF) to be metered is determined as a function of at least one operating variable (BG) of the internal combustion engine. The fuel mass (MFF) to be metered is corrected during the start (ST) of the internal combustion engine by means of the start quantity adaptation value (ST_AD). The fuel mass (MFF) to be metered outside of the start (ST) of the internal combustion engine is corrected as a function of the lambda adaptation value (LAM_AD). The fuel mass (MFF) to be metered is corrected as a function of the intermediate correction value (ZW_KOR) until for the first time after the respective start (ST) the lambda adaptation value (LAM_AD) is adapted.