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:
Mar. 09, 2010
Filed:
Sep. 15, 2008
Reza Aliakarzadeh, Regensburg, DE;
Klaus Bayerle, Obertraubling, DE;
Reza Aliakarzadeh, Regensburg, DE;
Klaus Bayerle, Obertraubling, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
In a lower partial load range of, a setpoint value of the mass flow of air into the combustion chambers is determined as a function of a predefined torque request such that it is greater than necessary for implementing the predefined torque request and large enough that individual exhaust packets can be differentiated from one another with the exhaust gas probe. Depending on the air/fuel ratio setpoint value, an actuator is actuated whose position affects the actual air mass flow. To implement the torque request, engine efficiency is simultaneously reduced by actuating another actuator. A measurement signal of the exhaust gas probe is detected. The air/fuel ratios of the exhaust packets are determined as a function of the measurement signal detected. At least one operating parameter affecting the air/fuel ratio in at least one of the cylinders is adapted as a function of the air/fuel ratios determined.