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. 31, 2006
Filed:
Jan. 14, 2005
Andreas Pfaeffle, Wuestenrot, DE;
Marcel Wuest, Korntal, DE;
Dirk Samuelsen, Ludwigsburg, DE;
Stefan Forthmann, Ludwigsburg, DE;
Michael Kolitsch, Weissach, DE;
Andreas Fritsch, Waiblingen, DE;
Andreas Pfaeffle, Wuestenrot, DE;
Marcel Wuest, Korntal, DE;
Dirk Samuelsen, Ludwigsburg, DE;
Stefan Forthmann, Ludwigsburg, DE;
Michael Kolitsch, Weissach, DE;
Andreas Fritsch, Waiblingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Described is a method for controlling a temperature downstream of a catalyst in the exhaust tract of an internal combustion engine including a first control loop in which a first control variable is calculated from a first deviation that is calculated from a first actual value and a first setpoint value and influences an intra-engine heat generation. In the process, the first actual value is determined as a measure of a temperature downstream of the catalyst. The method features a second control loop in which at least one second control variable is calculated from a second deviation that is calculated from a second actual value and a second setpoint value; a temperature upstream of the catalyst being determined as the second actual value. Also described is a controller which controls the sequence of such a method.