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:
May. 30, 2000
Filed:
Dec. 23, 1998
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The boost pressure in a turbocharged internal combustion engine is regulated by closed-loop control. A current performance graph value u(k), corresponding to a desired boost pressure, is determined from a speed/load-dependent performance graph. After that, the current performance graph value u(k) is compared with a previous performance graph value u(k-1). If the current performance graph value u(k) is greater than or equal to the previous performance graph value u(k-1), then the current performance graph value u(k) is transmitted as the process parameter x(k). Conversely, if the current performance graph value u(k) is less than the previous performance graph value u(k-1), then the current performance graph value u(k) is filtered by a PT.sub.2 member after an idle time elapses and is transmitted as the process parameter x(k).