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:
Dec. 05, 2000
Filed:
Apr. 01, 1999
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention is directed to a method for high-resolution rpm detection in a multicylinder internal combustion engine having a crankshaft. Segment times (ts) are detected in which the crankshaft of the engine passes through predetermined angular regions. First corrective values are formed during overrun operation and logically coupled to the segment times (ts) so that deviations of the segment times (ts) of different segments are compensated in the overrun operation. Second corrective values outside of the overrun operation are determined on the basis of the corrected segment times and logically coupled to at least one of the corrected segment times and further processed segment times so that the deviations of the corrected segment times or the further processed segment times are compensated with each other during misfire-free operation.