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. 12, 1982
Filed:
Dec. 08, 1980
Manfred Henning, Kaarst, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method of varying the phase spacing of sequential ignition pulses emitted by an ignition pulse transducer and an apparatus for performing the method are proposed, in which with the aid of a phase control circuit a corrected ignition control pulse train of average frequency is formed on the basis of an actual ignition control pulse train. The corrected pulse train being held constant so long as a given phase difference is maintained between the two control pulse trains. As a result, brief rpm fluctuations, which in an rpm range in the vicinity of idling rpm are perceived as jerking, are compensated for. When there are changes in rpm which cause larger phase deviations, the corrected ignition control pulse train is synchronized with the actual ignition control pulse train.