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:
Jan. 20, 1981
Filed:
Feb. 02, 1979
Werner Grozinger, Illingen, DE;
Friedrich Rabus, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electronic control apparatus for a fuel injection system in internal combustion engines which has a timing device for the generation of electric injection pulses, whose duration is dependent on operating characteristics and which are delivered to at least one electromagnetic injection valve which includes a time control circuit associated with the timing device in order to form at least one limiting value for the subsequent injection pulse and the subsequent injection pulse as well as the at least one limiting value can be delivered to a selector circuit so as to limit variations with respect to the duration of the injection signal thereby achieving smooth operation of the internal combustion engine. On the basis of an injection pulse at time tn, limiting values are formed for the duration of the subsequent injection pulse, and the next subsequent injection pulse at time tn+1 is kept within the limiting value which has been generated, it being particularly favorable to form the electronic control apparatus using digital structural elements, by means of which not only a high degree of precision and reliability but also an easy adaptation to other digital systems is obtained.