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. 16, 1980
Filed:
May. 01, 1978
Ulrich Drews, Vaihingen-Pulverdingen, DE;
Michael Horbelt, Schwieberdingen, DE;
Hans Schnurle, Walheim, DE;
Peter Werner, Stuttgart, DE;
Otto Glockler, Renningen, DE;
Dieter Gunther, Murr, DE;
Richard Bertsch, Asperg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The cyclic control pulses for actuating the fuel injection valves of an internal combustion engine are extended during engine starting at low temperatures. The degree of pulse extension, i.e. of fuel enrichment, is made dependent on engine temperature and decreases as a function of cranking time. In addition, a repeated starting attempt will be accompanied by reduced pulse extension to prevent excessive enrichment of the mixture. The pulse extension may also be retained for a period of time after engine cranking to insure smooth running.