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:
Jun. 03, 1980
Filed:
Mar. 24, 1977
Dieter Kirn, Heimsheim, DE;
Ulrich Steinbrenner, Stuttgart, DE;
Hans Schnurle, Walheim, DE;
Peter Werner, Stuttgart, DE;
Ulrich Drews, Vaihingen-Pulverdingen, DE;
Klaus Streit, Tubingen, DE;
Erwin Gloss, Korntal-Munchingen, DE;
Helmut Moder, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel mixture control apparatus for an electronic fuel injection system for internal combustion engines. In a warm-up controller, the fuel injection control pulses are lengthened for enrichment of the fuel-air mixture during engine warm-up on the basis of signals supplied by a temperature transducer. In order to make the warm-up enrichment dependent on prevailing engine states, for example on the conditions of idling and partial or full load, circuitry is provided to sense these conditions and to suitably alter the enrichment factor. A further circuit suppresses the dependence or enrichment on engine status during engine starting. Various embodiments are presented.