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:
Nov. 23, 1982
Filed:
Jan. 26, 1981
Gerhard Stumpp, Stuttgart, DE;
Ludwig Walz, Stuttgart, DE;
Gerhard Schielinsky, Schwaikheim, DE;
Wolf Wessel, Oberriexingen, DE;
Thomas Kuttner, Stuttgart, DE;
Ulrich Flaig, Markgroningen, DE;
Fridolin Piwonka, Gerlingen, DE;
Hermann Eisele, Vaihingen-Enz, DE;
Andreas Boehringer, Stuttgart, DE;
Hans Kubach, Korntal-Munchingen, DE;
Johannes Locher, Stuttgart, DE;
Waldemar Becker, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel control system for an internal combustion engine with correction for optimum values based on a variety of factors. Characteristic engine data is stored in preferably digital memories with capabilities for interpolation. Upon addressing the engine data fields with input signals related to current operational variables, for example the accelerator pedal position, the control system derives therefrom a nominal air flow rate which is used as the reference value in a control loop that sets the amount of recycled exhaust gas and the fresh air flow. As the actual air flow rate approaches the reference value, the fuel flow is adjusted to insure correct mixtures at all times. In another embodiment, the fuel is supplied on demand but cannot exceed a maximum value except under special override conditions. Several other embodiments and variants are presented.