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:
Apr. 03, 2001
Filed:
May. 05, 1999
Lino Guzella, Wallisellen, CH;
Charles Robert Koch, Pattonville/Remseck, DE;
Matthias Scherer, Esslingen, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
An electronic engine control system for an internal-combustion engine has a computer with programs stored therein and interacts with a sensor system to determine a residual gas fraction in a combustion space of the engine. The engine control system generates a signal value, which correlates with the current residual gas fraction, from a signal value which is generated by the engine control system and which correlates with a current air/fuel mass ratio of a carbureted fuel fed to the combustion space, and from a signal value which is sensed by the sensor system and which correlates with a current air/fuel mass ratio of an exhaust gas discharged from the combustion space after the combustion.