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. 29, 1999
Filed:
Feb. 23, 1998
Andreas Biemelt, Schwaikheim, DE;
Peter Hohner, Leinfelden-Echterdingen, DE;
Karl Gunter, Esslingen, DE;
Helmut Schorn, Esslingen, DE;
Daimler-Benz AG, Stuttgart, DE;
Abstract
In a gasoline internal combustion engine with direct fuel injection a spark plug with a center electrode is mounted in the cylinder top so as to project into the combustion chamber. A mass electrode is disposed on the piston so as to project upwardly into the combustion chamber and is movable with the piston toward and from the spark plug center electrode. An ignition system is provided for timely generating a spark between the spark plug electrode and the movable mass electrode for igniting a fuel/air mixture in the combustion chamber. A fuel injector is mounted in the cylinder top and adapted to provide a cone-like fuel beam with an envelope disposed between the spark plug electrode and the mass electrode such that a spark generated between the two electrodes extends through the fuel injection beam envelope.