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:
May. 13, 2008
Filed:
Feb. 22, 2006
Brian Eves, Basildon, GB;
Dirk Borrmann, Huerth, DE;
Gary Peirce, Chelmsford, GB;
Franz Brinkmann, Huerth-Efferen, DE;
Brian Eves, Basildon, GB;
Dirk Borrmann, Huerth, DE;
Gary Peirce, Chelmsford, GB;
Franz Brinkmann, Huerth-Efferen, DE;
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
The invention relates to a method for heating a catalytic converter which is arranged in the exhaust-gas path of an internal combustion engine with direct injection and spark ignition. In the method, a first fuel injection takes place in the intake stroke (E), whereas a second fuel injection begins in the combustion stroke after top dead center and prior to the spark ignition of the air/fuel mix. It is preferable for the second fuel injection to continue beyond the ignition instant until the pressure in the combustion chamber reaches the fuel injection pressure.