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. 22, 2001
Filed:
Jul. 21, 1999
Dirk Mentgen, Schwieberdingen, DE;
Georg Mallebrein, Korntal-Münchingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for operating an internal combustion engine especially of a motor vehicle is described wherein fuel is injected directly into the combustion chamber either in a first operating mode during a compression phase or in a second operating mode during an induction phase. The fuel mass (m,), which is to be injected into the combustion chamber, is determined in both modes of operation, inter alia, in dependence upon a computed desired torque (M,) which is to be outputted by the engine. An injection duration (t,in ms) is determined from the fuel mass (m,) which is to be injected. Then, an injection angle (&agr;,in degrees) is determined from the injection duration (t,in ms) in dependence upon the rpm (n,) of the engine (,) Finally, the fuel is injected into the combustion chamber during the injection angle (&agr;,in degrees).