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:
Jan. 14, 2003
Filed:
Nov. 08, 2000
Rainer Werner Jorach, Remseck-Aldlingen, DE;
Gerhard König, Lauterstein, DE;
Alois Raab, Böbingen a.d. Rems, DE;
Eckart Schloz, Marbach, DE;
Petra Stapf, Fellbach, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A method for operating a reciprocating-piston internal combustion engine with direct fuel injection. Injecting fuel in a lower part-load range, for the formation of a heterogeneous mixture, with a higher injection pressure centrally into a working space or a piston recess shortly before top dead center, or, optionally, in the case of very early injection (crank angle of 180° to 20° before top dead center), forming locally an ignitable homogeneous mixture with homogeneous combustion by defined charge stratification, controlled air movement in the cylinder and injection pressure combined with timed injection; injecting fuel in a middle part-load range, for a formation of a homogeneous mixture, with a lower injection pressure in a phase with a crank angle of 180° to 20° before top dead center; and injecting part of the fuel, in an upper part-load range ( ) and/or full-load range, first, for the formation of a homogeneous mixture, with a lower injection pressure into the working space or the piston recess in a phase with a crank angle of 180° to 20° before top dead center and, injecting the rest of the fuel, for the formation of a heterogeneous mixture, with a higher injection pressure into the working space or the piston recess in a phase around top dead center.