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. 13, 2006
Filed:
Mar. 08, 2003
Matthias Blessing, Berglen, DE;
Gerhard Koenig, Lauterstein, DE;
Christian Krueger, Stuttgart, DE;
Ruediger Preiss, Winnenden, DE;
Alois Raab, Boebingen, DE;
Martin Schnabel, Aalen, DE;
Matthias Blessing, Berglen, DE;
Gerhard Koenig, Lauterstein, DE;
Christian Krueger, Stuttgart, DE;
Ruediger Preiss, Winnenden, DE;
Alois Raab, Boebingen, DE;
Martin Schnabel, Aalen, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A method is provided for operating an internal combustion piston engine, in which fuel is injected directly into a working chamber in the form of a pre-injection and main injection by means of an injection nozzle with a plurality of injection holes. The pre-injection takes place in a clocked manner. In order to minimize the moistening of the walls of the combustion chamber, a higher fuel pressure prevails in an injection device during the main injection than during the pre-injection. Furthermore, optimum homogenization of the pre-injected quantity of fuel is obtained by restricting the range of the injected fuel jets while simultaneously maximizing the atomization of the fuel particles and reinforcing the disintegration of the fuel jets during the clocked pre-injection.