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:
Oct. 02, 2007
Filed:
Jan. 10, 2006
Klaus Bruchner, Ebersbach, DE;
Ralf Kaufmann, Stuttgart, DE;
Rudolf Klein, Weinstadt, DE;
Mario Mürwald, Ebersbach, DE;
Klaus Bruchner, Ebersbach, DE;
Ralf Kaufmann, Stuttgart, DE;
Rudolf Klein, Weinstadt, DE;
Mario Mürwald, Ebersbach, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
In a method for venting a crankcase of an internal combustion engine, in which, in a first operating range under part-load, the crankcase is vented via a first venting line, which opens into an intake line of the internal combustion engine downstream of a throttle valve, and in a second operating range under full load engine operation, the crankcase is vented via a second venting line, which opens into the intake line upstream of the throttle valve, the first venting line includes a control valve and a central unit is provided which operates the control valve so as to control the flow of vent gases through the first venting line over a range including a complete flow interruption under engine overrun condition to prevent venting gases from reaching the engine exhaust system when the internal combustion engine is operating in an overrun mode.