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:
Jul. 30, 2002
Filed:
Sep. 05, 2000
Martin Pischinger, Aachen, DE;
Markus Duesmann, Stolberg, DE;
Enno Lohse, Stolberg, DE;
Michael Schebitz, Eschweiler, DE;
Wolfgang Salber, Aachen, DE;
FEV Motorentechnik GmbH, Aachen, DE;
Abstract
The present invention relates to a piston-type internal combustion engine comprising gas-exchange valves which can be driven in a completely variable manner by a motor control ( ) and which communicate with an air supply channel ( ) provided with a device ( ) for generating a negative pressure using the energy components of the air flowing through said air supply channel ( ). This device is provided with means that can be driven for adaptation to the modifications in the flow energy which are inherent to the operation, and communicates with at least one negative-pressure user ( ) through at least one negative-pressure duct ( ).