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:
Aug. 25, 1998
Filed:
Sep. 23, 1996
Peter Kreuter, Aachen, DE;
Peter Heuser, Aachen, DE;
Meta Motoren- und Energie-Technik GmbH, Herzogenrath, DE;
Abstract
A reciprocating piston internal combustion engine has at least one cylinder with a spark plug and at least one piston reciprocating within the at least one cylinder. At least one first intake duct having a mouth connected to the cylinder and a valve seat located at the mouth is provided. At least one first intake valve resting at the valve seat in a closing position of the intake valve is provided. A control device controls the lift action of the first intake valve. The first intake valve is designed such that, in flow direction of the fuel into the cylinder, for short lifts of the first intake valve a flow cross-section of the first intake duct into the cylinder at the mouth is throttled in a throttle area extending at least over an angular distance about a central axis of the first intake valve such that for small valve lifts a directed inflow with increased velocity results. Alternatively, the intake duct has a wall portion extending downstream of the valve seat in the flow direction that is designed so as to provide a throttle area extending at least over an angular distance about a central axis of the first intake valve such that for small valve lifts a directed inflow with increased velocity results.