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. 21, 2008
Filed:
Aug. 17, 2006
Jan Borchardt, Waiblingen, DE;
Kai-ulrich Machens, Stuttgart, DE;
Rainer Ziegler, Remseck, DE;
Robert Wirtz, Euskirchen, DE;
Jan Borchardt, Waiblingen, DE;
Kai-Ulrich Machens, Stuttgart, DE;
Rainer Ziegler, Remseck, DE;
Robert Wirtz, Euskirchen, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
A mixture-lubricated internal combustion engine has a cylinder () in which a combustion chamber () is formed. The combustion chamber () is delimited by a piston () mounted to move back and forth. The piston () drives a crankshaft () rotatably journalled in a crankcase (). The engine has an inlet channel () which supplies fuel and combustion air into the combustion chamber () as well as an exhaust outlet () from which exhaust gases flow from the combustion chamber. The intake inlet () and the exhaust outlet () are valve controlled. A flow connection is present between the crankcase () and the inlet channel (). A good idle stability and a good idle acoustic of the engine are achieved in that at least one control valve () is mounted in the flow connection.