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:
Apr. 29, 2008
Filed:
Jan. 13, 2006
Axel Klimmek, Schwaikheim, DE;
Silke Kaminski, Waiblingen, DE;
Werner Geyer, Berglen, DE;
Roland Schmidt, Korb, DE;
Tommy Roitsch, Waiblingen, DE;
Ralf Blechsmidt, Kernen, DE;
Andreas Bähner, Weinstadt, DE;
Olaf Schmidt, Korb, DE;
Axel Klimmek, Schwaikheim, DE;
Silke Kaminski, Waiblingen, DE;
Werner Geyer, Berglen, DE;
Roland Schmidt, Korb, DE;
Tommy Roitsch, Waiblingen, DE;
Ralf Blechsmidt, Kernen, DE;
Andreas Bähner, Weinstadt, DE;
Olaf Schmidt, Korb, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
A two-stroke engine has a cylinder and a piston reciprocating in the cylinder and delimiting a combustion chamber. The piston has at least one piston recess. A crankshaft is rotatably arranged in a crankcase connected to the cylinder. A connecting rod connects piston and crankshaft. Transfer channels connect the crankcase to the combustion chamber in pre-defined piston positions. The transfer channels each have a transfer port opening into the combustion chamber. A device for supplying fuel and an air channel supplying combustion air are provided. In predetermined piston positions, the air channel is connected by the piston recess to the transfer ports. The air channel opens into the cylinder bore opposite the exhaust for the exhaust gases. The air channel, the piston recess, and the transfer channels define an air passage that provides approximately uniform distribution of air from the air channel into the transfer channels.