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:
Dec. 20, 2005
Filed:
Sep. 24, 2004
Gerhard Osburg, Kernen, DE;
Wolfgang Luithardt, Waiblingen, DE;
Gerhard Osburg, Kernen, DE;
Wolfgang Luithardt, Waiblingen, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
A two-stroke engine () has a combustion chamber () configured in a cylinder (). The combustion chamber () is delimited by a reciprocating piston () and drives a crankshaft () which is rotatably journalled in a crankcase (). The two-stroke engine () has an outlet () out of the combustion chamber () and at least one transfer channel () which connects the crankcase () to the combustion chamber () at pregiven piston positions. The transfer channels () open with transfer windows () into the combustion chamber (). To obtain a good start and good idle performance and low exhaust-gas values, an ancillary channel () is provided which is connected into the combustion chamber () at one end () and into the transfer channel () with the other end (). During operation, the ancillary channel () opens into the combustion chamber () during the downward stroke of the piston () while the transfer window () to the combustion chamber () is still closed.