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. 05, 2005
Filed:
Sep. 08, 2003
Claus Fleig, Ludwigsburg, DE;
Werner Geyer, Berglen, DE;
Jörg Schlossarczyk, Winnenden, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
The invention relates to a method for operating a two-stroke engine having scavenging-advance storage. The combustion chamber () which in configured in the cylinder () is supplied with an air/fuel mixture via a transfer channel (). This air/fuel mixture is drawn by induction through an inlet into the crankcase () during the intake phase. During the intake phase, a fuel-free fluid such as pure air is inducted via a fluid channel () and stored in the transfer channel. To obtain good exhaust-gas values while also having reduced fuel consumption and reliable lubrication, lambda (λ) of the air/fuel mixture, which is stored in the crankcase (), is adjusted in a range of approximately 0.2 to 0.6 in the part-load and full-load ranges of the two-stroke engine ().