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:
Sep. 04, 2018
Filed:
Jul. 21, 2014
Andreas Stihl Ag & Co. KG, Waiblingen, DE;
Christian Eberle, Korb, DE;
Markus Weinig, Winnenden, DE;
Claus Naegele, Stuttgart, DE;
Mark Reichler, Remshalden, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f, f, f) which is coordinated with the first frequency (f). In a second operating state, the second valve is opened independently of the first frequency (f).