Patent · US Active

Two-stroke engine and a method for the operation thereof

US8967101B2 · kind B2 · utility

0Cited by

4References

16Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Christian Barth · Celle, DE
Johannes Menzel · Oberhausen, DE
Marc Schmid · Oppenweiler, DE
Jens Kutzbach · Waiblingen, DE

Key dates

Filing date	Sep 5, 2012
Grant date	Mar 3, 2015
Priority date	—
Expiry date	Dec 29, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A two-stroke engine has a cylinder wherein a piston is journalled for reciprocating movement. The piston delimits a combustion chamber configured in the cylinder. The engine has an outlet from the combustion chamber and a transfer channel which opens at an inlet opening into the crankcase and at a transfer window in the combustion chamber. The piston drives a crankshaft via a connecting rod. The crankshaft is rotatably journalled in the crankcase. At least one control element for the inlet opening is connected to the crankshaft so as to rotate therewith. The control element is so arranged that the inlet opening is at least partially closed thereby in at least one operating state of the engine during the downward stroke of the piston at least 5° crankshaft angle after the opening of the transfer window.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.