Patent ID: 6634326
Filing Date: 2003-10-21
Classification: F02B

Abstract:
A two-stroke motor with a fresh-gas supply, comprisinga motor housing which comprises a crank chamber having an inlet opening and a cylinder chamber having an outlet opening, wherein the crank chamber comprises a crank drive and the cylinder chamber comprises a piston, which crank drive and piston are connected by a connecting rod, at least one overflow conduit, a carburetor comprising a carburetor chamber that comprises a fresh-air entrance opening, a fuel entrance opening and a mixture exit opening, a regulatable throttle flap, an inlet conduit connecting the mixture exit opening and the inlet opening of the crank chamber, and a fresh-gas conduit comprising an opening to the overflow conduit, wherein the fresh-gas conduit and the carburetor chamber are connected in such manner that the throttle flap is controllable and the direct supply of fresh gas to the overflow conduit is controlled thereby, wherein the throttle flap can be brought into a first open position in which the throttle flap is fully open and separates the carburetor chamber at least partially into a mixture chamber section with the fuel entrance opening and into a fresh-air chamber section, wherein a starter flap is positioned in close proximity to the fresh-air entrance opening of the carburetor chamber, which starter flap is adjustable so that when it is in a fully open position it is essentially in a plane with the throttle flap when the throttle flap assumes the first open position.