Two-stroke engine

A two-stroke engine comprising:

• (i) a cylinder, a combustion chamber, a piston, and a crankcase, and an overflow passage, wherein the combustion chamber is formed in the cylinder, wherein the combustion chamber is bounded by a piston, wherein the piston drives the crankshaft which is mounted rotatably in the crankcase, and wherein the crankcase is connected in the region of the lower dead center of the piston via the overflow passage to the combustion chamber,
• (ii) a carburetor, an intake passage, a mixture passage, an air passage, a main fuel opening, and an idling fuel opening, wherein a section of the intake passage is formed in the carburetor, wherein the intake passage is divided downstream of the carburetor into the air passage and the mixture passage, wherein the mixture passage opens into the crankcase and the air passage supplies combustion air into the overflow passage, and wherein, in the carburetor, at least one main fuel opening and at least one idling fuel opening open into the intake passage,
• (iii) a throttle element, a secondary passage, and a shielding element, wherein the throttle element is mounted pivotably in the carburetor, wherein at least one idling fuel opening opens into the secondary passage, wherein the secondary passage is arranged in the mixture passage downstream of the throttle element, wherein at least a portion of the secondary channel extends in the direction of flow of combustion air from the carburetor to the crankcase, wherein at least a portion of the secondary passage is separated from the mixture passage by a shielding element, wherein an upstream opening is formed in the secondary passage in its upstream portion, wherein air flows through the mixture passage from upstream to downstream in relation to the direction of combustion air flow in the mixture channel from the carburetor to the crankcase,
• wherein, in the idling position, the throttle element is arranged in an approximately flush manner to the upstream entry opening of the secondary passage, wherein the throttle element has an opening which, in the idling position of the throttle element, is arranged in the region of the entry opening of the secondary passage such that combustion air from the region upstream of the throttle valve can enter the secondary passage through the entry opening in the throttle element, and wherein the entry opening in the throttle element connects the secondary passage to the region of the intake passage which is located upstream of the throttle element.