Patent ID: 6729275
Filing Date: 2004-05-04
Classification: F02B,F02F,F02M,Y02T

Abstract:
A two-stroke internal combustion engine with crankcase scavenging, with an exhaust passage controlled by a piston and at least two first transfer passages and at least one second transfer passage, each with a transfer window into a cylinder chamber and a crankcase-side window for communication between the cylinder chamber and a crankcase, the transfer windows of the first transfer passages being controlled by the upper edge of the piston, and the crankcase-side window of the second transfer passage being disposed in a region of a cylinder wall that is swept by a piston skirt of the piston, wherein for control of the second transfer passage the piston skirt of the piston is provided with a control opening in the area of the crankcase-side window of the second transfer passage, wherein said cylinder wall comprises at least one recess, wherein at least one first injector opens into said recess arranged in close vicinity to said transfer window of said second transfer passage, and wherein a narrow passage is arranged between said recess and said second transfer passage.