Patent ID: 6234120
Filing Date: 2001-05-22
Classification: F02B

Abstract:
A two-stroke internal combustion engine comprising:a cylinder having a cylinder wall and a first end and an opposite second end;a first piston and a second piston disposed in the cylinder, the first piston and second position being movable away and towards one another;the cylinder having an inlet defined therein;the cylinder having a first crank-case for mixing fuel from a carburetor, the first crank-case being at the first end of the cylinder and a second crank-case at the second end of the cylinder, the carburetor being in operative engagement with the first crank-case;the cylinder wall having an induction port and an exhaust port defined therein;the cylinder having a passage defined therein, the passage extending from the induction port to the second crank-case;the first crankshaft being disposed in the first crank-case, the first crankshaft being connected to the first piston via a first piston rod;a second crankshaft being disposed in the second crank-case, the second crankshaft being connected to the second piston via a second piston rod, the first crankshaft being interconnected with the second crankshaft so that both the first and the second pistons are simultaneously movable towards a bottom center position and towards a top center position;the second crank-case being in fluid communication with the induction port via the passage;the exhaust port being positioned to cooperate with the first piston of the first crank-case;a pipe extending between the first crank-case and the second crank-case for providing a supply of a fuel mixture from the first crank-case to the second crank-case, the supply of the fuel mixture from the first crank-case to the second crank-case being limited to only via the pipe; anda check valve disposed between the first crank-case and an inlet end of the pipe.