Rotational valve for two stroke engine
OwnerOnur Gurlerinventor
Life of this patent
Estimating the term…
Abstract
A two stroke internal combustion engine having a piston reciprocating in a cylinder between TDC and BDC positions to influence a crank shaft with help of a connecting rod. A Rotational Valve (RV) associated with the cylinder body selectively altering the timing and duration of opening and closing of cylinder intake and exhaust ports. The said rotational Valve may be associated with the said crank shaft through a drive train assembly. Drive train assembly may control the Rotational Valve through electronic or mechanical means.
Claims19
A two stroke internal combustion engine, having an intake port, an exhaust ports, and a rotational valve for controlling the timing of intake and exhaust ports, comprising:
- an engine block forming at least one cylinder with a central axis;
- a piston adapted to reciprocate linearly within said at least one cylinder along said central axis between a top dead center position and a bottom dead center position;
- a crank shaft assembly mounted within said engine block, said crank shaft assembly including a drive shaft with a drive shaft axis and an eccentric connecting rod pin with a pin axis whose axis to be different from drive shaft axis;
- the intake port positioned and adapted to permit ingress of air and fuel mixture into said cylinder and the exhaust port positioned and adapted to permit egress of exhaust gases from said cylinder;
- an upper section of the cylinder, which is separated by a reciprocating piston to accommodate a spark plug to ignite the air & fuel mixture and perform the combustion stage;
- an airtight bottom section of the cylinder, wherein the cylinder is separated by the piston;
- a transfer port is adapted into the cylinder block to let compressed air in the bottom section of the cylinder to the top section of the cylinder;
- and
- a rotational valve, adapted to prevent loss of air-fuel mixture, comprises a body, said rotational valve further comprises an opening on said body;
- wherein said rotational valve is configured as an elongated ring positioned in a dedicated interstitial space between the engine block and cylinder housing (102), said elongated ring further positioned at Bottom Dead Center between the ports and a combustion chamber, and wherein said rotational valve rotates about a cylinder axis at variable angular speed continuously in about 360°, and wherein said rotational valve is further configured to transiently align with the intake port to permit ingress of a mixture of fuel and air into the cylinder during intake cycle, and wherein said rotational valve is further configured to transiently align with the exhaust port to permit egress of exhaust gases from the cylinder, thereby controlling the intake and exhaust port opening timing and durations.
A rotational valve, said rotational valve adapted for use in a two stroke internal combustion engine having an intake port, an exhaust port, a cylinder and an engine block, the rotational valve adapted for controlling the timing of the intake and exhaust ports, said rotational valve comprising,
- a body,
- an opening, said body having said opening,
- said rotational valve configured as an elongated ring adapted to be positioned outside the cylinder in a dedicated interstitial space, said rotational valve further adapted to be positioned at Bottom Dead Center between the intake and exhaust ports and a combustion chamber,
- wherein said rotational valve is yet further adapted to rotate about a cylinder axis of the engine at variable angular speed continuously in about 3602, and wherein said opening of said rotational valve is configured to transiently align with the exhaust port to permit egress of exhaust gases from the cylinder, thereby controlling the intake and exhaust port opening timing and durations.
Dependencies are inferred from the claim text.