Forced exhaust system for increasing engine efficiency

Abstract

A forced exhaust system for increasing engine efficiency has an engine with at least one cylinder. The cylinder has a combustion chamber and a moveable piston. An intake port provides air/fuel/oil to the combustion chamber. An exhaust port is connected to the combustion chamber to remove exhaust gasses and uses an exhaust valve to control the exhaust timing. An exhaust device is connected to the exhaust port and lowers the pressure at the exhaust port which forcefully removes the products of combustion from the combustion chamber after ignition when the exhaust valve is open. By applying a vacuum to the exhaust port, the exhaust gases are removed quickly and utilizes more of the compression stroke than is possible in conventional engines. In this way, the user is able to control the intake and exhaust pressures independently in a two-stroke engine.

Dependencies are inferred from the claim text.