Rotary valve engine with tandem power and supercharger sections.

摘要

Four power cylinders within an engine and/or cylinder block are distributed around a central bore containing a rotary valve whose axis of rotation is parallel to that of each of the cylinders. Supercharger cylinders are axially aligned with the power cylinders and pistons within the power cylinders are connected by a rod to pistons within the supercharger cylinders and driven by a common power means. The power means drives alternate cylinders around the valve in phase and intermediate cylinders 180 DEG out of phase. Air intake means through the rotary valve is fed into ports of opposite supercharger cylinders through a Y-shaped passage. Compressed air or a fuel mixture from the supercharger cylinders is fed through a passageway to the power cylinders in intake phase. If a four stroke cycle engine is involved, the passage may be Y-shaped connecting two supercharger cylinders to a single power cylinder. Otherwise, a pair of enlarged supercharger cylinders feed a pair of power cylinders to provide high pressure input in a two stroke cycle engine. A passageway through the rotary valve connects that power cylinder being exhausted to exhaust. Firing means are preferably provided in each cylinder and the cylinder ports are closed off by the rotary valve, except when confronted by passages. Fuel for combustion may be injected either in the passageway conveying compressed air from the supercharger cylinders into the power cylinder or within the power cylinder itself, for both spark ignition and compression ignition engine.