Overhead vertical camshaft engine with external camshaft drive

Details Overhead vertical camshaft engine with external camshaft drive Overhead vertical camshaft engine with external camshaft drive

1998-03-24

1999-11-23

Kwon, John

Internal-combustion engines

Lubricators

Crankcase, pressure control

123195HC, F01M 100

Patent

active

059881356

ABSTRACT:
A single cylinder, internal combustion engine with an engine housing in which the overhead camshaft and crankshaft are rotatably supported. The housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. The inventive engine further provides for the mounting of flywheels within the crankcase cavity in conjunction with an external, lightweight fan for engine housing cooling, as well as employs a cast in valve seat for the overhead valve assemblies.

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