Four-cycle engine

Details Four-cycle engine Four-cycle engine

1994-02-22

1995-06-06

Kamen, Noah P.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

123 4165, 123 4169, F02B 2300

Patent

active

054212979

ABSTRACT:
There is disclosed a four-cycle engine in which a crankshaft and a cam shaft are disposed generally parallel to each other, and an intake port and an exhaust port are formed in a cylinder head. The intake port and the exhaust port are arranged in such a manner that a line passing through the centers of the intake port and the exhaust port is non-parallel to the axis of the crankshaft. With this arrangement, an intake passage and an exhaust passage can be greatly shortened, and therefore intake efficiency as well as exhaust efficiency can be enhanced, thereby enhancing the performance of the engine. In an air-cooled engine, the overheating of the engine is greatly restrained.

REFERENCES:
patent: 3500805 (1970-03-01), Reisacher
patent: 5000126 (1991-03-01), Isaka et al.
patent: 5042440 (1991-08-01), Joseph

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