Two cycle engine with augmented intake ports

Details Two cycle engine with augmented intake ports Two cycle engine with augmented intake ports

1980-06-30

1982-10-12

Burns, Wendell E.

Internal-combustion engines

Two-cycle

Rear compression

123 73PP, 123 73A, 123 74R, F02B 3304

Patent

active

043533337

ABSTRACT:
A two cycle engine has a cylinder, a piston axially slidably mounted in said cylinder, and through the wall of the cylinder an intake port, exhaust port, and scavenging port. These ports are respectively connected to intake, exhaust, and scavenging passages. An auxiliary intake passage opens through the cylinder wall, circumferentially spaced from the other intake passage so as to leave an axially-extending side-support surface to permit of an enlarged total intake port area without permitting the piston to tilt or otherwise wander from its true path, thereby to reduce piston clatter and wear, and to improve engine performance.

REFERENCES:
patent: 2816529 (1957-12-01), Flatz et al.
patent: 3905341 (1975-09-01), Boyesen
patent: 4121552 (1978-12-01), Mithuo et al.
patent: 4178886 (1979-12-01), Uchinishi
patent: 4235206 (1980-11-01), Boyesen

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