Internal combustion engine with automatic compression release

Details Internal combustion engine with automatic compression release Internal combustion engine with automatic compression release

1981-01-30

1983-01-11

Myhre, Charles J.

Internal-combustion engines

Starting device

Compression relieving type

123193P, 92162R, 92181R, 277136, F02F 500

Patent

active

043677029

ABSTRACT:
An internal combustion engine is illustrated having an engine block, a cylinder located in the engine block, and a cylinder head defining an end wall of the cylinder. A piston is housed in the cylinder and defines with the cylinder and the cylinder head a combustion space adapted to receive a mixture of fuel and air therein. The piston is reciprocably movable toward the cylinder head to compress a fuel mixture in the cylinder and movable away from the cylinder head, the piston engaging one side of the cylinder as the piston moves toward the cylinder and engaging an opposite side of the cylinder as the piston moves away from the cylinder head. The piston includes an annular groove, and the piston ring is housed in the annular groove, the piston ring including opposite ends being spaced apart and forming a gap. The piston ring is positioned with the gap adjacent that side of the cylinder engaged by the piston as the piston moves away from the cylinder head such that the gap provides for pressure release from the combustion chamber during movement of the piston toward the cylinder head.

REFERENCES:
patent: 2072623 (1937-03-01), Illmer
patent: 2980088 (1961-04-01), Hines
patent: 3667443 (1972-06-01), Currie et al.
patent: 4111104 (1978-09-01), Davison, Jr.
patent: 4154207 (1979-05-01), Brehob

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