Internal combustion engine

Details Internal combustion engine Internal combustion engine

1976-03-08

1977-10-11

Lazarus, Ronald H.

Internal-combustion engines

Valve

Rotary

123 32B, 123191A, 123193H, 92144, F02B 2300, F01B 3108

Patent

active

040529720

ABSTRACT:
A heat insulation construction for gasoline engines comprising a piston, a sub-piston projecting on the top of the piston. A cylinder head is secured to the top of a cylinder and has a recess into which the sub-piston may be inserted at a position near the top dead center of the piston stroke to form two independent combustion chambers. An ignition plug is provided in one of the combustion chambers in the cylinder head. An intake passage and exhaust passage are provided in the cylinder head. A heat insulating air layer is provided in the top portion of the piston and sub-piston, and a heat insulating air layer is provided on the inner wall of the cylinder head, which is formed by casting hollow structures made of steel plates in the cylinder head.

REFERENCES:
patent: 1559439 (1925-10-01), Kapraun
patent: 1708428 (1929-04-01), Moore
patent: 2007767 (1935-07-01), Moore
patent: 2244008 (1941-06-01), Hazen
patent: 2983268 (1961-05-01), Heintz
patent: 3473444 (1969-10-01), Leffers
patent: 3855986 (1974-12-01), Wiss
patent: 3929107 (1975-12-01), Renger
patent: 3990234 (1976-11-01), Kajitani

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