Non-circular poppet valves for internal combustion engine cylind

Details Non-circular poppet valves for internal combustion engine cylind Non-circular poppet valves for internal combustion engine cylind

1987-10-15

1988-12-13

Nelli, Raymond A.

Internal-combustion engines

Valve

Valve head cooperates with manifold

123188A, 123188AA, 251356, F01L 310

Patent

active

047902728

ABSTRACT:
A new internal combustion engine cylinder and valve assembly includes one or more valve openings and valves having a non-circular periphery. The non-circular valve openings and valves increase the flow-through area across the engine intake and exhaust valves, increasing the air quantity available in the cylinder assembly for combustion. The increased air quantity available through the non-circular valve opening and valves reduces the throttling loss experienced by the cylinder assembly, increases the extent of combustion of the air-fuel mixture introduced into the cylinder assembly, reduces engine pumping losses, increases the power output of the engine, reduces the amount of residual hydrocarbons and carbon monoxide present in the exhausted gases, and provides overall a more efficient internal combustion engine cylinder and valve assembly, particularly where such engines are turbocharged.

REFERENCES:
patent: 223374 (1880-01-01), Wodre
patent: 1624992 (1927-04-01), Spillman
patent: 4164209 (1979-08-01), Grands

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