Internal combustion engine exhaust control valve

Details Internal combustion engine exhaust control valve Internal combustion engine exhaust control valve

1993-07-19

1995-03-28

Hart, Douglas

Valves and valve actuation

Rotary valves

Butterfly

60288, 2513355, F16K 122, F16K 3144

Patent

active

054010012

ABSTRACT:
The valve shaft passes through a journal bearing in the wall of the valve body to an actuating lever attached to the shaft on the outside of the valve body. This journal bearing is sealed by an arrangement of several parts to prevent escape of exhaust gases. These parts include a bellows and ceramic thrust washers. By making the valve shaft axis non-perpendicularly intersecting the axis of the valve body wall, the entire circumference of the valve blade can be sealed to the valve body wall when the valve is closed.

REFERENCES:
patent: 3782685 (1974-01-01), Gallagher
patent: 4380246 (1983-04-01), Casale
patent: 4546662 (1985-10-01), Tremblay

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