Exhaust manifold device

Details Exhaust manifold device Exhaust manifold device

1984-09-24

1989-03-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

13754317, 13754321, F01N 330

Patent

active

048152846

ABSTRACT:
There is disclosed an assembly for mounting on an exhaust manifold of an internal combustion engine to induct air into the exhaust manifold during the low pressure portion of the exhaust pulses of the engine. The assembly includes a stem section adapted to be connected to the exhaust manifold which includes a stem passage. A hollow cylindrical member is connected to the stem section to form a valve chamber which houses an improved valve arrangement. The valve arrangement includes a coiled spring which extends into the valve chamber, a valve seat, and a valve member disc disposed between the coiled spring and the valve seat. The disc is supported by the coiled spring which urges the disc against the valve seat for closing the valve in the absence of manifold pressure. During the negative pressure portions of the exhaust pulse waves, the disc is displaced away from the valve seat for opening the valve and inducting air into the manifold. During the positive pressure portions of the exhaust pulse waves, the disc is displaced toward and seats against the valve seat for closing the valve. The assembly further includes a pump means extending over the valve chamber for pumping air into the opened valve during the negative pressure portions of the exhaust pulse waves.

REFERENCES:
patent: 1828967 (1931-10-01), Hewitt
patent: 3390520 (1968-07-01), Mattson
patent: 3455106 (1969-07-01), Flint
patent: 3456684 (1969-07-01), Sochting
patent: 3877222 (1975-04-01), Scherenberg

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