Electromagnetically operated valve

Details Electromagnetically operated valve Electromagnetically operated valve

1993-09-01

1994-08-30

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123458, F02M 3704

Patent

active

053417879

ABSTRACT:
An electromagnetically operated valve for the clocked feeding of volatile fuel constituents out of the free space of a fuel tank into the intake manifold of an internal combustion engine is disclosed. The valve is provided with at least one intake port and at least one outlet port, a main valve seat and an auxiliary valve seat connected parallel to the main valve seat being provided between the intake and the outlet ports. A corresponding main closing element and an auxiliary closing element are provided, the main closing element having a movable mass m.sub.I and the auxiliary closing element having a movable mass m.sub.II. The closing elements sealingly contact the corresponding valve seats in a sealed (off) position through the force of at least one valve spring at any one time. The main closing element, when actuated, is shiftable to an open position by a resultant force F.sub.resI and the auxiliary closing element is likewise shiftable to an open position by a resultant force F.sub.resI. The ratio F.sub.resI /m.sub.I is smaller than ratio F.sub.resII /m.sub.II.

REFERENCES:
patent: 4901702 (1990-02-01), Beicht
patent: 4944276 (1990-07-01), House
patent: 4953514 (1990-09-01), Beicht
patent: 5060621 (1991-10-01), Cook
patent: 5103794 (1992-04-01), Shiraishi
patent: 5216998 (1993-06-01), Hosoda

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