Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-08-06
1976-04-20
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
251 611, F02M 3900
Patent
active
039511200
ABSTRACT:
A diaphragm-controlled pressure control valve assembly is provided, especially for fuel injection systems in internal combustion engines, in which a measuring member, disposed within the suction tube, is moved by aspirated air against a resetting force. The resetting force is supplied by a pressurized fluid, delivered through a pressure line, which continually acts upon the measuring member. The pressure, which is normally constant, can be arbitrarily changed by pressure control valves. At least one of the pressure-control valves is embodied as a flat-seat valve in which the pre-load of its movable valve member can be changed in dependence on parameters. The movable valve member is constituted by a first diaphragm on whose side pointing away from a fixed valve seat there is disposed a second diaphragm in positive contact with the first diaphragm. The second diaphragm is preferably provided with a relief bore. In a preferred embodiment, two pressure-control valves of similar construction are provided, each including two diaphragms.
REFERENCES:
patent: 3521850 (1970-07-01), German
patent: 3680535 (1972-08-01), Eckert
patent: 3728993 (1973-04-01), Eckert
patent: 3730155 (1973-05-01), Knapp
patent: 3791359 (1974-02-01), Eckert
patent: 3835828 (1974-09-01), Knapp
patent: 3842813 (1974-10-01), Eckert
patent: 3861642 (1975-01-01), Maddocks
Greigg Edwin E.
Myhre Charles J.
O'Connor Daniel J.
Robert Bosch G.m.b.H.
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