Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-06-19
1976-07-06
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123139AV, 417279, 417507, F02M 3900
Patent
active
039676064
ABSTRACT:
A fuel pump for an internal combustion engine of the type wherein cyclic pressure fluctuations are produced in the engine crankcase chamber during engine operation by the reciprocating motion of an engine piston. The pump embodies fuel pumping means including a pulsatory pumping member or pulsator, such as a diaphragm, and is mounted directly on the engine with the pumping pulsator exposed directly to the engine crankcase chamber in such a way that the chamber pressure fluctuations drive the pulsator in its pulsating pumping motion to pump fuel from the fuel inlet to the fuel outlet of the pump. Also embodied in the pump are a novel fuel pressure regulating valve for maintaining a substantially constant fuel outlet pressure regardless of engine speed and an automatic fuel shut-off valve for blocking fuel leakage through the pump under the action of head pressure or other forces when engine operation ceases.
REFERENCES:
patent: 2383250 (1945-08-01), Hewitt
patent: 2707051 (1955-04-01), Mailhot
patent: 3425403 (1969-02-01), May
patent: 3698368 (1972-10-01), Yamamoto
patent: 3800770 (1974-04-01), Baribeau
patent: 3805758 (1974-04-01), May
Myhre Charles J.
O'Connor Daniel J.
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