Internal-combustion engines – Charge forming device – With fuel pump
Patent
1985-09-23
1986-06-10
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
With fuel pump
123506, 123503, 123449, 417304, 417289, F02M 5920
Patent
active
045936684
ABSTRACT:
An injection rate controller for a fuel injection pump comprises first and second valve ports formed in a pump housing so as to communicate with each other through a connection aperture, a spool valve movably accommodated within the first valve port and adapted to form communication between the first valve port and a high pressure chamber through a communication aperture under a specific condition of engine drive, a pressure control valve having its cross section contracted gradually in its axial direction and accommodated within the second valve port so as to be reciprocative in synchronism with a plunger, and a spill channel formed in the pump housing for connecting the second valve port on a fuel exhaust side to a pump house, whereby part of high pressure fuel within the high pressure chamber is guided, under the specific condition of engine drive, successively to the communication aperture, first valve port, connection aperture and second valve port, and is caused to escape into the pump house through the spill channel.
REFERENCES:
patent: 3620647 (1971-11-01), Hofer
patent: 3827832 (1974-08-01), Faupel
patent: 4164921 (1979-08-01), Hofer
patent: 4211203 (1980-07-01), Kobayashi
patent: 4271808 (1981-06-01), Kobayashi
patent: 4407253 (1983-10-01), Bauer
patent: 4449504 (1984-05-01), Furuhashi
patent: 4510908 (1985-04-01), Eisele
patent: 4537170 (1985-08-01), Yamada
patent: 4542725 (1985-09-01), Yasuhara
Diesel Kiki Co. Ltd.
Miller Carl Stuart
LandOfFree
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