Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-10-11
1997-09-23
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
1375143, 123506, F02M 4100
Patent
active
056693567
ABSTRACT:
A two part pressure unloading delivery valve for a fuel injection pump comprises an annular valve member within which is slidable a plunger. The valve member is biased into engagement with a valve seat by means of a spring and is lifted from the seat by fuel under pressure supplied by the pump. The spring biases the plunger in the direction away from the seat and following closure of the valve member the plunger is moved in the direction towards the seat to allow relief of fuel under pressure from the pipeline connecting the valve with a fuel injection nozzle. After a predetermined movement of the plunger against the spring, damping means in part defined by a piston on the plunger, acts to damp the further movement of the plunger.
REFERENCES:
patent: 2554390 (1951-05-01), Stevenson
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patent: 4246876 (1981-01-01), Bohringer
patent: 4478189 (1984-10-01), Fenne
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patent: 4926902 (1990-05-01), Nakamura
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patent: 5050636 (1991-09-01), Sagawa
patent: 5295469 (1994-03-01), Kariya
patent: 5339785 (1994-08-01), Wilksch
patent: 5390692 (1995-02-01), Jones
Patent Abstracts of Japan, vol. 10 No. 153 (M-484) 3 Jun. 1986.
Fuller Trevor Alan
Wall Robin Christopher
Lucas Industries
Miller Carl S.
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