Distributor-type fuel injection pump

Details Distributor-type fuel injection pump Distributor-type fuel injection pump

1985-12-27

1987-10-06

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123506, 123509, 417372, F02M 3900

Patent

active

046975659

ABSTRACT:
A distributor-type fuel injection pump of the type including a magnetic valve disposed on the head portion of a pump body, wherein a pair of oil seals is disposed on opposite sides of the feed pump, and a bypass passage bypasses the cam chamber and connects a discharge side of the feed pump and an inlet side of the magnetic valve. With this construction, the fuel is delivered without passing through the cam chamber. On the other hand, the lubrication oil is introduced into the cam chamber through clearances between the drive shaft and the bearings and through passageways defined in the drive shaft. The cam assembly or other movable components are lubricated exclusively with the lubrication oil, so that the fuel injection pump operates stably over an extended period of time.

REFERENCES:
patent: 2670684 (1954-03-01), Fagerholt
patent: 3401572 (1968-09-01), Bailey
patent: 4475507 (1984-10-01), Miyaki
patent: 4546749 (1985-10-01), Igashira
patent: 4586480 (1986-05-01), Kobayashi

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