Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1991-06-21

1992-02-11

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123496, 123373, F02M 4100

Patent

active

050867423

ABSTRACT:
For the sake of improving quiet operation during idling and at low partial load by lengthening the injection duration, a fuel injection pump for internal combustion engines has a relief conduit originating in a pump work chamber, the relief conduit including a throttle and being blockable at upper partial load, full load and openable by a control slide. The relief conduit is controlled by a pressure maintenance valve, the opening pressure of which can be adapted from outside to the opening pressure of injection nozzles. The control slide is controlled by a centrifugal governor in such a manner that at idling and lower partial load. The control slide is shifted by the pressure in a fuel low-pressure chamber into its operating position that uncovers the relief conduit, and at upper partial load, full load and starting, the control slide is disconnected from the low-pressure chamber, so that it can drop back into its basic position that blocks off the relief conduit.

REFERENCES:
patent: 4164921 (1979-08-01), Hofer
patent: 4327696 (1982-05-01), Kobayashi
patent: 4407253 (1983-10-01), Bauer
patent: 4458648 (1984-07-01), Braun
patent: 4510908 (1985-04-01), Eisele
patent: 4548184 (1985-10-01), Laufer
patent: 4593668 (1986-06-01), Yuzawa

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