Fuel injection pumping apparatus

Details Fuel injection pumping apparatus Fuel injection pumping apparatus

1992-06-24

1993-01-19

Bertsch, Richard A.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417462, 123450, 123502, F02M 3902, F02D 100

Patent

active

051802902

ABSTRACT:
A fuel injection pumping apparatus for supplying fuel to a compression ignition engine has a low pressure pump which supplies fuel to a high pressure pump by way of a throttle. The high pressure pump has a piston for varying the timing of delivery of fuel. A first fixed orifice connects the outlet of the low pressure pump to the cylinder containing the piston and a second fixed orifice connects the cylinder with a drain by way of a variable orifice. In parallel with the second fixed orifice is a bypass valve including a valve member responsive to the pressure applied to the piston and which with increasing pressure opens to allow fuel to escape through a further fixed orifice from downstream of the second fixed orifice.

REFERENCES:
patent: 4080109 (1978-03-01), Green
patent: 4138981 (1979-02-01), Green
patent: 4619238 (1986-10-01), Hain

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