Fuel injection system for a combustion chamber of a reciprocatin

Details Fuel injection system for a combustion chamber of a reciprocatin Fuel injection system for a combustion chamber of a reciprocatin

1985-11-22

1987-05-05

Cox, Ronald B.

Internal-combustion engines

Solid fuel

F02D 1904

Patent

active

046623159

ABSTRACT:
The mechanically driven pump is provided with a delivery chamber which communicates with an annular groove about a valve needle of the injection valve to deliver pressurized hydraulic medium to prevent an inflow of liquid fuel between the valve needle and the injection valve body. The hydraulic pressure medium of the mechanically driven pump also drives a reciprocating piston in the hydraulic pump used to pump the fuel to the injection valve and, thus, also provides a barrier to the passage of liquid fuel between the reciprocating piston and the surrounding wall of the pump.

REFERENCES:
patent: 2625141 (1953-01-01), Berlyn
patent: 4052963 (1977-10-01), Steiger
patent: 4070997 (1978-01-01), Steiger
patent: 4601269 (1986-07-01), Kato

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