Fuel injection arrangement for internal combustion engines

Details Fuel injection arrangement for internal combustion engines Fuel injection arrangement for internal combustion engines

1994-06-01

1995-10-17

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123467, 123446, F02M 5702, F02M 4700, F02M 6304

Patent

active

054581036

ABSTRACT:
A fuel injection arrangement for internal combustion engines, having an injection unit embodied as an open nozzle, in which a pump piston embodied as a stepped piston defines two work chambers in a cylinder bore is proposed, by which work chambers a pump work chamber, defined by an annular end face in the pump piston portion of smaller diameter, can be made to communicate with a fuel supply line and an injection port into the combustion chamber of the engine to be supplied. The other work chamber, at least indirectly defined by the larger face end of the pump piston, can be made to communicate according to the invention with a pressure reservoir chamber or a relief line via a pressure line that includes a 3/2-way valve; the supply stroke motion of the pump piston is brought about by the delivery into the work chamber of the fluid under high pressure located in the pressure reservoir chamber.

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