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A fuel injection system for a diesel engine in which an electromagnetically actuated valve determines the initiation and conclusion of injection. A valve of this sort consists of a primary slide valve component 3 which, in its closed position, makes a seating engagement with a tapered valve seat 5 t

A fuel injection system for a diesel engine in which an electromagnetically actuated valve determines the initiation and conclusion of injection. A valve of this sort consists of a primary slide valve component 3 which, in its closed position, makes a seating engagement with a tapered valve seat 5 to close a connecting channel 16 between the injection line 10 and a dumping passage 12. The primary valve component is moved to its open position by an electromagnetically actuated impact bolt 40. In order to avoid problems associated with seat valves, a second electrically operated valve component 6 is provided in a second connecting channel 25 between the high pressure channel 7 and the dumping channel 12.

대표청구항 ▼

The fuel injection mechanism for an internal combustion engine having a casing with a borehole in which a first valve component is guided axially between an open position and a closed position in which the valve component is sealingly seated in a valve seat in the borehole to close a first connectin

The fuel injection mechanism for an internal combustion engine having a casing with a borehole in which a first valve component is guided axially between an open position and a closed position in which the valve component is sealingly seated in a valve seat in the borehole to close a first connecting channel between a high pressure channel extending from an injection pump to an injection nozzle and a dumping passage wherein the valve component is spring biased toward its closed position and moved to its open position by a spring loaded impact bolt shiftable to a retracted position by an electromagnetic actuator, and further comprising a second connecting channel interconnecting said high pressure channel with said dumping passage including an axial borehole in said first valve component, a first transverse passage in said first valve component placing said axial borehole in fluid communication with said high pressure channel and a second transverse passage in said first valve component connecting said axial borehole in fluid communication with said dumping passage and a second valve component operatively disposed in said second connecting channel and shiftable between open and closed positions in which fuel flow is permitted and prevented, respectively, in said second connecting channel.