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A fuel injection device with a pump plunger which is driven in reciprocation and a working space which is enclosed by the pump plunger, and is connected to an injection valve connected directly to the pump housing. To control the fuel injection quantity and the injection instant, a solenoid valve is

A fuel injection device with a pump plunger which is driven in reciprocation and a working space which is enclosed by the pump plunger, and is connected to an injection valve connected directly to the pump housing. To control the fuel injection quantity and the injection instant, a solenoid valve is provided which is arranged in a fuel passage that is connected to the pump working space and serves for the filling and/or relief of the pump working space. To reduce the volumes subjected to the high pressure, the fuel passage is arranged in such a way that the fuel passage intersects the cylinder bore which accommodates the pump working space, and the solenoid valve is arranged at the entry of this passage.

대표청구항 ▼

A fuel injection device for internal combustion engines, with a pump plunger (8) which in a cylinder bore (11) delimits a pump working space (12) and is driven in reciprocation, and with a delivery line (15) which connects the pump working space (13) to an injection valve (16), an injection valve me

A fuel injection device for internal combustion engines, with a pump plunger (8) which in a cylinder bore (11) delimits a pump working space (12) and is driven in reciprocation, and with a delivery line (15) which connects the pump working space (13) to an injection valve (16), an injection valve member which is opened counter to a closing force (18) under an injection pressure of the fuel pumped out of the pump working space (13) via the delivery line (15), and with fuel passage (22, 26, 32, 33) leading from the pump working space (13) via an electrically controlled valve (31) to a fuel reservoir space at a lower pressure than the injection pressure, a portion of the fuel passage (22) on a part of its circumferential wall is connected to an interspace (62) formed between this part of the cylinder bore (11) and the lateral surface of the pump plunger (8), said interspace is permanently connected to the pump working space and the entry into that part of the fuel passage (22) which is connected to the pump cylinder is controlled by the valve member (30) of the electrically controlled valve (31).