Robert Boschgmbh

Günter Dantes

Detlef Nowak

A fuel injector for fuel-injection systems of internal combustion engines includes an actuator, a valve needle, which is able to be activated by the actuator to actuate a valve-closure member, which, together with a valve-seat surface formed at a valve-seat member, forms a sealing seat; and at least one spray-discharge orifice which is formed in the valve-seat member. At a downstream end of the fuel injector, a flameproofing screen is positioned, which shields the spray-discharge orifices from the combustion chamber of the internal combustion engine.

Fuel-injection valve

A fuel injector () is provided with a magnetic coil (), which cooperates with an armature () acted upon by a restoring spring (), the armature forming an axially movable valve part together with a valve needle (). A valve-closure member (), which forms a sealing seat with a valve-seat member (), is provided at the valve needle (). A flange (), which penetrates the armature () through an opening () of the armature () and which is connected to the valve needle () by force-locking, has at least one radial fuel channel () with whose aid an inner chamber () of the fuel injector () is able to be connected to a recess () of the valve needle () upon actuation of the fuel injector ().

Fuel injection valve

A fuel injector with a magnetic coil, which cooperates with an armature acted upon by a restoring spring, the armature forming an axially movable valve part together with a valve needle. A valve-closure member, which forms a sealing seat with a valve-seat member, is provided at the valve needle. An inner pole and an outer pole form a magnetic circuit with the magnetic coil. A membrane is positioned at an inflow-side end face of the inner pole, which includes at least one orifice, which is covered by the inner pole in the dosed state of the fuel injector.

A fuel injector for fuel-injection systems of internal combustion engines includes an actuator, a valve needle, which is able to be activated by the actuator to actuate a valve-closure member, which, together with a valve-seat surface formed at a valve-seat member, forms a sealing seat; and a plurality of spray-discharge orifices which is formed in the valve-seat member. At a discharge-side end of the fuel injector, a nozzle-orifice cover is positioned, which shields the spray-discharge orifices from the combustion chamber of the internal combustion engine.

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Eberdingen, Germany

Günter Dantes