Robert Boschgmbh

Franz Guggenbichler

Jaroslaw Hlousek

Christian Graspeuntner

Martin Bernhaupt

Peter Mueller

Jaroslav Hlousek

Sven Pasedach

Josef Buergler

Gerhard Unterberger

Markus Schwarzenberger

Armin Hofstaedter

A device for injecting fuel into the combustion chamber of an internal combustion engine with at least one injector includes an injector body equipped with a high-pressure accumulator, a nozzle needle axially displaceably guided in the injector and surrounded by a nozzle chamber, a high-pressure line connecting the high-pressure accumulator to the nozzle chamber, and a resonator line arranged in parallel with the high-pressure line and communicating with the nozzle chamber and opening into the high-pressure accumulator via a resonator throttle. The resonator line and the high-pressure line, at least in their sections adjacent the high-pressure accumulator, are formed in a retaining body which, on its end face, is screwed into the accumulator pipe forming the high-pressure accumulator.

Device for injecting fuel into the combustion chamber of an internal combustion engine

An apparatus for injecting fuel into the combustion chamber of an internal combustion engine includes an injection nozzle () having an axially displaceable nozzle needle () to which the pressure present in a control chamber () when filled with fuel, can be applied in the axial direction to control the opening and closing movements of the needle. The pressure in the control camber () is controlled via a solenoid valve () opening or closing at least one inlet or outlet duct for fuel. A magnetic coil () cooperates with an armature () and a valve-closing member is coupled to the armature () and that can be pressed against a valve seat (). The armature () is disposed in an armature chamber () into which the inlet or outlet duct () opens. The magnetic coil () is covered by a metal protective plate () on the side of the armature chamber.

Apparatus for injecting fuel into the combustion chamber of an internal combustion engine

Within an injection nozzle for the injection of fuels into the combustion chamber of an internal combustion machine the injection nozzle () comprising an axially displaceable valve needle (), which plunges into a control chamber () chargeable with pressurized fuel whose pressure is controllable by a control valve () opening or closing the at lest one inlet or outlet channel for fuel, channels are arranged in the region of the valve needle (), which channels are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively. Also in the region of the control valve () and/or a solenoid actuating the control valve, channels are arranged which are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively.

Injection nozzle for internal combustion machines

Common rail injector

A fuel injection device for internal combustion engines, having a high-pressure collection chamber (common rail), which can be filled with fuel by a high-pressure pump and which communicates via injection lines with injection valves that protrude into the combustion chamber of the engine to be supplied, the opening and closing motions of the injection valves each being controlled by an electrically triggered control valve. The control valve is embodied as a 3/2-way valve which connects a high-pressure conduit, discharging at an injection port of the injection valve, with the injection line or a relief line. On the control valve member of the control valve, a hydraulic work chamber that can be filled with high fuel pressure is provided, which can be opened into a relief conduit in order to adjust the set position of the control valve member of the control valve.

Fuel injection device for internal combustion engines

Growing community of inventors

Kuchl, Austria

Franz Guggenbichler