Robert Boschgmbh

Dietmar Uhlmann

Dieter Kienzler

Jean-Luc Loutrage

Friedrich Boecking

Giovanni Ferraro

Werner Scholten

Hrvoje Lalic

Luiz-Alexandre Colodel

Alexander Wernau

Uwe Bruetsch

Violaine Chassagnoux

Waldemar Kiel

Giuseppe Di Giandomenico

Jens-Peter Nagel

Vittorio Caroli

The invention relates to a turbine () having an impeller () arranged in a housing (). The turbine () has an inflow region () and an outflow region () and a working medium flows through said turbine during operation. The working medium flows into the inflow region (), along a front side () formed on the impeller () and subsequently out of the outflow region (). There is a pressure drop at the front side () between the inflow region () and the outflow region (). A pressure distributer () is arranged on the rear side () of the impeller (), opposite the front side (). The pressure distributer () comprises a slide ring (), which cooperates with the rear side () of the impeller () and thereby forms a vapour-lubricated throttle. A first flow path () runs through the throttle, wherein the throttle hydraulically divides the rear side () into a first region () and a second region (). The first region () borders the inflow region (), and the second region borders a pressure chamber (). During operation, the inflow region () is applied with a higher pressure than the pressure chamber (). The slide ring () is axially moveable. A sealing ring () arranged in a groove () cooperates with the slide ring (). A second flow path () runs from the inflow region () to the pressure chamber () between the groove () and the slide ring (). The second flow path () can be closed by the sealing ring (). The sealing ring () can be moved in the groove () in a defined manner.

Turbine with pressure distributer

The invention relates to a fuel injector comprising an actuator modulearranged in a holding body, wherein the holding bodyis braced by means of a tension nutto a nozzle bodyby means of at least one interposed intermediate body designed as a throttle plate, wherein the throttle plateis penetrated by at least one high pressure channel, an inflow channelhaving an inflow throttle, and an outflow channelhaving an outflow throttle, and wherein a valve actuated by the actuator module, said valve having at least one valve pinand a sealing sleeve, is arranged between the actuator moduleand the throttle plate, forming a leakage chamberfacing the throttle plate. According to the invention, a fuel injector is provided, wherein the leakage discharge out of the leakage chamberis ensured without impairing the tightness of the fuel injector in the areas adjacent to the throttle plate. This is achieved in that a horizontal leakage outlet channel, which extends from the cylindrical outer circumference of the throttle plateto a region underneath the leakage chamberand is hydraulically connected to the leakage chamberby way of a leakage channel, is recessed in the throttle plate

Fuel injector for an internal combustion engine

A fuel injection valve () for internal combustion engines, having a housing () in which a nozzle body () is at least indirectly axially clamped against a holding body () by means of a clamping nut (), wherein the clamping nut () radially surrounds the nozzle body (), and wherein a threaded connection () between the holding body () and the clamping nut () is formed between the clamping nut () and the holding body () in a region which is axially spaced apart from the nozzle body (). The threaded connection () comprises at least two toothing regions () which have different threaded dimensions and are arranged axially one behind the other in the longitudinal direction of the housing ().

Fuel injection valve for internal combustion engines

The invention relates to a fuel injector with a holding body and a nozzle body which are joined together and which accommodate a coupler module which has a coupler body enclosed by a spring sleeve. The spring sleeve is open in a circumferential direction at a seam thereof which extends in the longitudinal direction. Either the wall thickness of the spring sleeve varies in the longitudinal direction, or a width of at least one hole geometry in the sheathing of the spring sleeve varies in the longitudinal direction.

Spring sleeve for fuel injector

An actuator unit suitable for actuating a fuel injection valve of an injection system for internal combustion engines is comprised of a piezoelectric actuator and a hollow body embodied in the form of a spring. Embodying the hollow body according to the present invention can extend the service life of the actuator unit.

Actuator unit for a piezo-controlled fuel injection valve

An actuator unit which is suitable for actuating a fuel injection valve of an injection system for internal combustion engines includes a piezoelectric actuator and a hollow body embodied as a spring. The service life of the actuator unit can be improved by designing the hollow body to eliminate or minimize bending stresses on the piezoelectric actuator.

Actuating unit for a piezo-electrically controlled fuel injection valve

A piezoelectric actuator module having at least one piezoelectric component, one actuator foot, and one actuator head is surrounded by an axially extending bush. For sealing the piezoelectric actuator module in the axial direction, the actuator foot is adjoined by a diaphragm, which extends essentially in the radial direction, is joined to the bush, and has a cross section with various radii of curvature.

Piezoelectric actuator module, and method for assembling a piezoelectric actuator module

A fuel injection valve for internal combustion engines, with a housing that contains a moving valve element whose movement counter to the elastic force of a spring element controls the fuel supply to the combustion chamber of the engine. The spring element has the form of a cylindrical sleeve whose wall contains openings at a number of locations that allow the spring element to be elastically deformed in the longitudinal direction.

Fuel injection valve

A piezoelectric actuator module has at least one piezoelectric element, one actuator foot and one actuator head, and is surrounded by an axially extending sleeve. To seal off the piezoelectric actuator module in the axial direction, the actuator foot is adjoined by a diaphragm that extends essentially in the radial direction and is connected to the sleeve.

Piezoelectric actuator module

A valve for controlling fluids, which has a plurality of components that are disposed in succession in the axial direction of the valve. On at least one of the components, a male thread is embodied in order to enter into engagement with a female thread of a lock nut. The lock nut serves to brace the components of the valve. A sealing element is disposed between the female thread of the lock nut and the male thread of the component.

Growing community of inventors

Korb, Germany

Dietmar Uhlmann