Robert Boschgmbh

Elringklinger Ag

Siamend Flo

Martin Maier

Klaus Joos

Thorsten Allgeier

Jurij Giesler

Heinz Siegel

Guenther Hohl

Olaf Schoenrock

Dietmar Uhlenbrock

Klaus Lang

Joerg Heyse

Winfried Langer

Stefan Arndt

Frank Nitsche

Andreas Plisch

Walter Maeurer

Oliver Albrecht

Berthold Pfuhl

Ekrem Cakir

Peter Ropertz

Alexander Schenck Zu Schweinsberg

Heiko Jahn

Andreas Gutscher

Peter Schenk

Rainer Wilms

Michael Bauer

Juergen Koreck

Klaus Hocker

Walter Schuhmacher

Gerd Teike

Volkmar Goldschmitt

Joachim Zumbraegel

Juergen Arnold

Martin Laich

Cornelia Giessler

Bernd Koch

Andreas Krause

Andrea Krusch

Kerstin Koch

Bruno Holzwarth

Victorio Toscano

Roman Grzeszik

Ruthard Bonn

Andreas Utler

Lena Maren Baessler

Markus Hilligardt

Hans-Werner Schlingensief

Clemens Schefzik

Franz Elischer

Markus Schaumann

Thomas Jakisch

Tim Reule

Peter Andretzky

Tamim Latif

Stefan Woerner

Stefan Pfuhl

Andreas Herzig

Andreas Altmann

Michael Lenz

Henry Barbier

Thomas Jackisch

A piston pump, in particular a high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston, and a delivery chamber that is delimited at least by the pump housing and the pump piston. The piston pump further includes a seal configured to seal the delivery chamber and a separate guide element configured to guide the pump piston. The seal and the guide element are arranged between the pump piston and the pump housing. The seal is formed as a plastic ring with a substantially sleeve-shaped base portion.

Piston pump

A piston pump, in particular high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston and a conveying chamber defined at least by the pump piston and the pump housing. A seal for sealing the conveying chamber and a separate guide element for guiding the pump piston may be arranged between the pump piston and the pump housing. The seal is designed as a metal sleeve, and may have a radially outwardly projecting web.

Piston pump, particularly a high-pressure fuel pump for an internal combustion engine

The invention relates to a method for operating a piston pump () which is driven by means of a coil () of an electromagnet. A piston () of the piston pump () can be moved in a cylinder () for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil () during a switch-on period such that a current flows through the coil () and the piston () is accelerated, said voltage being applied by means of an actuation device (). A time curve of an electric state variable (I, U) of the coil () is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston () against a stop. The invention further relates to an actuation device and a piston pump.

Operating method and actuation device for a piston pump

The invention relates to a piston pump, in particular for injection systems for motorized two-wheeled vehicles and/or for motorized three-wheeled vehicles, having a compression chamber, a piston, an inlet valve, and an outlet valve. A fluid can flow into the compression chamber via the inlet valve, and the fluid can flow out of the compression chamber via the outlet valve. A region in the form of a channel, which is arranged fluidically upstream of the outlet valve, in particular directly upstream of the outlet valve, has a cross-section which is reduced compared to a compression chamber region at a distance from the outlet valve. The invention is characterized in that a piston end face facing the channel has a region which can be immersed into the channel.

Piston pump comprising a piston with a profiled front face

A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston slidably accommodated in the pump cylinder. The piston fuel pump has a supporting and sealing assembly for the pump piston. The supporting and sealing assembly includes a guiding region configured to axially guide the pump piston in the pump cylinder and a sealing region having a sealing lip.

Piston fuel pump for an internal combustion engine

The present invention relates to a fuel pump () which comprises a pump housing (), a delivery element () for delivering fuel, a heat-generating actuator () for actuating the delivery element (), a first fuel path () which leads from an inlet () to a delivery space (), and a second fuel path () which leads from the inlet () past the heat-generating actuator () to a first housing opening (), wherein the first housing opening () is arranged above the inlet () in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump () according to the invention and a fuel tank () in which the fuel pump () is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump ().

Fuel pump with improved delivery properties

The present invention relates to a fuel pump for pumping fuel, comprising a piston () and a diaphragm seal element (), which seals on an inner annular seal seat () and an outer annular seal seat (), wherein the following equation is satisfied: (Ra&#x2212;ra)/(ri+L)=ra/ri, where ri is the inner radius of the inner seal seat (), ra is the inner radius of the outer seal seat (), Ra is the outer diameter of the piston () and L is a difference between an outer radius (Ria) of the inner seal seat () and the inner radius (ri) of the inner seal seat (). The invention further relates to a method for operating a fuel pump.

Fuel pump having improved pumping behavior

A high-pressure fuel pump includes a pump housing with a housing wall and a damping device configured to damp inlet-side pressure pulses by varying a damping volume with an elastically deformable wall. At least one section of the elastically deformable wall is formed from one or more of at least one part of a jacket-like area of the housing wall and at least one part of a sealing support. The section is embodied such that it includes at least one main part configured to vary the damping volume.

High-pressure fuel pump

An arrangement transmits a torque between a shaft and a hub. The hub has at least approximately the interior geometry of an equilateral n-sided polygon, the side surfaces of which at least approximately bear against a clutch portion, which is of circular overall cross section, of the shaft, and wherein the shaft has at least one driver portion which is rotationally conjoint with respect to the clutch portion and which extends in the direction of a corner of the n-sided polygon.

Arrangement for transmitting a torque between a shaft and a hub

A high pressure fuel pump encompasses at least one delivery chamber and one high pressure outlet. in addition, a pressure limiting valve with a valve that is actuated by a pressure differential is provided that can open from the high pressure outlet to the delivery chamber. On a high pressure side of a valve seat of the pressure limiting valve, it is advantageous that a throttle device is provided, whose free cross section is at most approximately equal to a desired maximum opening cross section of the pressure limiting valve.

High pressure fuel pump

In order to provide a seal arrangement for sealing between a first medium space filled with a first medium and a second medium space filled with a second medium which ensures reliable sealing between the medium spaces with very low leakage values even over a prolonged period of use, wherein said seal arrangement comprises a moveable component which is displaceable in the longitudinal direction thereof and/or rotatable about the longitudinal direction thereof and extends through the seal arrangement and wherein the seal arrangement comprises a sealing element which comprises a first sealing region that is sealing in relation to the first medium space and a second sealing region that is sealing in relation to the second medium space, wherein the first sealing region comprises a first dynamic sealing section abutting against the moveable component and the second sealing region comprises a second dynamic sealing section abutting against the moveable component and at least one of the two dynamic sealing sections has at least two sealing lips, it is proposed that each of the two sealing regions should comprise at least one respective spring element which biases the dynamic sealing section of the respective sealing region against the moveable component.

Sealing arrangement

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Schwieberdingen, Germany

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