Robert Boschgmbh

Hans-Peter Braun

Thomas Wieland

Kurt Frank

Stephan Kleppner

Stefan Woerz

Willi Strohl

Erich Eiler

Dieter Schreckenberger

Peter Schelhas

Jochen Rose

Wolfgang Bueser

Paul Mason

Klaus-Dieter Hufnagel

Christian Ast

Edwin Fauser

Winfried Eckart

Ludger Kuermann

Frantisek Buric

Jaroslav Moucka

Michael Kuehn

David P Toutant

Christian Pankiewitz

Ansgar Seitz

Wolfgang Hiller

Pavel Motka

Petr Simek

Wolfgang Gabauer

Oliver Wahl

Gerald Zierer

Werner Schneider

Joachim Breidert

Erwin Franieck

Eugen Martin

Franz Hacker

Juergen Weikert

Tomas Slanec

Daniel Siska

Josef Jagos

Daniel Pridal

Roman Snejda

Martin Beyer

Petr Siegel

A fuel supply system includes a fuel pump having a bottom inlet end configured to pick up fuel and a top discharge end configured to discharge fuel at a pressure higher than that of the inlet end. A housing defines a pressure vessel in fluid communication with the discharge end of the fuel pump. The fuel pump is secured with respect to the housing so that the pressure vessel is laterally adjacent the fuel pump and the pressure vessel and the fuel pump have overlapping heights. Exactly one check valve is positioned between the discharge end of the fuel pump and the pressure vessel, and the check valve is spaced laterally away from the discharge end of the fuel pump at an inlet to the pressure vessel.

Fuel supply system

A fuel feed device () for a fuel tank () is presented. The fuel feed device () has a filter () with a filter housing (). The fuel feed device () furthermore has a second ejector pump () with a second nozzle () and a second mixing tube (). The second mixing tube () is arranged perpendicularly to a base of the fuel tank (). The second ejector pump () is at least partially integrated into the filter housing ().

Fuel feed device with integrated vertical ejector pump

Devices for conveying fuel are known having a conveying assembly and a pump holder holding the conveying assembly which has a receptacle for the conveying assembly and a holder connected to the receptacle via three damping elements. The damping elements damp the structure-born noise transmission from the conveying assembly to the adjacent components. The damping elements each have a cantilever section which projects starting from the receptacle into the region of the holder and runs in the radial direction and circumferential direction. The cantilever sections are designed as elastic spring arms, the axial deflection thereof in respect of a pump axis being able to exceed a maximum allowable value by means of external acceleration forces. The mechanical stresses occurring in the spring arms can lead to damage to the spring arms. In the device according to the invention, the damping elements have a strongly progressive spring characteristic curve in respect of an axial deflection such that a progressively increasing spring force in the damping element occurs with increasing spring travel of the pump holder. The axial deflection of the pump holder is consequently reduced over that of the prior art. According to the invention, an elastic spring section () connects on the cantilever section () which runs with the longitudinal extension thereof in the axial direction and in the circumferential direction in respect of a pump axis () and is connected to the holder ().

Device for conveying fuel

In known devices for pumping fuel, suction jet pumps are used which are driven by the fuel flowing back from the internal combustion engine and pump fuel from a supply tank into an impoundment container of a fuel pumping unit. In known suction jet pumps, the suction power is limited by the fact that the fuel stream applies itself to the housing wall, so that the entire area of the fuel stream is no longer available for entraining fuel. The device of the invention lessens this effect by providing at least one rib between the first partial section of the fuel line and the mixing conduit.

Suction jet pump with ribs for guiding the flow of fuel

A devices for pumping fuel has at least one suction jet pump and a drive line, supplying the suction jet pump with fuel, that branches off from a pressure line leading to an internal combustion engine and that can be blocked off by means of a shutoff valve. By means of a shutoff valve, it is possible to switch off the suction jet pumps. The pressure of the pressure line acts on the shutoff valve in such a way that the shutoff valve closes at a pressure that is greater than or equal to a predetermined closing pressure.

Device for pumping fuel

A device for delivering fuel having a delivery unit, a main filter with a filter housing situated downstream of the delivery unit, and a drive line for driving a suction jet pump embodied in the filter housing of the main filter. As a result, the assembly and manufacture costs of the device are reduced.

Device for delivering fuel from a tank to an internal combustion engine

The fuel supply apparatus according to the invention is improved in a simple manner in that it is provided with short fuel lines. According to the invention, the drive line of the suction jet pumps is connected to a pressure line downstream of the fuel supply pump and has at least one check valve or a siphon.

Apparatus for delivering fuel from a tank to an internal combustion engine

A fuel delivery device in which a preliminary filter and a throttle are provided in a drive line of a suction jet pump. The throttle is integrally formed with or connected to a preliminary filter to thereby reduce the manufacturing costs and simplify installation.

Device for delivering fuel from a reservoir to an internal combustion engine

Known apparatuses for pumping fuel have at least two suction jet pumps, which each have one drive nozzle and one collection conduit and mixing conduit located downstream of the drive nozzle. A disadvantage is that the parallel suction jet pumps require a large amount of installation space, are embodied very massively, and therefore require a large amount of injection-molding compound for their manufacture. In the apparatus of the invention, the production costs and the required installation space for the suction jet pumps are reduced. According to the invention, the drive nozzles are surrounded by a single collection conduit, narrowing conically in the flow direction and located upstream of the mixing conduits.

Apparatus for pumping fuel

A fuel delivery device having a collecting receptacle disposed inside a storage tank and from which a delivery unit aspirates fuel and delivers it to an engine. A jet pump which delivers the fuel from the storage tank into the collecting receptacle is disposed close to a bottom of the collecting receptacle and feeds fuel into it through an ascending line that extends up into the vicinity of the upper rim of the collecting receptacle. A separate component is disposed on the outside of a peripheral wall of the collecting receptacle. The outside of the peripheral wall and/or the side of the component oriented toward the peripheral wall has an open channel. The component is tightly connected to the peripheral wall to cover the open channel and to form the ascending line. The collecting receptacle and the component can be easily produced along with the open channel and the component can be attached to the collecting receptacle with a minimum of effort.

Device for transporting fuel from a reservoir to an internal combustion engine

The invention relates to a fuel supply system for an internal combustion engine, having a unit such as a pressure regulator, mounted in electrically insulated fashion and including an electrically conductive housing, and the housing is connected via an electrical connection to a defined electrical potential. As a result, static charging of the unit, which could become dangerous, is precluded. The fuel supply system is intended in particular for pumping fuel to an internal combustion engine of a motor vehicle.

A fuel delivery device including a closure element, which closes an opening of a fuel tank and has a cup-shaped receptacle, which opens toward the outside of the fuel tank, contains the fuel filter, and can be closed by a cover element, which can be detachably fastened to the closure element. An elastic sealing ring, which is clamped between the closure element and the cover element, seals the receptacle. In the vicinity of the sealing ring, the closure element has at least one opening via which the receptacle communicates with the interior of the fuel tank. When the cover element is fastened onto the closure element, the sealing ring, starting from a non-deformed original shape, is elastically deformed in such a way that it closes the at least one opening. When the cover element is detached from the closure element, the sealing ring returns to its original shape in which it unblocks the at least one opening. This produces a pressure relief into the interior of the fuel tank when the cover element is detached.

Fuel supply device of an internal combustion engine with a fuel filter

A plug connection device for pressure medium conduits, for binding or connection of fuel conduits has a housing provided with arresting edges, a plug insertable in the housing and having holding elements which form-lockingly engage the arresting edges, the plug having a coupling region which in a not plugged in condition of the plug is formed as a substantially ring-shaped circumferential collar and during insertion in an associated receiving portion of the housing is deformed so that the holding elements engaging the arresting edges are formed, or the holding elements are formed at an end side on a tubular plug portion produced by extrusion.

Plug connection device

The fuel supply apparatus has a reservoir ( ) arranged within a fuel tank ( ) from which fuel is drawn by a fuel feed unit ( ) and supplied to an internal combustion engine ( ). Unburned fuel from the internal combustion engine ( ) is fed back into the fuel tank ( ) via a return line ( ). A control valve ( ) is arranged in the return line ( ), by which a connection of the return line ( ) with a jet pump ( ) is controlled, which supplies fuel from the fuel tank ( ) to the reservoir ( ). The control valve ( ) has a floating body floating on the fuel in the reservoir ( ) when it is nearly filled or completely filled, by which a control element of the control valve ( ) is movable. When the reservoir ( ) is not in its maximum filled state (hmax) the jet pump ( ) is connected with the return line ( ), but when the reservoir ( ) is in its maximum filled state (hmax) the jet pump ( ) is disconnected from the return line ( ), which then opens into the reservoir ( ). Overflow of fuel from the reservoir when it is filled is thereby reduced.

Fuel supply apparatus for an internal combustion engine of a motor vehicle

The invention relates to a fuel supply system for an internal combustion engine, having a unit, such as a pressure regulator, mounted in electrically insulated fashion and including an electrically conductive housing, and the housing is connected via an electrical connection to a defined electrical potential. As a result, static charging of the unit, which could become dangerous, is precluded. The fuel supply system is intended in particular for pumping fuel to an internal combustion engine of a motor vehicle.

Growing community of inventors

Renfrizhausen, Germany

Hans-Peter Braun