Robert Boschgmbh

Atlantic Richfield Company

Kautex Textron Gmbh & Co. Kg

Peter Schelhas

Klaus-Jurgen Peters

Wolfgang Maisch

Michael Wissmann

Dietmar Schmieder

Willi Strohl

Hans Kubach

Karl Gmelin

Albert Gerhard

Hans-Peter Braun

Hermann Nusser

Michael Kuehn

Lothar Krauter

Andreas Herforth

Heinrich Knapp

Kurt Frank

Martin Streib

Ulrich Kemmner

Reinhard Schwartz

Hans Braun

Max Greiner

Dietrich Trachte

Andreas Posselt

Klaus Marx

Klaus Gebert

Marko Lorenz

Andreas Baumann

Gunther Jaggle

Thomas Wieland

Rainer Schillinger

Michael Pfeil

Stefan Woerz

Peter Stiefel

Christian Pankiewitz

Mathias Rollwage

Manfred Franz

Silke Haag

Bernd Osswald

Winfried Eckart

Klaus J Peters

Harald Lang

Werner Schneider

Stefan Muelders

Alfred Mueller

Zdenek Liner

Michael Dufek

Dietmas Schmieder

David Krenovsky

Klaus Baier

Walter Schlott

Known tank flanges have a main filter which has a filter housing with an inlet and an outlet, and a first connecting duct for connecting the main filter to a feed unit. The filter housing is integrated in the tank flange, and filter fabric is inserted into the filter housing and the filter housing is closed off by a filter cover. The inlet of the filter housing is connected to the pressure side of a feed unit and the outlet leads to an internal combustion engine. A disadvantage is that, in order to exchange the filter fabric, the large-area filter cover must be opened, as a result of which a large amount of fuel vapor is dissipated to the atmosphere. In the case of the tank flange according to the invention, the exchangeability of the main filter is simplified by virtue of the main filter being embodied as a filter cartridge. It is provided according to the invention that the inlet of the main filter extends into the first connecting duct of the tank flange and therein forms a sealed connection.

Tank flange

Disclosed is a fuel conveying device including a valve housing in which a pressure release valve and a non-return valve are arranged parallel to one another, the pressure release valve having a first inlet, which downstream of a valve seat opens into a valve chamber in which a valve body is movably arranged and which is in fluid connection with a second inlet for the non-return valve via a first outlet. The device improves the control response of the pressure release valve by providing the first outlet at the periphery of the valve chamber and in the axial direction with respect to a valve axis such that when the pressure release valve is open the flow from the valve chamber into the second inlet is a substantially radial flow.

Fuel conveying device

Method and apparatus for detecting tank leaks, in which a gas pressure acts on a fluid which is situated in a tank, and in which the gas pressure in the tank or tank system is changed, wherein a tank leak is detected by evaluation of a temporal profile of a sum pressure of the fluid which is situated in the tank.

Method and apparatus for detecting tank leaks

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 diaphragm valve having a first chamber and a second chamber, which is separated from the first chamber by means of a valve member which cooperates with a valve seat. A first connecting conduit situated in the vicinity of the valve seat feeds into the first chamber. To enable the diaphragm valve to be used as a pressure control valve, the valve member has a through conduit that connects the first connecting conduit to the second chamber of the pressure control valve when the pressure control valve is closed.

Device for conveying fuel out of a tank and to a combustion engine

A return-flow-free fuel supply system for an internal combustion engine having at least one fuel pump for pumping fuel from a first region of a fuel reservoir into a pressure region communicating with a fuel distributor, at least one suction jet pump, through which fuel pumped through a suction jet pump line by means of the fuel pump flows and through which fuel can be pumped from a second region of the fuel reservoir into the first region, at least one means that regulate and/or control the pressure in the pressure region, and at least one check valve, by which at least a portion of the pressure region can be blocked off from the fuel pump. The means that regulate and/or control the pressure in the pressure region include at least one electrically actuatable magnet valve(), which is disposed downstream of the check valve in the suction jet pump line.

Non-return fuel supply system

In a feed unit for delivering fuel from a supply tank ( ) with a filter cup ( ) having a central chamber ( ) and an annular chamber ( ) enclosing the latter, with a filter cover ( ) which closes the annular chamber ( ) and which contains an inlet duct ( ) to the annular chamber ( ) and an outlet duct ( ) from the annular chamber ( ), and with a feed pump ( ) which is inserted in the central chamber ( ) and which projects with a suction connection piece ( ) through an opening ( ) into a suction space ( ), assembly is simplified and manufacturing costs are reduced in that the clearance diameter of the central chamber ( ) is dimensioned so as to be greater than the outer diameter of the pump housing ( ), and an axially projecting pressure connection piece ( ) is formed at the other end side of the housing ( ) remote of the suction connection piece ( ) and a mounting cap ( ) which engages over the pressure connection piece ( ) is formed at the filter cover ( ). A flexible sleeve ( ) is inserted between the pressure connection piece ( ) and the mounting cap ( ) on the one hand and the suction connection piece ( ) and opening ( ) in the cup base ( ) on the other hand and serves for the sealing, support and noise decoupling of the feed pump ( ) in the filter cup ( ).

Supply unit

A method for determining the instantaneous fluid level of a tank includes the steps of: designating a beginning fluid-level of the tank as an input value during the starting of the engine; ascertaining a first fluid-level value from a fluid level measured by a fluid-level measuring device, and ascertaining a second fluid-level value and a window around the second fluid-level value from the consumption of the engine and from the input value; comparing the first fluid-level value to the window around the second fluid-level value; determining whether the first or the second fluid-level value should be a new input value; displaying the new input value as the fluid level; and terminating the method if the engine is switched off or repeating the method starting from the ascertaining step when the engine is running.

Method for determining the fluid level of a tank in motor vehicles

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

Fuel-feed unit

A feeding device for fuel having an electric motor, a feed pump which is driven by the electric motor, a filter arranged in a fuel stream of the feed pump, a housing accommodating the electric motor, the feed pump and the filter, a fuel tank for a fuel supply and provided with a tank flange which forms a cover, tubular connections for guiding a fuel stream in a feeding direction and to the tank flange, the tubular connections being composed of an electrically conductive plastic and producing a throughgoing electrical ground connection of all components through which a fuel flows.

Feeding device for fuel

Peripheral pump, in particular for feeding fuel from feed tank to

A fuel supply assembly for feeding fuel to an internal combustion engine and comprising a gear pump that includes a ring gear having inner teeth, and a pinion arranged eccentrically with respect to said ring gear and having outer teeth meshing with the inner teeth of the ring gear and defining therewith expanding and contracting chambers during operation of the pump, the pump further including an outer support element for movably supporting the ring gear and including a supporting surface which engages a portion of the outer surface of the ring gear and is located radially outside of a discharge opening of the pump.

Fuel supply assembly for a motor vehicle

A fuel injection system is proposed which serves to adapt the fuel-air mixture as precisely as possible to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned a regulating valve whose movable valve element can be exposed on one side to the fuel pressure downstream of the respective metering valve and on the other side to a control pressure line defined on one end by a control pressure valve of the nozzle/impact plate type and on the other end by a control throttle. The control pressure valve has a permanent magnet and an electromagnet, the magnetic fluxes of which are guided via an armature in such a manner that in at least one air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in the same direction, while in at least one other air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in opposite directions. This kind of embodiment requires a substantially smaller triggering power on the part of the electromagnet. By reversing the exciter current of the electromagnet, the control pressure valve is opened widely enough that the control pressure engaging the regulating valves causes the closure of the regulating valves, and the injection of fuel is precluded.

Fuel injection system

Growing community of inventors

Stuttgart, Germany

Peter Schelhas