Robert Boschgmbh

Werner Schmid

Kurt Frank

Christof Ott

Willi Strohl

Klaus Schudt

Ulrich Projahn

Manfred Kramer

Walter Fleischer

Lothar Krauter

Karl Rapp

Wolfgang Soyer

Juergen Treiber

Jochen Thoennissen

Karl Mielich

Raymond Schuurman

Hellmut Kegel

Guenther Krehl

Bernhard Lucas

Hans-Joachim Kuppel

Martin Ungerer

Manfred Treter

Hans-Dieter Cramer

Klaus-Bernhard Laue

A pressure regulating valve () includes a magnet coil () received in a coil body (), an armature () movable relative to a pole piece () for actuating a valve closing member (), and a magnetic circuit () containing a magnet yoke (). The magnetic circuit () has a maximum of three components () that together form magnetic transitions () oriented in the axial direction.

Pressure regulating valve

The invention is based on an apparatus ( ) for regulating the pressure in a hydraulic circuit that comprises an electrically triggerable pressure-control valve ( ), a receptacle device ( ) in which the pressure-control valve ( ) is installed, and means ( ) for damping pressure pulsations. In order to save space, simplify the manufacture of the receptacle device ( ), and save additional holding elements, it is proposed according to the invention that the means ( ) for damping pressure pulsations be designed as integral components of the pressure-control valve ( ).

Method for controlling pressure in a hydraulic circuit

In a proposed electromagnetic pressure regulating valve (,), the functional characteristics of a pressure regulating valve are combined with those of a switching valve. The pressure regulating valve (,) can be used in particular to control automatic transmissions in motor vehicles and is characterized by reduced manufacturing costs, reduced leakage and an operating range which is expanded for reduced operating pressures and with a continuous characteristic line. For this purpose, the valve part (,) of the pressure regulating valve (,) has a first seat valve (,) with a closing element (,). This closing element (,) cooperates with an actuating element (,) which has a control edge (,) to form a second seat valve (,).

Electromagnetic hydraulic valve

An assembly for feeding fuel form a supply tank to an internal combustion engine, with a feed pump which is designed as a flow pump and the disk-shaped impeller of which rotates in rotation in a cylindrical pump chamber delimited by a suction cover and by an intermediate housing bearing on the latter and at the same time feeds fuel from a suction port in a suction cover to a delivery port in the intermediate housing to enlarge the production tolerances of a fit between the suction cover (7) on the intermediate housing, and in order to allow the two pump components to lift off from one another during the operation of the feed pump in order to flush out dirt particles from the pump chamber, the suction cover and the intermediate housing are braced relative to one another by means of a resilient connecting element and the suction cover and intermediate housing are permitted to move relative to each other in order to flush dirt from an area of the pump impeller.

Fuel pump including axially movable end covers for feeding fuel from a

A device for delivering fuel from a storage tank to the engine of a motor vehicle, having a two-stage feed pump driven to rotate by an electric drive motor. The preliminary stage of the feed pump is embodied as a side channel pump whose partially ring-shaped supply conduit has in its pump course a cross sectionally reduced region, which is constituted by means of a reduction of the conduit depth and in which the fuel flowing through the supply conduit is maintained at a constant pressure level so that the length of the supply conduit effective for a pressure increase can be reduced to achieve a quick increase of delivery pressure.

Unit for delivering fuel from a supply tank to the internal combustion

An arrangement for supplying fuel to an internal combustion engine of a motor vehicle has a supply tank, an aggregate which is located in the supply tank and a fuel delivery unit for supplying fuel from the supply tank to the internal combustion engine. The aggregate has a plurality of components extending along a delivery path of the fuel, is located in the supply tank, and is provided with a supporting element which carries a holding member for the components of the aggregate.

Arrangement for supplying fuel from supply tank to internal combustion

A device for supplying fuel from a supply tank to an internal combustion engine of a motor vehicle, has a pump chamber with end-side chamber walls and also having an inlet opening and an outlet opening, a drive motor, a supply pump having an impeller driven by the drive motor. The impeller rotates in the pump chamber and has a substantially disc-shaped hub part provided on its periphery with a plurality of radially outwardly extending vanes. At least one of the chamber walls in the region of radially outer ends of the vanes has an approximately ring shaped, groove-like supply passage which surrounds a rotary axis of the impeller. The inlet opening opens in a ring region of the pump chamber which is limited on one side by the hub part of the impeller and on the other side by an inner ring edge of the ring-shaped supply passage which surrounds the hub part with a distance from the latter.

Device for supplying fuel from supply tank to internal combustion engine

An arrangement for feeding of fuel to an internal combustion engine of a power vehicle comprises a supply tank having a tank bottom, a feeding aggregate arranged in the supply tank, a receiving part holding the feeding aggregate, a holder mounted on the tank bottom, and vibration damping unit through which the receiving part is connected with the holding ring, the vibration damping unit including a metal spring and a rubber elastic buffer through which the metal spring is mounted on at least one of the receiving part and the holder.

Arrangement for feeding of fuel from supply tank to internal combustion

A fuel injection pump, embodied as a series pump, has a governor rod for rotating a pump piston provided with an oblique control groove. The pump piston further has at least one longitudinal groove, by means of which upon congruence with a fill and relief opening of the pump work chamber, a zero fuel supply can be established. With electrically controlled actuation of the governor rod, the appropriate adjustment of the end stops of the governor rod or the appropriate embodiment of the pump piston assures that the opening comes into congruence with a longitudinal groove adjoining the full-load working zone of the pump piston before the end stop of the governor rod is reached.

Fuel injection pump for internal combustion engines

An electric centrifugal switch is proposed, in particular for the purpose of safety shutoff upon attainment of a shutoff rpm for fuel injection systems, electrically controlled in an open- or closed-loop manner, of internal combustion engines, which is not vulnerable to rotary oscillations and which effects a rapid shutoff. The centrifugal switch comprises a centrifugal pendulum secured by means of a metal band bearing on a revolving carrier element and a switch attached to the housing and provided with a switching distance from an actuation pin. The centrifugal pendulum carries a flyweight mass on the end of a first lever arm extending substantially in the direction of the rotary axis, and its second lever arm extending at least approximately rectangularly to the rotary axis, is held together with a metal band of the band bearing in constant contact on a roll-off surface located on the carrier element by a restoring spring and, in a preferred embodiment, by means of a supplementary spring element. The inclination and spring rate of the obliquely positioned restoring spring are so designed that the increase in spring force when the centrifugal pendulum is swinging outward is less than the corresponding increase in centrifugal force.

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Tamm, Germany

Werner Schmid