Robert Boschgmbh

Erich Eiler

Willi Strohl

Jochen Rose

Albert Gerhard

Wolfgang Bueser

Dietmar Schmieder

Hans-Peter Braun

Stephan Kleppner

Frantisek Buric

Kurt Frank

Klaus-Dieter Hufnagel

Oliver Wahl

Edwin Fauser

Jaroslav Moucka

Wolfgang Hiller

Thomas Wieland

Mathias Rollwage

Wolfgang Gabauer

Michael Niederkofler

Steffen Mihatsch

Ludger Kuermann

Juergen Weikert

Dieter Issler

Rudolf Meidinger

Alexander Brand

Jaroslay Moucka

Georg Haeussler

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

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.

Fuel supply system

A feeding aggregate for fuel has a feed pump which is formed as a side channel pump and has a housing, a pump chamber formed in the housing, and an impeller arranged in the pump chamber, an electric motor provided for driving of the impeller and having a stator and a rotor, with the rotor formed of one piece with the impeller, the feed pump having at least one pump stage, a rim of vanes having vane chambers therebetween and provided on at least one end side of the impeller, a partial ring-shaped side passage formed in the housing opposite to the rim of vanes and having an inlet and an outlet spaced from one another in a peripheral direction of the impeller and open into the side passage, the at least one pump stage of the feed pump having the rim of vanes only on one end side of the impeller and having the side passage in the housing opposite to the rim of vanes, the inlet and the outlet of the side passage being arranged at a same end side of the impeller, and the impeller at an end side which is opposite to the vanes being provided with recesses which are at least approximately mirror-symmetrical to the vane chambers and are connected through openings in the impeller with the vane chambers.

Feeding aggregate for fuel

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.

Fuel supply device

An apparatus for pumping fuel from a tank ( ) to the internal combustion engine ( ) of a vehicle has a jet pump ( ), which supplies fuel returning from the internal combustion engine ( ) in a return line ( ) together with fuel disposed in the tank ( ) into a storage reservoir ( ) of a fuel delivery unit ( ). The invention proposes embodying a restriction ( ) for the fuel between a seat edge ( ) and a spring-loaded ball ( ). In addition, inlet openings ( ) for the fuel disposed in the tank ( ) are embodied in the vicinity of the restriction ( ). The apparatus has the advantage of a high delivery output, a compact design, and a delivery onset even when there are relatively low return quantities. Furthermore, fuel is prevented from flowing back into the return line ( ).

Device for conveying fuel from a tank to the internal combustion engine of a motor vehicle

The apparatus for supplying fuel includes a fuel tank and a fuel feed unit in the fuel tank. The fuel feed unit has a main housing, a suction cover arranged in a bottom part of the main housing, a fuel pump and a degassing valve arranged in the suction cover for degassing the fuel pump. The fuel pump itself includes an impeller housing with a circular passage for fuel flow and an electric-motor-driven impeller. The impeller housing is arranged in the main housing and next to the suction cover and it is provided with a degassing passage connecting the circular passage with the degassing valve. To improve starting behavior the fuel feed unit has a degassing valve in the suction cover, which is connected with the circular passage of the impeller housing by a degassing passage. The degassing valve opens to the fuel tank when pressure in the degassing passage exceeds a predetermined value for degassing the fuel pump. The degassing valve can be a spring-loaded ball valve in which the compression spring bearing on the ball provides a predetermined counter-force so that the degassing valve is kept open during idle and start of impeller rotation until degassing is complete.

Apparatus for supplying a fuel by means of a fuel supply unit arranged in a housing

A pressure regulating valve has a valve chamber having an inlet for connecting to a pressure source, a discharge chamber communicating through a valve opening with the valve chamber, a valve member, a valve seat surrounding the valve opening, a valve closing spring which presses the valve member against the valve seat with an adjustable spring force, and a throttling surface arranged downstream of the valve opening so that between the valve member and an inner wall of the discharge chamber, a pressure is formed at the valve member which counteracts the spring force.

Pressure regulating valve

Device for a fuel system of an internal combustion engine

Device for a fuel supply system for an internal combustion engine

Flow pump for conveying fluids from storage tank to fluid consumer

Pressure regulator for a fuel system

An aggregate for feeding fuel from a fuel supply tank to an internal combustion engine, the aggregate has a housing through which fuel flows, a feeding pump and a motor which drives the pump, the feeding pump and the motor being arranged in the housing so that behind the feeding pump as considered in a flow direction a pressure chamber limited by the feeding pump is provided, a valve communicating the pressure chamber with an outer chamber, the valve having a closing element which during a normal operation of the feeding aggregate is held in a closing position so that the pressure chamber is separated from the outer chamber, the valve having a first passage with a first fluid flow and communicating the pressure chamber with the outer chamber, a second passage with a second fluid flow flowing around the closing element and leading in a joint opening toward the outer chamber, so that with increasing first fluid flow before and after the closing element as considered in the closing direction a pressure difference is formed and the closing element is transferable from an opening position to a closing position.

Aggregate for feeding fuel from supply tank to internal combustion engine

Growing community of inventors

Sersheim, Germany

Erich Eiler