Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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

Abstract: 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.

Abstract: 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.

Abstract: An apparatus for pumping fuel from a tank (10) to the internal combustion engine (12) of a vehicle has a jet pump (24), which supplies fuel returning from the internal combustion engine (12) in a return line (22) together with fuel disposed in the tank (10) into a storage reservoir (14) of a fuel delivery unit (16). The invention proposes embodying a restriction (23) for the fuel between a seat edge (31) and a spring-loaded ball (32). In addition, inlet openings (39) for the fuel disposed in the tank (10) are embodied in the vicinity of the restriction (23). 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 (22).

Abstract: 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

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a device for a fuel system, having a pressure chamber that communicates with a fuel connection and having a diaphragm that is installed at its outer peripheral region in a housing and partitions off the pressure chamber. A preassembled unit can be fastened, with the diaphragm built into the housing, on the basic body and the diaphragm can come to rest on a stop provided on the basic body. The device is intended in particular for regulating a pressure in a fuel system.

Abstract: The invention relates to a device for a fuel supply system, having a pressure chamber that communicates with a fuel connection, and having a diaphragm built in on its outer peripheral region in a basic body which partitions off the pressure chamber, wherein the diaphragm is fastened in the peripheral region with a spring ring that is under initial tension and is retained on the basic body.

Abstract: In connection with a flow pump, particularly for the conveying of fuel from a fuel tank of a motor vehicle, with a pump chamber (16), an impeller wheel (24) rotating in the pump chamber (16), and two parallel side walls (17, 18) spaced apart from each other and delimiting the pump chamber (16), in one of which a groove-like side channel (26), open toward the pump chamber (16), is disposed, which extends concentrically to the pump axis from a channel start (261) to a channel end (262), a further pump inlet (30) for the connection of a fluid return line (13) and which opens directly into the side channel (26) at a distance from the channel end (262), is provided for the purpose of improved efficiency of the flow pump.

Abstract: The invention relates to a pressure regulator for a fuel system. The pressure regulator includes a housing assembled out of at least two housing parts. A membrane unit is securely installed in a sealed fashion between the housing parts. The securing region that securely holds the two housing parts and the membrane unit in a sealed fashion has an elastic region so that the desired secure connection is assured by simply snapping the two housing parts together. The device is provided in particular for regulating a pressure in a fuel system.

Abstract: 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 differenc