Robert Boschgmbh

Rolf Fischerkeller

Kurt Frank

Guenter-Paul Ballier

Wolfgang Wuerl

Uwe Liskow

Stephan Kleppner

Ansgar Seitz

Gerhard Jauch

Hannelore Scheerer

A device for feeding fuel from a supply container to an internal combustion engine of a motor vehicle has a supply container, a collecting cup arranged in the supply container, a fuel feeding pump which aspirates fuel from the collecting cup, a feeding conduit into which the aspirated fuel is fed to the internal combustion engine, a return conduit through which a fuel is returned back to said supply container, a jet pump arranged in the supply container and having a jet nozzle connected with the return conduit, a mixing pipe which is open in the collecting cup and is substantially in alignment with the jet nozzle, a suction opening provided between the jet nozzle and the mixing pipe, a check valve flap arranged in the collecting cup and closing an outlet of the mixing pipe, the check valve flap being formed so that it deviates a filling jet of the jet pump which is supplied from fuel from the supply container into the suction cup against a fuel pressure in the suction cup, from the outlet of the mixing pipe.

Device for feeding fuel

Fastening device for attaching a fuel line to a connecting piece

A fuel container for a motor vehicle has at least two supply chambers and a withdrawal chamber, a fuel pump feeding fuel from the withdrawal chamber, a pump circulating device operating in accordance with the principle of a suction jet and circulating fuel from at least one of the supply chambers into the withdrawal chamber, the pump circulating device including a single nozzle through which at least a part of a fuel stream fed by the fuel pump passes through it, and at least two suction pipes arranged one after the other in alignment with one another in a fuel jet produced by the nozzle and having suction inlets which communicate with a respective one of the supply chambers, a last one of the suction pipes having an outlet which faces away from the nozzle and is connected with the withdrawal chamber.

Fuel container

In a throttle device for a pressure control apparatus, the return line inside a pressure control valve or in the line course outside it is provided with a cross-sectional constriction that throttles the flow. This cross-sectional constriction is variable automatically, as a function of the flow rate and hence of the prevailing pressure, in such a way that at a low flow rate a small flow cross section and at a high flow rate a large flow cross section results. It is thus possible to design the return line pressure as high as possible over a wide range of the flow rate and to keep the pressure difference between the inflow line and return line slight and thereby to minimize the noise production in the pressure control valve.

Throttle device for a pressure control apparatus

A fuel feeding device for a motor vehicle has a fuel container having a plurality of parts with bottoms separated from one another, a fuel feeding aggregate arranged to supply fuel from the fuel container to an internal combustion engine, a jet pump, the parts of the fuel container including a first part in which the fuel feeding aggregate is arranged and a second part in which the jet pump is arranged separately from the first part, a fuel return conduit and a suction conduit having a connection portion, the jet pump being formed in the connection portion, a nozzle arranged in the fuel return conduit, and a mixing tubular portion provided in the suction conduit and connected with the nozzle immediately downstream in a fuel feeding direction.

Fuel feeding device for motor vehicles

Arranged in the fuel tank is a reservoir into which fuel is pumped by a jet pump connected to a return line from the internal combustion engine. The jet pump has a jet nozzle which is arranged in a holder formed on the reservoir. Between its inlet opening and the propulsion-nozzle opening, the jet nozzle has a bypass opening which is connected to a stub projecting into the reservoir. At its end, the stub is provided with a seat which can be closed by a closing element. Arranged in the reservoir is a leaf spring which is fixed at one end and which presses the closing element onto the seat. Together with the closing element, the bypass opening forms a bypass valve which allows fuel to flow out of the jet nozzle if a certain pressure is exceeded.

Growing community of inventors

Walheim, Germany

Rolf Fischerkeller