Siemens Aktiengesellschaft

Woco Industrietechnik Gmbh

Eberhard Geiβel

Torsten Hofmann

Martin Heldmann

A multiport valve for controlling a fluid flow in a fluid circuit, such as a cooling fluid circuit of a motor vehicle, may include a valve housing having at least three fluid connections and a rotary slide for setting the fluid flow. The rotary slide includes at least two fluid channels and is configured to connect two respective fluid connections fluidly via one fluid channel dependent upon its rotary position in relation to its rotational axis. The at least three fluid connections and the at least two fluid channels overlap in relation to a crosswise direction oriented crosswise relative to the rotational axis.

Multiport valve, fluid circuit and cooling fluid circuit

In a fuel pump in the form of a side-channel pump for a motor vehicle two partially annular ducts () concentrically enclosing one another are connected to one another via a connecting duct (). Connections () of the connecting duct () to the partially annular ducts () are laid so that at a rated speed of the fuel pump the same pressure prevails in each of them. If the speed falls below the rated speed, fuel passes from the radially outer, partially annular duct () into the radially inner, partially annular duct (). A sufficient delivery capacity through the radially inner, partially annular duct () is thereby ensured.

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Künzell, Germany

Eberhard Geiβel