Abstract: The invention relates to a device for metering fluid, particularly for the metered injecting of a reduction agent into the exhaust tract of an internal combustion engine, which has an electrically controllable metering valve (11) having a valve housing (16), having an inlet opening and a metering opening (14, 15) for the fluid, and a cooling module (12) to which a coolant is applied for cooling the metering valve. In order to achieve a permanent fording ability of the device, the metering valve (11) is hermetically sealed in the cooling module (12) and only the inlet opening and the metering opening (14, 15) of the valve housing (13) are exposed.

Abstract: The invention relates to a device for metering fluid, particularly for the metered injecting of a reduction agent into the exhaust tract of an internal combustion engine, which has an electrically controllable metering valve (11) having a valve housing (16), having an inlet opening and a metering opening (14, 15) for the fluid, and a cooling module (12) to which a coolant is applied for cooling the metering valve. In order to achieve a permanent fording ability of the device, the metering valve (11) is hermetically sealed in the cooling module (12) and only the inlet opening and the metering opening (14, 15) of the valve housing (13) are exposed.

Abstract: The device has a feed pump arranged in the supply tank (12), which can be inserted through an opening (20) in the supply tank (12). The opening (20) is closed by means of a closure element (22) on which a pressure regulator is disposed, which is connected with the pressure side of the feed pump and with the internal combustion engine, and which can be connected with a relief chamber (12). The closure element (22) has a base body (30) made of plastic, in which a depression (40) has been formed, which is closed by means of an elastic diaphragm (52), so that a pressure chamber is formed. A connector (45) projects into the depression (40), which is connected with the relief chamber (12) and whose front end (51) can be closed by means of a flattened ball (74), which is movably seated in a support element (70) connected with the diaphragm (52).

Abstract: A device for supplying an internal combustion engine with fuel has a supply container from which the fuel is supplied and having an opening, a feed pump arranged in the supply container and insertable into the supply container through the opening, a closure part for closing the opening of the supply container, a pressure regulator arranged on the closure part and having a pressure chamber with a connection to a pressure side of the feed pump, to an internal combustion engine and to an unloading chamber, the closure part having a flange-shaped base body which closes the opening and is provided with a depression, a pipe formed of one piece with the body for forming a connection of the pressure chamber to the unloading chamber and extending into the depression, an elastically deformable diaphragm group which closes the depression for forming the pressure chamber, the pipe having a seat with which diaphragm group at least partially directly cooperates, a spring loading the diaphragm group toward the pipe so that

Abstract: An arrangement for pumping fuel out of a supply tank to an internal combustion engine having an electrically driven pumping unit which is disposed in a ram pot inserted into the supply tank. The ram pot is filled with fuel from the tank by means of a jet pump provided on its bottom; the intake opening of the jet pump is preceded by a filter that is formed by at least one ring of teeth axially protruding from the bottom of the ram pot, which enclose an intake chamber into which the intake opening of the jet pump protrudes.

Abstract: 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.