Abstract: A transmission for a muscle-powered vehicle having an auxiliary motor, in particular for a pedelec, including a housing which can be fitted on the vehicle, a first drive shaft mounted in the housing for feeding in muscle power, said first drive shaft being coupled to an approximately coaxial output shaft for driving the vehicle, and further including, approximately at a right angle to said first drive shaft, a second drive shaft for connecting the auxiliary motor, which second drive shaft acts on the output shaft via an angular gear. The angular gear is formed by a crown gear on the output shaft and a sprocket on the second drive shaft, which sprocket engages in the crown gear.

Abstract: A transmission for a muscle-powered vehicle having an auxiliary motor, in particular for a pedelec, including a housing which can be fitted on the vehicle, a first drive shaft mounted in the housing for feeding in muscle power, said first drive shaft being coupled to an approximately coaxial output shaft for driving the vehicle, and further including, approximately at a right angle to said first drive shaft, a second drive shaft for connecting the auxiliary motor, which second drive shaft acts on the output shaft via an angular gear. The angular gear is formed by a crown gear on the output shaft and a sprocket on the second drive shaft, which sprocket engages in the crown gear.

Abstract: A multichamber tank for motor vehicles comprises two chambers (4, 5) connected via a constricted region (6) located high up in the chambers, a first chamber (4) having a filler neck (2), and a line (13) bridging the constriction forming the connection to a second chamber (5). In order that both chambers are filled at approximately the same speed during filling-up through the filler neck (2), a pump (11) designed for level equalization during filling-up and driven by an electric motor (12) is provided in the line (13), and a level sensor (17, 18) is provided in each of the two chambers (4, 5), the output signals of which sensors are available to a control unit (14) which controls the electric motor (12) of the pump (11).

Abstract: A multichamber tank for motor vehicles comprises two chambers (4, 5) connected via a constricted region (6) located high up in the chambers, a first chamber (4) having a filler neck (2), and a line (13) bridging the constriction forming the connection to a second chamber (5). In order that both chambers are filled at approximately the same speed during filling-up through the filler neck (2), a pump (11) designed for level equalization during filling-up and driven by an electric motor (12) is provided in the line (13), and a level sensor (17, 18) is provided in each of the two chambers (4, 5), the output signals of which sensors are available to a control unit (14) which controls the electric motor (12) of the pump (11).

Abstract: A fuel tank with ventilation system and activated carbon filter which, on the one hand, is connected by a first line (22) to the fuel tank and by a second line (25) to an internal combustion engine, and, on the other hand, by a third line (26) to the atmosphere, should have as simple and compact a ventilation system as possible, which fulfills all functions in full measure. To this end, a controlled two-way valve unit (23) is provided, whereof the first path connects the first line (22) to the third line (26) and the second path connects the second line (25) to the third line (26), and an electronic control unit (28) is provided, which on the input side is connected to a refueling sensor (7) and to a liquid level sensor (13) and on the output side is connected to the controlled two-way valve unit (23).

Abstract: A fuel tank with ventilation system and activated carbon filter which, on the one hand, is connected by a first line (22) to the fuel tank and by a second line (25) to an internal combustion engine, and, on the other hand, by a third line (26) to the atmosphere, should have as simple and compact a ventilation system as possible, which fulfills all functions in full measure. To this end, a controlled two-way valve unit (23) is provided, whereof the first path connects the first line (22) to the third line (26) and the second path connects the second line (25) to the third line (26), and an electronic control unit (28) is provided, which on the input side is connected to a refueling sensor (7) and to a liquid level sensor (13) and on the output side is connected to the controlled two-way valve unit (23).

Abstract: A fuel return valve comprises a housing and a closing unit, a first passage, which is line-connected to a fuel pump, a second passage, which is line-connected to an internal combustion engine, and a third passage, which is line-connected to the fuel tank, as well as a pressure chamber, being formed in the housing, which pressure chamber is in communication with the first passage, and, via the closing unit, with the third passage. To make a valve of this type maintenance-free and simple and inexpensive to produce, the closing unit is a piston which is guided in the housing attachment and is pressed by a spring arranged and supported in the housing attachment onto a sealing surface which is formed on the housing and surrounds the pressure chamber, and an annular chamber which is in communication with the third passage and with the space containing the spring is formed outside the sealing surface.

Abstract: A fuel return valve comprises a housing and a closing unit, a first passage, which is line-connected to a fuel pump, a second passage, which is line-connected to an internal combustion engine, and a third passage, which is line-connected to the fuel tank, as well as a pressure chamber, being formed in the housing, which pressure chamber is in communication with the first passage, and, via the closing unit, with the third passage. To make a valve of this type maintenance-free and simple and inexpensive to produce, the closing unit is a piston which is guided in the housing attachment and is pressed by a spring arranged and supported in the housing attachment onto a sealing surface which is formed on the housing and surrounds the pressure chamber, and an annular chamber which is in communication with the third passage and with the space containing the spring is formed outside the sealing surface.

Abstract: Multifunctional valve for the fuel tank of a motor vehicle. In order to fulfill all these requirements in terms of safety and the restriction of emissions with a valve in as simple a way as possible, the closing element (22) can be moved to a limited degree with respect the float (16), is acted on by a first spring (27) and has a small pressure equalization hole (25), an intermediate element (30) is provided on the float (16) and above the closing element (22) and can move to a limited degree with respect to the float (16) in the axial direction and is acted on by a second spring (35), and a seat plate (38) is arranged above the intermediate element (30) and is pressed downward against a second seat (43) by a third spring (39).

Abstract: Multifunctional valve for the fuel tank of a motor vehicle. In order to fulfill all these requirements in terms of safety and the restriction of emissions with a valve in as simple a way as possible, the closing element (22) can be moved to a limited degree with respect the float (16), is acted on by a first spring (27) and has a small pressure equalization hole (25), an intermediate element (30) is provided on the float (16) and above the closing element (22) and can move to a limited degree with respect to the float (16) in the axial direction and is acted on by a second spring (35), and a seat plate (38) is arranged above the intermediate element (30) and is pressed downward against a second seat (43) by a third spring (39).

Abstract: A plug (2) for sealing a filler neck (1) of a fuel tank has a cap (3) which is dismountably attached to the end (5) of the filler neck using a thread (4) or bayonet, and a seal (6) whose sealing surface (7) faces a counter-sealing surface (8) of the filler neck, whereby a ring-shaped molding (9) is provided between the sealing surface and the counter-sealing surface. In order to minimize the amount of permeation, a sealing ring (10) outside of the molding (9) is provided, the sealing ring being made of an elastomer with high resistance to permeation, and the sealing surface (7) and the counter-sealing surface (8) create a narrow gap (20) on the sealing ring (10) side facing the molding (9), this gap extending to the sealing ring (10).

Abstract: Device for preventing the overfilling of a fuel tank (1) provided with a filler neck and a filling vent line (6), an operational vent line (11), which leads to the outside or to a collecting tank, opening into the fuel tank above the opening into the filling vent line, in which operational vent line there is connected a valve device (13) which is closed during filling of the fuel tank and is open in the remaining time, the valve device having a valve closing member (13′) which can be engaged with a valve seat (19′) in the direction leading away from the fuel tank, is preloaded into the open position and is bridged, at least in the blocked state, by a flow-restricting partial-flow path (14), the valve seat (19′) for its part being movably mounted, forming a pressure relief valve clearance (25) with an inner shoulder (24) of the valve device (13), and being preloaded into the closed position and in the direction of the valve closing member (13′).

Abstract: A fuel-filler inlet for motor vehicles comprises a closure neck, an insert associated with the closure neck, a filling chamber downstream of the insert, and a filling tube downstream of the filling chamber which leads to a fuel tank. In order to achieve good guidance of the fuel nozzle, reliable response of the expansion port and ventilation during the fuel-dispensing operation, a collar is provided between the filling chamber and filling tube, the internal diameter of which is somewhat larger than that of the opening tube of a fuel nozzle. The collar provides through-passage openings which, with the fuel nozzle inserted, produce a flow connection between the filling tube and filling chamber.

Abstract: In motor vehicles with an onboard refueling vapor recovery (ORVR) system, a filling pipe with a reduced cross-section is provided. The pipe portion with reduced cross-sectional area has at least one longitudinally directed bead which gradually merges into the adjoining cylindrical regions to reduce flow resistance and prevent turbulent flow. The bead can be produced without impairing the strength of the filling pipe. When two or more beads are provided, they are preferably distributed equiangularly.

Abstract: A pressure and/or vacuum relief valve (11) for fitting in a cap assembly (4) for an automotive tank filler neck (1), with a substantially cylindrical valve housing (12), in which a valve spindle (23) controlling a first valve gap (26, 27) is mounted axially movably, on which, if necessary, a sleeve (29) controlling a second valve gap (27, 30) is guided axially movably, wherein the valve spindle (23) passes through a central aperture (24) in the upper end and a central aperture (25) in the lower end of the valve housing (12) and is axially guided by those apertures (24, 25).

Abstract: A check valve for use in a filler pipe of a motor-vehicle fuel system, having a housing fixed in the interior of the pipe and a movably mounted flap closure which is opened by the flow of fuel through the filler pipe to the fuel tank, and closes again automatically when fueling stops. According to the invention, a configuration that is particularly favorable in terms of flow dynamics is provided wherein the flap closure comprises two valve flaps which are movably mounted jointly in the region of the center of the housing.

Abstract: A cap assembly (4) for a filler neck, especially of a motor vehicle fuel tank, with a somewhat pot-shaped insert (7) insertable to form a seal for the end of the filler neck (1), having projections (6) at its outer periphery engaging in bayonet or threaded grooves (5) in the filler neck and covered at its upper end projecting from the filler neck by a cap (8), and fitted with an over/underpressure valve (11) which acts via apertures (35, 39) in the base of the insert (7) and in its upper end and/or in the cap (8) between the inside of the filler neck and the atmosphere. The entire insert (7) is pressed from sheet steel and the over/underpressure valve (11) is encapsulated in a valve housing (12) fitted in the insert (7) and having a peripheral flange secured by the folded edge (14) of the insert (7).

Abstract: A closure device for a vehicle tank filler neck, which has a shut-off valve (21) provided with an actuating device (22) and which terminates in a recessed area (8) of the vehicle body (9), which can be covered by means of a body flap (10), wherein the body flap (10) has a drive device (23) which is controlled by the actuating device (22) via a unidirectional control path.

Abstract: To provide a simple on-board refueling vapor recovery (ORVR) system without separate check valves and the like, a multi-path valve, typically a 6/2 valve (5) is provided, and formed with a discrete switching path (13) which is inserted in a pressure equalization line (12). Upon valve operation between a fuel filling mode position and an operating mode position, respectively, the valve switches the discrete switching path of the pressure equalization line (12) to connect the equalization line (12) to a fuel vapor receptor through a valve outlet when the valve (5) is in operating mode position, while blocking the equalization line (12) when the valve (6) is in filling mode position.

Abstract: A closure device for a vehicle tank filler neck (1), which has an opening (3) provided with a flap (5) for the entry of the filling tube (4) of a fuel pump nozzle, wherein the flap (5) can be prestressed against the lower edge of the opening (3) by means of a spring (6), and an additional load in the closing direction can be placed on the flap (5) with the aid of an actuation device (11), wherein the actuation device (11) furthermore controls a selector valve (19) which, when the flap (5) is in the non-loaded position, connects the filler neck (1) below the flap (5) with a first recovery line (30) leading to the fuel vapor recovery container, but in the position where the flap (5) is under a load connects a pressure equalization line (25) connected to the vehicle tank with a second recovery line (24) of a narrower flow cross section leading to the recovery container and equipped with a roll-over valve.