Abstract: A battery system for a motor vehicle is described having at least one electrochemical cell and at least one latent heat accumulator, in which the latent heat accumulator has a phase-change material as the storage medium. A crystallization initiation device is provided for triggering an exothermic phase transition of the phase-change material, the crystallization initiation device being triggered with the aid of a control unit.

Abstract: An actuator unit including a step-up which varies over an adjustment path, between a control motor and a wheel connected to the throttle body in a manner fixed against relative rotation offers the advantage that in certain positions of the throttle body, the required increased torque can also be brought to bear by a relatively low-torque control motor. The actuator unit is intended in particular for internal combustion engines for motor vehicles.

Abstract: A flap valve for controlling a gas flow has an elastically deformable valve tube that conveys the gas flow and having a valve flap that is disposed in the valve tube for movement between an open position and a closed position by a flap shaft that can be driven in order to adjust the valve flap and which is disposed at an acute angle in relation to the valve tube axis, to which shaft the valve flap is fastened so that in the closed position of the valve flap, the flap normal encloses an acute angle with the valve tube axis, in order to assure only a slight amount of leakage in the closed position of the valve flap and a low opening torque, the outer contour of the valve flap is approximately oval in shape. Preferably, the outer contour is embodied as an ellipse.

Abstract: Impeller and stator for use in a fluid machine and consisting, for reducing flow noise and for improving the stability of the characteristic curve between the flow input and output cross-sections, of a solid material matrix with a plurality of flow channels for deflecting the flow and increasing the pressure.

Abstract: In actuator units known until now, there is a constant step-up between the control motor and the throttle body. The control motor must be designed such that the torque of the control motor suffices in every position of the throttle body.

Abstract: In a flap valve for controlling a gas flow, having an elastically deformable valve tube (11) that conveys the gas flow and having a valve flap (12) that is disposed in the valve tube (11) and can be moved between an open position and a closed position, and having a flap shaft (13) that can be driven in order to adjust the valve flap (12) and is disposed at an acute angle (&agr;) in relation to the valve tube axis (111), to which shaft the valve flap (12) is fastened so that in the closed position of the valve flap (12), the flap normal (nK) encloses an acute angle with the valve tube axis (111), in order to assure only a slight amount of leakage in the closed position of the valve flap (12) and a low opening torque, the outer contour of the valve flap (12) is approximately oval in shape. Preferably, the outer contour is embodied as an ellipse (FIG. 1).

Abstract: In a flap valve for controlling a gas flow, with a valve tube (11) that carries the gas flow and with a valve flap (14) that is pivotable in the valve tube (11) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube (20) disposed coaxially in the valve tube (11), and with a valve shaft (15) connected to the valve flap (14) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap (14) and for the sake of technologically simple, inexpensive production of the flap valve (14), that the valve shaft (15) is positioned at an acute angle (&ggr;) relative to the valve plane, and the thin-walled tube (20) is formed directly and integrally onto the valve tube (11) (FIG. 2).

Abstract: In a flap valve for controlling a gas stream, having a valve tube that carries the gas stream and having a valve flap, disposed in the valve tube, that is pivotable between a closing position and an open position and is seated in a manner fixed against relative rotation on an adjustable flap shaft, to avoid openings of the shaft in the valve tube inside the sealing region between the valve flap and the valve tube, the flap shaft is oriented such that its axis forms an acute angle (&agr;) with the axis of the valve tube. The valve flap seated on the flap shaft in a manner fixed against relative rotation is oriented such that in its closing position, its surface normal is aligned with the axis of the valve tube or extends at an acute angle to it.

Abstract: In a flap valve for controlling a gas flow, with a valve tube (11) that carries the gas flow and with a valve flap (14) that is pivotable in the valve tube (11) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube (20) disposed coaxially in the valve tube (11), and with a valve shaft (15) connected to the valve flap (14) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap (14) and for the sake of technologically simple, inexpensive production of the flap valve (14), that the valve shaft (15) is positioned at an acute angle (&ggr;) relative to the valve plane, and the thin-walled tube (20) is formed directly and integrally onto the valve tube (11).

Abstract: The invention relates to a flap valve for controlling a gas flow (9, 10), with a shielded tube (3), which conveys the gas flow, and a valve flap (6) disposed in it, which can pivot between an open position (18) and a closed position (17). The valve flap (6) is supported in a non-rotating fashion on an adjustable flap shaft (7) and in its closed position (17), covers the cross section (19) of the shielded tube (3) and in its open position (18), maximally opens this cross section. An acute angle &agr; is enclosed between the axis (8) of the valve flap (6) and the axis (13) of the shielded tube (3). The pivotable valve flap (6) is encompassed in the shielded tube (3) by a valve tube (4), which contains a decoupling element (21).