Abstract: The invention relates to a side channel compressor (1) for a fuel cell system (2) for delivering and/or compressing a gaseous medium, in particular hydrogen or a gas containing hydrogen, comprising a housing (3) and an impeller wheel (4) which can be driven by an electric motor and which is accommodated in the housing (3), thus forming at least one side channel (5) disposed axially in relation to the impeller wheel (4), wherein the side channel (5) is connected, via an axial gap (6) remaining between the housing (3) and the impeller wheel (4), to an annular channel (7) which is disposed radially in relation to the impeller wheel (4). According to the invention, the annular channel (7) is connected to an outlet (10) of the side channel compressor (1) via at least one housing bore (8, 9).

Abstract: A motor vehicle servomotor arrangement includes an electric motor with a stator, a rotor and brushes, as well as a controller with a signal input and a signal output that is connected to the electric motor. The controller is configured to transmit a control signal to the electric motor in response to an input signal supplied via the signal input by a unique function. The controller is configured to modulate the control signal in such a way that different control signals are output upon successive identical input signals within predefined input signal ranges and/or time-variant control signals are output upon identical input signals.

Abstract: A motor vehicle servomotor arrangement includes an electric motor with a stator, a rotor and brushes, as well as a controller with a signal input and a signal output that is connected to the electric motor. The controller is configured to transmit a control signal to the electric motor in response to an input signal supplied via the signal input by a unique function. The controller is configured to modulate the control signal in such a way that different control signals are output upon successive identical input signals within predefined input signal ranges and/or time-variant control signals are output upon identical input signals.

Abstract: A method for operating an internal combustion engine is described in which a combustion air ratio (?) is determined and used to determine a deviation of this combustion air ratio from an in particular default or determined set point combustion air ratio. Spontaneous ignition of the internal combustion engine are detected based on the determined deviation (??) and used to control the operation of the engine.

Abstract: A pliers for cutting workpieces, in particular workpieces made of metal, comprising at least one plier leg (1) and a pressure element (2), which are connected to each other by a rotation point (13), wherein the plier leg (1) forms a jaw (8) for receiving the workpiece. A cutting element (18) with a cutting mouth (19) is associated with the plier leg (1), wherein a bottom of the jaw (8) and a bottom of the cutting mouth (19) are arranged in the vicinity of a rotation point (29) about which the cutting element (18) is rotating in the plier leg (1).

Abstract: A method for operating an internal combustion engine is described in which a combustion air ratio (?) is determined and used to determine a deviation of this combustion air ratio from an in particular default or determined set point combustion air ratio. Spontaneous ignition of the internal combustion engine are detected based on the determined deviation (??) and used to control the operation of the engine.

Abstract: A pliers for cutting workpieces, in particular workpieces made of metal, comprising at least one plier leg (1) and a pressure element (2), which are connected to each other by a rotation point (13), wherein the plier leg (1) forms a jaw (8) for receiving the workpiece. A cutting element (18) with a cutting mouth (19) is associated with the plier leg (1), wherein a bottom of the jaw (8) and a bottom of the cutting mouth (19) are arranged in the vicinity of a rotation point (29) about which the cutting element (18) is rotating in the plier leg (1).