Abstract: A method for controlling a fuel-air mixture of a system with a manipulated variable for controlling an actuator (2) of the system in a first method phase for identification of the system behavior using a standard controller, in order to adjust the actual value on average to a target value. A profile of the actual value and a profile of the manipulated variable are recorded during the first method phase for identification of the system behavior, and from these the gain factor depending on the manipulated variable and the dead time are determined. After the determination of the dead time and the gain factor in a second method phase for model-predictive adaptive control of the system, the manipulated variable is determined using a model-based controller that has a Smith predictor and takes account of the gain factor and the dead time in order to adjust the actual value to the target value.

Abstract: A throttle arrangement comprising at least one first throttle element and at least one second throttle element, wherein the first throttle element and the second throttle element are connected in series, wherein the first throttle element has a first pressure loss coefficient which correlates positively with a volume flow passing through the throttle arrangement, and the second throttle element has a second pressure loss coefficient which correlates negatively with the volume flow passing through the throttle arrangement.

Abstract: A gas control valve (1) has a central module (40), a control module (20) and a sensor module (30). Gas can flows through the central module (40) from a valve inlet (41) to a valve outlet (42). The control module (20) is directly on the central module (40) and controls a flow of the gas through the central module (40). A throttle element (23) is fluidically arranged between the valve inlet (41) and the valve outlet (42). The sensor module (30) is arranged directly on the central module (40) and has at least one sensor (31, 32) in operative connection with the gas flowing through the central module (40) through a gas inlet (44) fluidically arranged between the throttle element (23) and the valve outlet (42). In order to control the pressure, it detects a pressure difference between the gas flowing through the central module (40) and air having a reference pressure.

Abstract: A method for the failsafe and lean ignition of a fuel gas-air mixture on a gas burner (6), which is mixed in a mixing device (4) arranged upstream of the gas burner (6). A control valve (2) along the fuel gas flow path has an actuator (21) and a throttle element (23), moved by the actuator (21), for the closed-loop control of a flow rate of the fuel gas flowing into the mixing device (4). A test is performed to determine whether the throttle element (23) is in the throttle reference position when the actuator (21) is in the actuator reference position. The throttle element (23) is moved in a flow rate-increasing manner starting at a start time (tD). The flow rate-increasing movement of the throttle element (23) is stopped as soon as at least one of multiple predetermined termination conditions occurs.

Abstract: A method for evaluating a quasi-stationary pressure difference detectable by a sensor at a gas boiler. The gas boiler has a mixing device (4), a fan (5), a main flow regulator (3), .a control valve (2) and a safety valve (1). The sensor detects a differential pressure between a pressure (p2) at a measuring point upstream of the main flow regulator (3) and downstream of the control valve (2) and a reference pressure (p0, p1) at a reference measuring point. The sensor transmits a signal to an electronic evaluation system. The electronic evaluation system compares the differential pressure during a pre-purge phase, wherein the safety valve (1) is closed, with the differential pressure after the pre-purge phase and detects an error by the comparison.

Abstract: A method for detecting faulty operation of a gas blower driven by an electronically commutated DC motor. The DC motor of the gas blower is controlled by an integrated electronic motor control circuit. The electrical current draw, required in operation to reach a predetermined blower speed of the gas blower, is measured. It is measured as a measured variable via the electronic motor control circuit. The electronic motor control circuit performs a plausibility check of the measured electrical current draw. The measured value of the electrical current draw, at a predetermined blower speed, is compared to a current draw reference value characteristic stored in the electronic motor control circuit. Thus, a warning and/or an error code is issued by the electronic motor control circuit. The warning is based on deviation of the measured value of the electrical current draw beyond a tolerance range around the reference characteristic.

Abstract: A method for detecting faulty operation of a gas blower driven by an electronically commutated DC motor. The DC motor of the gas blower is controlled by an integrated electronic motor control circuit. The electrical current draw, required in operation to reach a predetermined blower speed of the gas blower, is measured. It is measured as a measured variable via the electronic motor control circuit. The electronic motor control circuit performs a plausibility check of the measured electrical current draw. The measured value of the electrical current draw, at a predetermined blower speed, is compared to a current draw reference value characteristic stored in the electronic motor control circuit. Thus, a warning and/or an error code is issued by the electronic motor control circuit. The warning is based on deviation of the measured value of the electrical current draw beyond a tolerance range around the reference characteristic.

Abstract: A commercial vehicle has its axle housings supported on the chassis frame by way of spring elements. Each spring element is connected to a clamping yoke having two legs, of which in each case one leg rests against the front of the axle housing and the other leg rests against the rear of the axle housing, as seen in the driving direction. The legs are connected to one another by a web. Each leg is fixed and secured on a fixing projection on a longitudinal side of the axle housing, and the web is spaced apart from the upper side of the axle housing.

Abstract: A commercial vehicle has its axle housings supported on the chassis frame by way of spring elements. Each spring element is connected to a clamping yoke having two legs, of which in each case one leg rests against the front of the axle housing and the other leg rests against the rear of the axle housing, as seen in the driving direction. The legs are connected to one another by a web. Each leg is fixed and secured on a fixing projection on a longitudinal side of the axle housing, and the web is spaced apart from the upper side of the axle housing.

Abstract: A method for producing a stator for electric machines, wherein a plurality of coils (10) is prewound and drawn into a stator lamination package. Subsequently the wire ends (14) of the coils (10) are fixed in place in a predetermined position. In order to be able to interconnect the wire ends or to fix them more dependably and faster in place at the terminals or auxiliary terminals provided, it is proposed that they are temporarily connected with a holding element (34) immediately after a coil (10) or group of coils has been wound, that this connection is maintained during the draw-in of the coils (10) into the stator lamination package, and that thereafter the wire ends (14) are mechanically transferred into their predetermined position.