Pierburg Gmbh

Pierburg Ag

Ti Automotive (neuss) Gmbh

Ti Automotive Limited

Norbert Ludwig

Frank Buerger

Michael Sanders

Hans-Ulrich Kühnel

Alfred Kleinen

Frank Bürger

Harmut Witte

Frank B&uuml;rger

Frank BÜRGER

Christoph Peiffer

An actuating device for actuators, such as switching, throttle or swirl flaps, in internal combustion engines for motor vehicles comprises a shaft connected with an actuating motor. The shaft is connected with an actuator, such as a switching flap or the like. In a predetermined position relative to the shaft two pin-type magnets are arranged and preferably connected with a partly toothed gearwheel. When the shaft is rotated, the pin-type magnets move relative to a preferably fixed magnetic field sensor. The magnetic field sensor is a linear Hall sensor. Provision of a linear Hall sensor allows three different shaft positions to be determined. The positions are the two shaft positions defined by the pin-type magnets in which the magnets are arranged opposite the Hall sensor, and a position in which the location of the pin-type magnets does not allow the Hall sensor to detect a magnetic field. In the latter position the linear Hall sensor has a defined bridge voltage.

Switching flap device

In a method for controlling a switching flap () arranged in an intake pipe connected with an internal-combustion engine the switching flap () is rotated with the aid of a switching-flap shaft () connected with an electromotor (). With the aid of a position-detecting device () an end position of the switching flap () is detected. Subsequently, a rotation force is continued to be applied to the shaft () to hold the switching flap () in the end position. For detecting a breakage of the switching-flap shaft (), an error message is generated when the switching-flap shaft () continues to rotate beyond the end position.

Method of controlling a switching flap, and a switching-flap actuating unit

A level transmitter for liquid containers, particularly fuel store tanks, comprising a housing in which a contactless sensor is arranged which is connected with an evaluating unit and operatively connected with a magnet that moves relative to the sensor when a float arranged at a first end of a lever moves so that the change of the magnetic field acting upon the sensor is transformed into an electric signal so that an output signal corresponding to the level of the liquid in the container is obtainable by the evaluating means. The magnet is configured at least as a segment of an annular magnet that is arranged at a second end of the lever and integrated therein.

Level transmitter

The invention relates to an adjustment device () for an internal combustion engine, particularly for adjustment of shafts with adjusting members. Heretofore known open/close switches are relatively large and cost-intensive in their production. For this reason, an adjustment device () is proposed, in which a set of gears () simply comprising a worm () and a partial ring worm gear () wherein pin magnets are disposed on the partial ring worm gear. The pin magnets () work functionally together with a non-moving switch () disposed in a housing () when a signal is produced by means of the magnetic field of the magnets () passing by the switch (), which stops motor () and, as the case may be, predetermines a direction change. Thus, a right/left movement of the motor (), along with a timely turning off of the motor can be achieved with only one external control signal.

Adjustment device for an internal combustion engine

The invention relates to a control device for a motor for adjusting a control unit. A motor () that serves for adjusting a control unit () is shut off in a known control device with at least one Hall switch, when the control unit () has achieved a desired position. In the aforementioned variant, it is proposed that the running direction of the motor () is determined by a signal (U) obtained from such a Hall switch, and, if necessary, the motor () is prepared for reversal.

Control device/mechanism for a motor for adjusting a control unit

A position sensor which is particularly suitable for the rotational angle detection of throttle or exhaust gas valves comprises a permanent magnet and at least two magnetic field sensors arranged adjacently to the permanent magnet. The magnetic field sensors are, for example, Hall sensors. By a relative movement between the permanent magnet and the magnetic field sensors, a position-dependent signal, for example in dependence on a rotational angle of the shaft, is produced. According to the invention, the two magnetic field sensors are arranged behind each other in field direction of the permanent magnet.

Position sensor

A measuring device for determining the position of a control element, such as a throttle valve in which a temperature-resistant Hal sensor (,) cooperates with a permanent magnet (,), which is connected to the control element by a spindle (,), in order to obviate the need for a conventional mechanical potentiometer. By virtue of the Hall effect, the Hall sensor (,) produces during movement of the control element and thus of the position of the permanent magnet (,) relative to the Hall sensor (,), an output signal (U,) that is preferably linearly proportional to the movement of the control element. The Hall sensor (,) is programmed to correct temperature, related measurement errors in the permanent magnet.

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Brueggen, Germany

Norbert Ludwig