BRIEF INFORMATION Wheel speed sensors

Application Applications for most relevant truck, bus and trailer manufacturers: Mercedes-Benz, DAF, Iveco, Scania, Volvo, Renault, MAN, Irisbus, Neoplan, Otokar, Paccar, Yutong, Hyundai, Mack, Peterbilt, Solaris, Tata, Krone, Kogel, Schmitz Cargobull, Schwarzmüller, Liebherr, BPW, SAF, Meritor, Valx. Design and function The wheel speed sensor (ABS sensor) is an inductive, passive sensor composed of a permanent magnet, copper winding, a case and an electric cable with dedicated socket which works without power supply. ABS sensors usually have cables with or without protection covers, lengths of different sizes and sensor angles at 90 degrees or straight.

The wheel speed sensors are mounted directly above the pulse wheel connected to the wheel hub or drive shaft. The pole pin, which is surrounded by a winding, is connected to a permanent magnet, whose magnetic effect extends to the pole wheel. The rotational movement of the pulse wheel and the associated change of tooth and tooth gap cause a change in the magnetic flux through the pole pin and the winding. This changing magnetic field induces a measurable alternating voltage in the winding (see diagram on the right).