Table of Contents
What is a rotational speed sensor?
Rotation speed sensors are used to monitor, regulate and control mechanical drive systems and play a major role when it comes to protecting elements of a rotational system (e.g., in the engine, drive) from mechanical overload.
What are the different types of wheel speed sensors?
Currently, two types of wheel speed sensors are in use: magnetic inductive (passive) and magneto resistive (active). Passive sensors have been around since the early days of the anti-lock brake system (ABS). These are the sensors that function on the generator principle.
What is the function of the wheel speed sensor?
Active wheel-speed sensors are an integral part of brake control systems. They detect the rotational wheel speed of vehicles using a non-contacting measurement principle.
How long do wheel speed sensors last?
between 30,000 and 50,000 miles
There’s no hard-and-fast rule to help you predict how long your wheel speed sensor is going to last. Unlike a brake light switch or brake caliper that can last as long as your vehicle, you can expect your transmission speed sensor to last between 30,000 and 50,000 miles.
What is the difference between an active and a passive wheel speed sensor?
ABS sensors are classified in to two different types, Passive and Active. Passive is without a power supply and Active is with a power supply. These comprise of a wire coil wound around a magnetic core and a permanent magnet.
Can you clean a wheel speed sensor?
With the sensor free, take your rag and wipe the sensor until it’s clean. I prefer not to use any chemicals on the sensor to avoid potential problems. If, however, the sensor is really grungy, use a mild soapy solution and rinse well.
What causes a faulty wheel speed sensor?
Corrosion, affecting the air gap spacing and weakening the sensor’s signal strength. Road debris blocking the sensor, rendering it inoperative or causing mechanical damage. Particles of metallic debris attached to a wheel speed sensor magnetic encoder ring. Contaminated wheel speed sensors.
What causes a wheel speed sensor to fail?
What is the main benefit of an active wheel speed sensor when compared to a passive one?
Active wheel speed sensors used to look the same as passive sensors, but they are much more accurate at lower speeds. Active sensors output a digital signal, a DC square wave signal.
What is a disadvantage of an analog wheel speed sensor?
Some of the drawbacks of the passive-type wheel speed sensor are its inability to operate at very low speeds or in reverse. This is one of the many reasons why most manufacturers have gone to active wheel speed sensor systems. Sensor Type.
How does the Bosch wheel-speed sensor work?
They detect the rotational wheel speed of vehicles using a non-contacting measurement principle. For its wheel-speed sensors, Bosch offers different standard sensor heads suitable for various customer applications. The wheel-speed sensor complies with the requirements of highly automated driving.
Why Bosch Motorsport sensors?
No victory without high precision information. Sensors from Bosch Motorsport provide those. Whether rotational speed, temperatures, pressures or other physical quantities: here you will find the ideal sensor for your project. Proven millions of times and adjusted to the special requirements in motorsport.
How do our speed sensors work?
Our speed sensors are either working inductive or according to the Hall principle. They acquire the rotational speed of wheels, camshafts, crankshafts and turbochargers. Our combined pressure sensors not only measure the air pressure, but also the temperature of the surrounding medium.
What is the function of the rotational and linear acceleration sensor?
This combination of rotational and linear acceleration sensors enables a precise measurement of the vehicle dynamics. The main feature and benefit of this sensor is the combination of 3 linear and 2 rotational accelerometers and its high speed 1 Mbaud CAN-signal output.