Sensors
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Product information
Accurate Data from Every Part of the Vehicle
Sensors supply the electronic stability control unit (ABS, ABSR, ESP) with information about the current driving situation (wheel traction, steering angle and longitudinal/lateral acceleration). This effectively makes sensors the "eyes and ears" of electronic stability systems.
Precise and Non-Contact: Steering Angle Sensors
Function:
- Steering angle sensors record the steering angle without contact
- Use in ESP®, steering systems, active steering
Advantage:
- Safety: The highest measurement accuracy through low tolerance values
- Comfort: Signal refresh frequency adjustable to system requirements
- Driving sensation: Modular expansion of functions, e.g. for all-wheel-drive
Accuracy that Matters: Yaw Rate Sensors
Function:
- Yaw rate sensors record the rotary motion of the vehicle along the longitudinal, vertical and lateral axes
- Used in ESP®
Customer Benefits:
- Safety: High level of resistance against vibrations
- Comfort: CAN interface with high signal update rate
- Driving sensation: Numerous values can be determined by the sensor signals,
Integral to Modern Driving Safety: Wheel Speed Sensors
Function:
Bosch launched the first ABS anti-lock braking system onto the market in 1978. Now, all newly-certified cars in Europe are equipped with an anti-lock braking system. In addition, many of today's vehicles also feature an ESP® anti-skid system. Important components in these electronic safety systems include sensors, such as the wheel speed sensors that record the rotary speed of the wheels.
Customer benefits
Defective wheel speed sensors can today be exchanged simply, quickly and safely by any workshop. To complement the wide range of first-class sensors, Bosch also offers the necessary diagnostics systems and detailed step-by-step instructions for exchange.
Nowadays, Bosch produces more than 250 million sensors a year worldwide for a diverse range of tasks in the vehicle. Around a third of all wheel speed sensors used in new vehicles are manufactured by Bosch.
"The Eyes and Ears" in Modern Driving Safety Systems: Wheel Speed Sensors
Function:
- Wheel speed sensors transmit the most important data for safe ABS/ESP® control.
- They deliver information on the wheels' rotation characteristics to the ABS/ESP® control unit.
- They are exposed to extreme loads: They are installed close to the wheels and come into direct contact with splashing water.
- Consequently: Wheel speed sensor errors occur more frequently
Customer Benefits:
Quality:
- Improved resistance to external magnetic influences
- 100% flexible design (connector, sensor head, air gap, etc.) allows bespoke applications
- Worldwide standardized square-wave output signal of 7 / 14 mA for active sensors
Safety:
- Speed detection down to nearly 0 kph
- Direction of rotation and standstill detection when sensors are active
Quality:
- Improved resistance to external magnetic influences
- 100% flexible design (connector, sensor head, air gap,...) permits custom applications
- Globally-standardized square-wave output signal of 7 / 14 mA for active sensors
Safety:
- Speed detection at close to 0 km/h
- Recognition of direction of rotation and standstill with active sensors
Acceleration Sensors
Function:
For acceleration measurements, the physical effect is used so that force acts on the accelerating objects. Provided these objects are not rigidly fixed, but instead "elastically", then they are shifted by the applied force. The resulting deviation is a measurement for the acceleration. The Hall effect acceleration sensor is particularly well-suited for measuring lateral acceleration.
