Act-by-wire

Act-by-wire

Along with the electrification of the powertrain and new purely electric vehicle platforms, car manufacturers are shifting their focus to creating a unique user experience, including new interior design concepts. Act-by-wire technology, which includes brake-by-wire and steer-by-wire systems, replaces the mechanical connection between steering wheel and steering actuator as well as the connection between brake pedal and brake actuators by electrical signal lines. This offers new degrees of freedom for new HMI concepts and for optimizing the vehicle design with regards to NVH, manufacturing and safety.

System supplier for brake-by-wire and steer-by-wire solutions

Act-by-wire portfolio

Act-by-wire portfolio

Bosch’s solution of act-by-wire technology includes brake-by-wire and steer-by-wire systems. As an experienced system supplier, Bosch has all the required products and competencies in the areas of chassis, brakes, steering, and electrical systems.

All by-wire systems are redundant systems with regards to logic, power supply, and communication. Furthermore, Bosch’s vehicle motion management software can control the different actuators.

Act-by-wire system features

Additional functionalities

  • New safety, agility, and comfort features including improved lateral dynamics, individual road feedback, and active collision avoidance

  • Ready for automated driving and continuous updates

New HMI devices and additional interior space

  • Stowable steering wheel and pedals
  • Smaller steering wheel/new steering wheel shapes

  • Innovative brake pedal designs with reduced pedal stroke
  • More free space at the firewall and flexible positioning in the engine compartment

Increased passive safety

  • Crash-optimized design and positioning of actuators
  • Improved passive safety due to fewer and smaller components

Standardization

  • Reduced front body complexity and fewer variants in vehicle production, e. g. for left/right-hand drive

  • Compatible with different drive trains

PRODUCT BENEFITS FOR VEHICLE MANUFACTURERS

  • Crash-optimized design
  • More interior space

  • Significant reduction in complexity and system variance at the vehicle level across the whole platform and all driving modes, solving installation issues in left-hand and right-hand drive vehicles

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