Algorithms are just right: Bosch Vehicle Motion Intelligence System revolutionizes driving experience

Bosch Car Motion Intelligence provides solutions for greater safety, power, comfort and driving pleasure

• Hardware-software decoupled control enables vehicle motion control in six degrees of freedom.

• The vehicle motion intelligence system enables innovative, cross-domain functional and simplified vehicle architecture.

• The "Electronic Comfort Brake" function ensures smooth and jerk-free braking.

• Bosch offers brake-by-wire solutions and expands its braking portfolio to include brake-by-wire actuators.

Renningen, Germany - Helping to transform mobility and reshape the vehicle motion intelligence market with integrated chassis solutions to improve driving safety, power and convenience - this is the mission and goal of Bosch's Vehicle Motion Intelligence Systems Division. Since its establishment in 2024, Bosch's Vehicle Motion Intelligence Systems Division has brought together expertise and experience in multiple fields such as braking, steering, vehicle motion software, driving safety systems and vehicle dynamic sensors. In addition to braking and steering actuators, the division is also developing solutions that meet the requirements of software-defined vehicles and wire control technology, as well as cross-actuator vehicle control software (such as vehicle motion intelligence systems) and supporting services. Its product portfolio includes both hardware and embedded software, as well as independent software solutions. In this way, Bosch's Vehicle Motion Intelligence Systems Division can not only help vehicle manufacturers achieve innovative, cross-domain functional and simplified vehicle architectures, as well as new interior designs. At the 2024 Bosch Technology Day, the latest solutions presented by Bosch's Vehicle Motion Intelligence Systems Division:

Vehicle motion intelligent control system

As a cross-domain software system solution, the vehicle motion intelligent control system can control the vehicle's six degrees of freedom and coordinate the vehicle's braking, steering, power and suspension systems. The hardware-independent software functions can optimize vehicle dynamics, handling and efficiency. In addition, the vehicle motion intelligent control system also helps manage complex new vehicle architectures. The system integration software of the central on-board computer can control various actuators in different vehicle domains; at the same time, it improves driving safety and convenience by providing data-based services.

Electronic comfort brake

This software function can prevent the uncomfortable jerk during the vehicle's braking process, make frequent braking softer in congested traffic, relieve the discomfort caused by frequent starting and stopping to passengers, and prevent motion sickness. In addition, the electronic comfort brake software can significantly improve the noise when the vehicle brakes. By optimizing the control of the electric motor and brake system of electric vehicles, this software function ensures that the electric motor can smoothly stop the vehicle without the intervention of the hydraulic brake. Even if the hydraulic brake needs to be used, the transition from the motor brake to the hydraulic brake will not attract the attention of passengers.

Data services

The cloud-based and data-based service portfolio of the vehicle motion intelligence system includes the "road perception" service. This service uses the vehicle's sensor data to generate information about road conditions and road friction coefficients. This sensor data is merged with information from other vehicles and weather service data in the cloud to provide drivers with early warnings of road hazards such as slip, ice, potholes and speed bumps. In addition, this data-based and cloud-based service can also be used to automatically adjust the vehicle's motion posture in curves, as well as the driving strategy of safety and assistance systems, making driving safer and more comfortable.

Wire control technology

The wire control technology uses electrical signals for transmission, eliminating the mechanical connection between the steering wheel, brake pedal and the respective actuators of the steering and braking systems, thereby improving the comfort and integration flexibility of the vehicle and providing more possibilities for functional innovation: such as providing more intelligent system intervention in critical driving situations to reduce or even avoid the occurrence of safety accidents. In addition, the wire control technology provides an innovative human-machine interface and in-vehicle design, reduces the variables of left-hand and right-hand drive vehicles, and improves collision safety. To ensure safety, the wire control system introduces redundant design in actuators, power supply and communication. Combined with Bosch's vehicle motion intelligent control system, it can achieve a safer, comfortable and sustainable driving experience.

BBW

Bosch's new braking system, which consists of the brake-by-wire actuator BWA and ESP®, has safety redundancy and eliminates the mechanical connection between the brake pedal and the braking system. The braking command is transmitted from the electronic brake pedal to the brake-by-wire actuator and ESP® via redundant signal lines, and the interaction of the two components means that full braking performance is guaranteed in any situation. In the event of a failure, the brake-by-wire actuator BWA and ESP® can generate the required brake pressure on all four wheel brakes. In addition, the elimination of the mechanical connection between the brake pedal and the braking system opens up new possibilities for human-machine interface and in-vehicle design.

Brake-by-wire actuator BWA

The new brake-by-wire actuator BWA is based on mature hydraulic technology and can convert the driver's braking intention into actual action. The product is lightweight and does not need to be fixed to the firewall, so it can be installed on the vehicle very flexibly, making the vehicle design simpler and safer in the event of a collision, avoiding damage to the driver's legs. The brake pedal and the brake-by-wire actuator BWA can be connected via a wiring harness. The brake-by-wire actuator BWA provides braking pressure acting on the brakes of the four wheels, with low energy consumption, fast pressure building speed and precise control. It is particularly suitable for executing braking requirements from driving assistance functions and emergency braking AEB, and achieving a smooth transition from motor braking to hydraulic braking. As a second brake actuator, ESP® can control individual wheels when necessary to ensure vehicle stability.

Microbrake-by-wire pedal

The introduction of brake-by-wire technology and the elimination of the mechanical connection between the brake pedal and the brake system opens up new possibilities for the human-machine interface and interior design. The conventional brake pedal is replaced by a redundant micro-brake-by-wire pedal, which detects the brake request via sensors and transmits it as an electrical signal to the brake system. The innovative interior design is not only due to its simple and flexible integration, the Bosch micro-brake-by-wire pedal also helps make the driving experience safer, easier and more personalized.

Steer-by-wire

In the wire control steering system, the mechanical connection between the steering column and the steering gear is eliminated. The new system combines a steering wheel actuator and a steering rack actuator. By utilizing precise sensor technology, the steering wheel actuator can detect the driver's steering request and digitally transmit it to the steering rack actuator, so that the steering rack actuator will steer the wheel accordingly. In addition, the steering wheel actuator also provides feedback to the driver on the steering feel, including feedback information about the driving status and road surface. Specific signals such as ruts or potholes can be partially or completely filtered, weakened or even amplified according to the requirements of the vehicle manufacturer. In addition, the steering wheel actuator can also adjust the position of the steering wheel according to the driver's personal preferences, or in highly automated driving vehicles, completely retract the steering wheel within a limited time.