Synergieprogramm für Bremsen und E-Antrieb im ZF-Versuchsfahrzeug: Optimierung des elektrischen Antriebs mit dem Bremssystem, um die Energierückgewinnung zu optimieren.
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ZF test vehicle equipped with the braking and e-Drive synergy program: Optimizing the electric drive with the braking system to harness energy recuperation.
Two new software solutions from ZF for better networked and more efficient commercial vehicle technologies: One serves to optimize the interaction of the electric driveline with the EBS brake management functions. The other increases recuperation performance. More specifically here:
Synergy program for brakes and eDrive: recuperation can be used to effectively increase the range of the electric vehicle or reduce the size of the batteries required. The synergy program developed by ZF coordinates the electric drive and braking functions in order to optimize recuperation under full stability control. In this way, increases in efficiency, safety and comfort can be achieved, while the total cost of ownership (TCO) is reduced.
The system combines the modular, electric ZF drives with the innovative mBSP XBS braking system. Here, the electric drive serves as an actuator for the braking system and vice versa, so that the capacities of both systems are used for the effective control of acceleration and braking processes. The system maximizes energy recovery to recharge the batteries while driving, effectively increasing the vehicle’s range. The system also offers “one-pedal operation” functionality, increasing driving comfort, especially during slow maneuvers, such as for vehicle applications in logistics centers or inner-city driving.
By optimizing the traction control, the system also offers improved starting functions, which reduces tire wear and improves vehicle performance on slippery surfaces.
Software Brake Resistor: ZF has developed a software solution that eliminates the need for hardware brake resistors in pure battery electric vehicles. The new software function intelligently limits the maximum energy content of the battery and thus ensures that additional energy generated by regenerative braking can actually be stored in the vehicle batteries.
Equipped with location data, the software takes the route into account in order to be able to store energy in the batteries for foreseeable longer downhill journeys, for example. If the first journey is a long downhill section, the batteries are not fully charged.
Thanks to this innovation, no further braking resistors are required, while energy efficiency is maximized and all the energy is available for the drive. This solution saves around 150 kg in weight and frees up additional installation space in the chassis. The system shows how an intelligent server and cloud-based function can save costs and weight while improving efficiency and sustainability.
