Introduction
This will be electrically wheel ZF drive torsion beams as a case to analyze electric drive wheel torsion beam. Torsion beam wheel electric drive, small size, light weight is its advantage, but this equipment can also be constituted of the rear axle or four-wheel drive hybrid system.
● electric drive torsion beam structure
This electric wheel drive ZF suspension torsion beam size is not large, is designed for micro, small car development. It will drive motor, wheels, shock absorbers integrated as a whole, is not that big of micro, small cars for more space.
of the suspension spring is an essential part of its body play a supportive role. ZF The system also has a spring, but spring is a composite material, which not only provide the same support with steel spring force, and a strong competitive advantage in weight. In addition, the shock absorber also used aluminum material, the entire axle lighter.
one on each side up to 20,000 revolutions / minute DC synchronous motor, via two drive hub reduction apparatus, using cooling water cooling the entire system can reach peak power 60kW . Position of the motor closer to the torsion beam, the wheel motor is reduced compared to the unsprung mass.
axles on the stand using drum brakes. ZF engineers tell me they can OEMs need to replace the disc brakes.
● may be implemented a hybrid or electric four-wheel drive system
ZF torsion beam suspension and drive motor are integrated into a total so, which makes it easier to replace conventional rear suspension. If it is mounted on a conventional dynamic models, add a power supply apparatus, it may become hybrids; if the precursor is mounted on the electric vehicle, an electric four-wheel drive system may also be implemented. However, resulting from official sources show that this system is still in the validation phase.
Summary:
First, small electric drive is the most basic advantages of torsion beam, it eased the tension of the small car space. Secondly, thanks to highly integrated design, only need to replace the conventional suspension after the system can be transformed into a hybrid vehicle or an electric four-wheel drive system to achieve, very convenient. As the weight problem, an aluminum composite material of the spring and the shock absorber is balanced by the weight of the two motors.