Electric Vehicle Corner Architecture: Driving Comfort Evaluation Using Objective Metrics
2022-01-1119
03/29/2022
- Event
- Content
- The transportation sector now faces several technological and societal challenges; the most urgent one is a shift to carbon-neutral mobility. One of the most efficient ways to reach this goal is car electrification. Vehicle corner architecture with an in-wheel motor is a promising stage of technological development for a new generation of electric vehicles. The state of art analysis indicates that a higher degree of integration between powertrain and chassis and the shift towards corner solution promises improved performances regarding new vehicle architecture design, energy efficiency, vehicle stability, reducing the overall system's weight. However, in-wheel mounted electric motor significantly increases unsprung vehicle mass; therefore, some undesirable impact on chassis loads and driving comfort occur. A possible solution lies in implementing cooperating active corner systems, which are not limited by traditional active suspension and brake-by-wire but can also include an advanced system as active camber and toe angle control. However, the introduction of these new systems should be subjected to careful value analysis. Sport utility vehicle was used as a reference during the investigation. A new, improved rear suspension design with in-wheel motors was developed and tested using multibody dynamic simulation. The possibility of implementing active suspension components and integrated wheel positioning control that may lead to higher comfort and be used for automated driving is analysed using a wide range of driving scenarios and objective metrics for driving comfort evaluation. Additionally, handling and stability tests are performed. A comprehensive assessment of in-wheel motor based architecture formulated from a driving comfort perspective is helpful for further electric vehicle corner development.
- Citation
- Žuraulis, V., Kojis, P., Marotta, R., Šukevičius, Š. et al., "Electric Vehicle Corner Architecture: Driving Comfort Evaluation Using Objective Metrics," SAE Technical Paper 2022-01-1119, 2022, .