Near-future motor sports EV concept "STI E-RA CONCEPT" unveiled at Tokyo Auto Salon
Subaru Tecnica International (STI) is an STI near-future motorsport study project "STI" with the aim of gaining experience and training in new technologies in the world of motorsports in a carbon-neutral era centered on global warming countermeasures. The "E-RA CHALLENGE PROJECT" has been launched, and the concept car of the "STI E-RA * 1" that has been under development in this project will be unveiled at the Tokyo Auto Salon to be held from January 14, 2022.
The first goal of this model is to challenge a lap time of 400 seconds (6 minutes 40 seconds) in a time attack at the Nürburgring circuit after 2023 after repeating driving experiments including domestic circuits in 2022.
In order for STI to further emphasize Subaru's uniqueness, such as "enjoyment of driving" and "absolute sense of security," the system will be up to 800kW (1088) by utilizing the knowledge of "all-wheel control technology," which is Subaru's strength. The high output of ㎰) is controlled by the newly adopted original 4-motor 4-wheel torque vectoring technology.
The motor adopts a gear for hyper EV supplied by Yamaha Motor Co., Ltd., a large torque high rotation type with an integrated inverter, and is driven by a lithium-ion battery with a storage capacity of 60kWh.
The unique torque vectoring system is a driver-oriented control that puts the enjoyment of driving as the most important issue, and by equalizing the balance to the grip limit of each of the four wheels, the grip level is raised to the maximum and the car body It is a technology to stabilize the posture.
In order to obtain the maximum effect, it is the best means to independently apply the optimum drive torque to the four wheels as the load moves, such as wheel speed, vehicle speed, steering angle, G, yaw rate, brake pressure, and wheel load. Signals from various sensors such as these are calculated in real time, the drive braking torque of each wheel is determined so that it becomes the target stability factor, and instructions are given to the inverter.
The structure that is highly responsive because the motors are directly attached to the four wheels and that can directly control the yaw of the car body is considered as a system that can maximize the vehicle kinetic performance, and future motor sports vehicles (FIA E- Since it is included in the regulation of GT), we consider it to be the optimal direction for us to work on.
In order to continue to create cars that everyone wants to drive safely and comfortably, STI will continue to challenge motorports and continue to refine its technology, and will utilize the knowledge gained from this project as an initiative for the future electrified society. increase.
STI will continue to create new value so that cars will continue to be enjoyable and enrich the lives of our customers even in such a decarbonized society.
