Verification of market suitability of ultra-low-floor light duty BEV trucks for last-mile delivery

Yusuke Takenaka (Hino Motors)

HINO Motors have developed and launched the ultra-low-floor small BEV truck "Dutro ZEV" that solves vehicle issues at logistics sites in last-mile delivery while also achieving a carbon-free environment.
In this presentation, we will report on the results of verification of market suitability for the vehicle concept and performance/function specifications, and propose future challenges.

Air Conditioner Drive System for Dual-motor EV Using Planetary Gear Transmission

Noritaka Matsuo (Matsuo Engineering Office)

In an EV equipped with an air conditioning system that directly cools the entire drivetrain with refrigerant, energy consumption of a conventional electric compressor system with integrated motor and compressor and a motor-compressor separated drive system in which the power of two traction motors is split into for traction and for compressor drive by a planetary gear transmission was compared by simulation, and the separated drive system proved to be better.

Development of Interactive Manual Drive

Yoichiro Isami･Tatsuya Imamura･Ryohei Yuasa･Toru Shinagawa･Yuji Iwase (Toyota Motor)

A device for shifting in BEVs and a control system that generates vehicle responses (such as driving force, sound, and meter) based on the driver’s actions have been developed, enhancing the joy of driving (including power control, shifting operations, and shifting feel). By applying a simple physical model to the control system, a highly extensible platform has been created, allowing for the development of diverse configurations.

The Formula One Turbo Hybrid Engine has calculated and measured Efficiency of 50% (The Third Report)
-Use of Synthetic Gasoline in Formula 1 Final suggests Solution to Oil Depletion Problem-

OSAMU FUJII (Renewable Energy Research Institute TRB)

The Formula 1 Engines are turbo hybrids with 1040 horsepower and an measured efficiency of 52.3%. The fact that the winning team in the 2021 Formula 1 finals achieved this efficiency using synthetic gasoline proves that synthetic gasoline has the highest efficiency and maximum output. Since synthetic gasoline is made from renewable energy, it can be used forever, suggesting that the problem of oil depletion can be solved.

Development of a prediction method for oxidative degradation performance in coolant for electric vehicles

SHINYA ASAURA･HIROYUKI HISATA･YASUAKI KODAMA･MIKIO TAKEDA･YUJI NOYORI･KAZUMI SUZUKI (Toyota Motor)

As vehicle development becomes more complex, using actual machine-based development methods leads to an increase in workload. Therefore, simulations are being utilized; however, simulating the time-series degradation of coolants, which involves chemical changes, is challenging. In this study, we developed a method to predict the time-series degradation of coolants by utilizing known data about the basic properties of materials and 3D fluid simulations.