Study on eco-driving method for BEV on real driving (2nd report: Energy consumption characteristics of light BEV on read driving)

Akira Kato･Hyo Yeon Yoon･Yuki Kumura (Teikyo univ.)

We conducted real driving tests in Utsunomiya City in the summer and autumn using light BEV, and analyzed the correlation between average vehicle speed, AC was on/off, and the frequency of acceleration, deceleration, idling, and cruising, and energy consumption, separately for urban, rural, and highway. We also compared the results with a standard BEV conducted last year to investigate eco-driving methods for light BEV.

The effects of various factors on fuel economy and driving range in a small commercial EV

Hisakazu Suzuki･Kenichiro Koshika･Shota Miyoshi (National Traffic Safety Environment Laboratory)･Tomonori Hasegawa (National Traffic Safety Environment Laborator)

EVs are highly compatible with home delivery and are becoming more and more popular. Although certified values for the driving distance, which is an issue with EVs, are made public, many businesses are concerned about their actual operation. Therefore, evaluation tests were conducted on small commercial EVs to examine the impact of factors that occur during actual operation, such as using air conditioners, on electricity consumption and changes in battery capacity.

Evaluation method development of drive control system function and performance by coupling the chassis dynamo and simulation software (VILS)

Akihiro Terao (Nissan Motor)･Toshiyuki Myochin (Nissan Motor)･Kazutoshi Miwa (Nissan Motor)

The new type of the vehicle evaluation method on the dyno bench has been established to evaluate the complicated electric drive system and improve the control adaption accuracy.
By combining the low-inertia, high-response chassis dynamometer and the vehicle dynamics simulation software, the dyno bench can simulate any type of road conditions.As a result, the new vehicle evaluation method can complete all requested test conditions and achieve the best control parameters adaption with eliminating the variations of road surface conditions that can happen in the normal proving ground test.

Evaluation review of a chassis dynamometer system for xEV testing (Third Report)
-On the purpose of standardizing the performance requirements and evaluation methods of chassis dynamometer test systems aimed at reproducing actual driving conditions.-

Noriaki Nakate (JATA)･Hisakazu Suzuki (NALTEC)･Isamu Inoue (Ono Sokki)･Tomonobu Furuta (Meidensha)･Yoku Hirose (HORIBA)

This report presents the plan to standardize a new methodology and evaluation index as Part 3 of the JASO E018 standard, which specifies chassis dynamometer control requirements and performance evaluation methods for reproducing actual driving fuel economy, electric power consumption, exhaust gas evaluation, and various driving conditions on test benches. This new standardization considers the power characteristics of xEVs (electrified vehicles) to enable high-precision evaluation for these vehicles as well.

Energy Optimization Method for Coordinated Operation of Household and Facility Using EVs and Shared Energy Storage System

Yuito Ohno (Nagoya University)･Shinkichi Inagaki (Nanzan University)･Tatsuya Suzuki (Nagoya University)

We propose an energy optimization method for the community including households and a large commercial facility by utilizing EVs and Shared ESS(Energy Storage System). The system assumes that households own EVs, while the facility owns a large-scale photovoltaic system and Shared ESS. By simultaneously optimizing EV transport, charging/discharging, and the trading price of Shared ESS, we successfully achieved a significant reduction in household electricity costs while keeping the facility’s costs suppressed.