Functional extention of an integrated FC system simulator "FC-DynaMo" by vehicle and battery model and controllers

Tomoaki Takagi･Toshikazu Ota･Kensuke Tsukahara･Yuji Yajima (MCOR Inc.)･Shigeki Hasegawa (Kyoto University)･Sanghong KIM (Tokyo University of Agriculture and Technology)･Miho Kageyama･Motoaki Kawase (Kyoto University)

FC-DynaMo, an integrated simulator developed for multiple applications of fuel cell (FC) systems, provides an integrated platform which consists of detailed component models and control functions for system-level analysis. In this study, the simulator was extended by the models which reproduce the dynamic behaviors of vehicle, Li-ion battery, and power-split controllers to track target vehicle speed. These extended functions were designed using publicly available information of 2nd-generation MIRAI (MIRAI-2) and it was validated that the developed simulator reproduced published vehicle performance, such as fuel economy and target speed tracking of MIRAI-2.

Proposal of Pedestrian Touch Vehicle Manipulation Control without Force Sensor for Low-speed Unmanned In-Wheel Motor EV

Hongyuan Xing･Daisuke Gunji･Binh-Minh Nguyen･Osamu Shimizu･Hiroshi Fujimoto (The University of Tokyo)

In environments where pedestrians and low-speed unmanned EVs operate cooperatively in close proximity—such as during vehicle summons in parking lots—precise position adjustments are frequently required. However, such situations are unavailable to handle using only conventional external sensors or remote operation. This study proposes a control method for an in-wheel-motor EV that enables intuitive vehicle manipulation through light physical contact, without using external or force sensors.

Development of a thermal management system for a new BEV

Yugo Motegi (Nissan Motor Co.,)

A thermal management system based on the concept of "utilizing heat without waste" was developed for a new BEV. This system utilizes the waste heat from the electric powertrain and batteries, and adopts a water circuit with multi-way valves to achieve efficient heat transfer for thermal energy utilization, including air conditioning. Additionally, by integrating with the navigation system for battery temperature optimization, it contributed to improved energy efficiency.

The Evolution of Power Unit Development Process through MBD (Tenth Report)
-Deployment of 1D System Model to Performance Verification Phase-

Kenichiro Ogata･Kentaro Yamanaka･Tomoaki Sasagawa･Tsuyoshi Maeda･Motoki Takahata･Kei Sakamoto･Go Toshizane･Keiji Shiota (Honda Motor)

To achieve resilient product development and to improve development efficiency of power unit development process, applying MBD throughout entire development is required. This study outlines a framework for applying standardized models from performance design phase to verification phase. Specifically, this study shows the standardized 1D system model application for verification facilities that included the power unit transient bench for verifying power unit performance, and the driving simulator for verifying the overall performance of the vehicle.

The Evolution of Power Unit Development Process through MBD (Eleventh Report)
-Improvement of Development Efficiency by Standardizing Power Unit Transient Bench-

Kentaro Yamanaka･Tsuyoshi Maeda･Motoki Takahata･Tomoaki Sasagawa･Kenichro Ogata (Honda Motor)

To improve development efficiency of power units, the utilization of Model-Based Development (MBD) throughout the entire development process are promoted. Calibration and performance verification are conducted under simulated vehicle driving conditions by leveraging a 1D system model and a Power unit Transient Bench (PTB). This study describes efforts to standardize the test environment aimed at further efficient utilization of PTB.

The Evolution of Power Unit Development Process through MBD (Twelfth Report)
-Drivability Performance Verification Using Power Unit Transient Bench-

TOMOAKI SASAGAWA･TSUYOSHI MAEDA･KENTARO YAMANAKA･SEIYA NAKASAKO･KENICHIRO OGATA (Honda Motor)

Honda is promoting Model-Based Development(MBD) throughout the development process to improve efficiency of hybrid power unit development. This study presents an evaluation methodology utilizing Powertrain Transient Bench (PTB) to assess drivability performance, which has traditionally been verified using prototype vehicles. The proposed framework ensures reproducibility and comprehensiveness under transient conditions.This approach enabled front-loading of development, reducing the number of prototype vehicles and shortening verification periods.