The Evolution of Power Unit Development Process through MBD (First Report)
-Standardization of 1D-Model and Application in Power Unit Development-

Kenichiro Ogata･Akihiro Katsuura･Minako Tsuji･Go Toshizane･Satoshi Watanabe･Hiromu Iwase･Takumi Matsumoto (Honda Motor)

To achieve the high efficiency of power unit development through the application of MBD, 1D system model that can flexibly respond to the refinement of model granularity and domain extension is necessary. The refinement of model granularity requires 1D sub-system models, and domain extension requires models with expanded behavioral representations. This paper presents an initiative for standardizing the 1D system model and discusses the evolution of the development process by applying a virtual development environment that integrates the 1D sub-system models and the expanded behavioral models to power unit development.

The Evolution of Power Unit Development Process through MBD (Second Report)
-Development and Application of a Coupled Simulation Environment for Engine Control System Development and Calibration using Engine Plant Model-

Akihiro Katsuura･Kenichiro Ogata･Minako Tsuji･Hidekazu Hironobu (Honda Motor)

To improve the high efficiency of power unit development through the application of MBD,1D system model that can flexibly respond to the refinement of model granularity and domain extension is necessary. The refinement of model granularity requires 1D sub-system models.
This paper presents an initiative where a model coupling the 1D sub-system model with the engine plant model and the control model was constructed and applied to engine control development and calibration.

The Evolution of Power Unit Development Process through MBD (Third Report)
-Application of Response Surface Models to Accelerate Coupled Simulation for Engine Control System Development and Calibration-

Tsuji Minako･Akihiro Katsuura･Kenichiro Ogata･Hidekazu Hironobu (Honda Motor)

Real-time model has been proposed to accelerate a engine plant model, and it has been utilized for engine control system development and calibration by coupling with a controller model. To expand its use in analyses that require more accuracy, simulation results of a detailed engine plant model and response surface models were used to achieve both of the calculation speed and accuracy requirements.

The Evolution of Power Unit Development Process through MBD (Forth Report)
-Driving Strength Analysis Using 1D System Model and Application in Power Unit Development-

Go Toshizane･Kenichiro Ogata･Masatoshi Okuda･Yuto Otsuki (Honda Motor)

For highly efficient power unit development, it is important to construct a detailed 1D system model and predict vehicle performance in the performance design phase, considering market usage conditions. Market load forecasting technology using market data, which has been increasingly utilized in the automotive industry in recent years, is indispensable for highly accurate performance prediction. In this study, we developed a simulation technology that can analyze market driving strength by using a 1D system model and market data. Furthermore, we describe how the representative data extracted from the driving strength analysis results can be used to predict vehicle performance.

Evolution of the Power Unit Development Process through MBD Fifth Report
-Construction of an Interior Noise Prediction Model Coupled with a 1D System Model-

Satoshi Watanabe･Kenichiro Ogata･Hiromu Iwase (Honda Motor)･Taketo Maeda･Kazuya Kawada (Auto Technic Japan)

Noise and Vibration development of two-motor hybrid systems, in which the engine mainly generates electricity, is important not only for hardware development but also for control development. The NVH simulator coupled with a 1D system model was utilized for control development in the initial stage of the two-motor hybrid system development to reproduce the interior noise during acceleration and enable auditory judgment.