Period: 2020-2022

Cooperation: MAGNA

As part of this research project with MAGNA, a comprehensive simulation of a mild-hybrid powertrain is being developed, integrating a state-of-the-art control strategy and an optimized energy management system. The goal is to evaluate the drive-off process not only based on technical and ecological criteria but also considering subjective human perception. This approach ensures that both driving comfort and sustainability aspects are incorporated early in the powertrain development and calibration process.

Methodology and Research Approach

For this study, a vehicle model with a mild-hybrid powertrain is built in Matlab/Simulink® to simulate different drive-off profiles. These profiles vary in terms of maximum acceleration and mean jerk, which define the characteristics of the drive-off behavior. The subjective perception of these profiles—such as comfort, sportiness, and jerkiness—is quantified using objectivation models. Simultaneously, an ecological assessment of the drive-off process is conducted, considering fuel consumption and thermal load in the drive-off element to analyze the impact on efficiency and component lifetime.

A central aspect of this research is the objectivation of subjective evaluation criteria. By systematically converting subjective perceptions into measurable parameters, vehicle dynamics can be mathematically analyzed without the need for additional test subject studies. At the same time, ecological aspects are examined, particularly the influence of different drive-off styles on fuel consumption and thermal load in the powertrain system.

Research Objectives

This research project with MAGNA aims to provide a comprehensive evaluation of the drive-off process in a mild-hybrid powertrain, combining subjective perception, ecological e