Improved Stability and Manoeuvrability using Electric Propulsion

Purpose and goal

The objective of the project was to answer the following research questions: - How can electric propulsion be used to improve vehicle dynamics? - What are the traffic and / or accident scenarios in which the enhanced vehicle dynamics can be used for increased safety? - How can electric propulsion be used to enhance traffic safety? The main goal has been to identify new active safety functions based on electric propulsion for improved traffic safety. The project also contributes to three of Vinnova´s targets for industrial competitiveness.

Expected results and effects

Six safety functions based on electric propulsion has been developed. These functions are Speed control, Longitudinal position control, Occupant posture control, Yaw moment control, Lateral position control and Longitudinal slip control. The project has developed and spread knowledge within the research field, partly through scientific reports and participation in conferences. The project has also contributed to enhanced dialogue between Chalmers and other research groups. Volvo Car Corporation has shown great interest and will participate in the next phase of the project.

Planned approach and implementation

Initially an analysis to identify the traffic safety benefits of electric propulsion compared to traditional propulsion with internal combustion engines was performed. Thereafter a study of accidents was made, which resulted in a scenario map with driving cases with a high potential for improved safety by means of electric propulsion. Some scenarios were studied in depth and the benefits were quantified. An example is the scenario where a vehicle is hit from the rear. A second example is a more complex scenario with obstacle avoidance associated with oncoming traffic.