[Data] Analysis of Vehicle Motion in Chassis Dynamometers (Report 2)

Evaluation of the load on the vehicle from CHDY, which is considered to affect the vehicle's pitching motion!

The chassis dynamometer (CHDY) is widely used as a system that can reproduce real road driving conditions indoors and evaluate the driving performance of completed vehicles. In this document, we evaluated the pitching motion of the vehicle during rapid acceleration and sudden stops using a vehicle restraint device that allows vertical and rotational motion near the center of gravity, a roller surface treated with high-friction material, and CHDY with different electric inertia control responses. In the analysis of the vehicle's pitching motion, we analyzed the behavior of the vehicle body and the engine behavior inside the vehicle through multi-point non-simultaneous measurement modal analysis. In the driving condition, we report on the low-frequency vibrations of the vehicle caused by rapid operation of the accelerator pedal, comparing the results from real road driving conditions and CHDY experiments. [Contents] ■ Preface ■ Analysis of vehicle pitching motion during rapid acceleration and sudden stops ■ Analysis of low-frequency vibrations of the vehicle due to accelerator pedal operation ■ Summary *For more details, please refer to the PDF document or feel free to contact us.

Other analysesothers