This paper presents the methodology adopted by Politecnico di Torino Vehicle Dynamics Research Team to obtain objective indices for the evaluation of the comfort during the gear change process. Some test drivers and different passengers traveled on a test vehicle and assigned marks on the basis of their subjective feeling of comfort during the gearshifts. The comparison between the most significant subjective evaluations and the experimental values obtained by the instruments located on the vehicle is presented. As a consequence, some indices (based on physical parameters) to evaluate the efficiency and the comfort of the gearshift process are obtained. They are in good agreement with the subjective evaluations of the drivers and the passengers. The second part of the paper presents a driveline and vehicle model which was conceived to reproduce the phenomena experimented on the vehicle. The experimental validation of the model is presented. This model can be adopted to evaluate the weight of each parameter of the driveline and the vehicle in determining the performance of the system in terms of comfort during the gearshift process.

An Objective Evaluation of the Comfort during the Gear Change Process / Galvagno, Enrico; Morgando, Andrea; Sorniotti, Aldo; Velardocchia, Mauro; F., Amisano. - In: SAE TECHNICAL PAPER. - ISSN 0148-7191. - STAMPA. - SP-2134:(2007). ((Intervento presentato al convegno SAE World Congress tenutosi a Detroit (MI), USA nel April 2007 [10.4271/2007- 01-1584].

An Objective Evaluation of the Comfort during the Gear Change Process

GALVAGNO, ENRICO;MORGANDO, ANDREA;SORNIOTTI, ALDO;VELARDOCCHIA, Mauro;
2007

Abstract

This paper presents the methodology adopted by Politecnico di Torino Vehicle Dynamics Research Team to obtain objective indices for the evaluation of the comfort during the gear change process. Some test drivers and different passengers traveled on a test vehicle and assigned marks on the basis of their subjective feeling of comfort during the gearshifts. The comparison between the most significant subjective evaluations and the experimental values obtained by the instruments located on the vehicle is presented. As a consequence, some indices (based on physical parameters) to evaluate the efficiency and the comfort of the gearshift process are obtained. They are in good agreement with the subjective evaluations of the drivers and the passengers. The second part of the paper presents a driveline and vehicle model which was conceived to reproduce the phenomena experimented on the vehicle. The experimental validation of the model is presented. This model can be adopted to evaluate the weight of each parameter of the driveline and the vehicle in determining the performance of the system in terms of comfort during the gearshift process.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/1670427
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