Title: Torsional vibrations in heavy-duty truck powertrains with dual mass flywheels

Authors: Lina Wramner

Addresses: AB Volvo, Group Trucks Technology, SE-405 08, Sweden

Abstract: Many of the measures taken to improve combustion engine efficiency lead to higher torsional vibrations. For heavy-duty commercial vehicles it is foreseen that the conventional flywheel and clutch will not be able to sufficiently reduce those increased engine torsional vibrations to the driveline. In this paper, the steady-state torsional vibrations in a heavy-duty truck powertrain are studied. The focus is engine excited vibrations at high load within operating speed range. Vibration phenomena in a conventional heavy-duty powertrain and in powertrains equipped with dual mass flywheels are studied. It is shown how the use of a dual mass flywheel can enable down-speeding and increased engine torque with maintained or reduced levels of torsional vibrations.

Keywords: torsional vibrations; powertrain; driveline; heavy-duty truck; dual mass flywheel; DMF; dual mass flywheel; resonances; simulation.

DOI: 10.1504/IJHVS.2021.120912

International Journal of Heavy Vehicle Systems, 2021 Vol.28 No.5, pp.585 - 611

Received: 28 Nov 2018
Accepted: 09 Mar 2019
Published online: 17 Feb 2022 *

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