Concept design of electric cruise and startability axles for long haul heavy vehicles to maximise driving range
Paper i proceeding, 2021

Electrification of commercial heavy vehicles hasled to the offer of different electric drive-based powertrainarchitectures, most of them with the adaptation of the dieselengine based architecture. Due to the limited driving rangepossible, optimal configuration of the powertrain becomes avital task with the battery as the energy source, which alsotakes a significant portion of payload capacity. A modularand distributed powertrain architecture using separate cruiseand startability axles is introduced in this paper with theaim to maximise driving range. The concept is developed andevaluated using a joint hardware and control design frameworkfor a target vehicle combination of 36 tonnes over a typicalregional long haul drive cycle using simulations. Sensitivitystudy of gear ratios and motor sizes with vehicle targetrequirements is performed to identify the optimal configurationfor the powertrain concept. The simulation results show thatby configuring around50%of the total electric machine powerto the cruise axle and choosing a gear ratio between 12-13, therange capability is maximised, while satisfying startability andcruise mode operations.

Vehicle motion control

Vehicle dynamics


Vehicle propulsion

Energy efficiency


Sachin Janardhanan

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Leo Laine

Chalmers, Mekanik och maritima vetenskaper

Mats Jonasson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Bengt J H Jacobson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Mats Alaküla

Lunds tekniska högskola

2021 IEEE Vehicle Power and Propulsion Conference, VPPC 2021 - ProceedingS

978-1-6654-0528-7 (ISBN)

2021 IEEE Vehicle Power and Propulsion Conference (VPPC)
Gijón, Spain,

Konfigurerbara modulära elektriskt framdrivna ochavancerat aktuerade axelinstallationer för tunga fordon

Energimyndigheten (2019-027428), 2020-04-01 -- 2023-03-31.

Volvo Group, 2020-09-01 -- 2025-02-28.


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