Further study of the optimisation of the tractive efficiency of all-wheel-drive vehicles

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DOIResolve DOI: http://doi.org/10.1504/IJHVS.2014.061639
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TypeArticle
Journal titleInternational Journal of Heavy Vehicle Systems
ISSN1741-5152
Volume21
Issue2
Pages123151; # of pages: 29
SubjectDigital storage; Efficiency; Off road vehicles; Optimization; Vehicle wheels; Vehicles; All-wheel drives; Distribution of torque (thrust); Linear or nonlinear thrust-slip relationship; Tractive efficiency; Tractive performance; Wheeled vehicles; All wheel drive vehicles
AbstractThis paper examines the tractive efficiency of all-wheel-drive vehicles in general and the slip efficiency in particular. It focuses on the analysis of the conditions for achieving the optimal slip efficiency. Results of detailed theoretical analyses indicate that all drive wheels operating at the same slip will be the necessary and sufficient conditions for achieving the optimal slip efficiency, if their thrust-slip relationships are either linear or nonlinear with similar characteristics. If the thrust-slip relationships of the drive wheels are nonlinear with different characteristics, the optimal slip efficiency will be reached with the slips of the drive wheels not being equal. The basic findings of this investigation are substantiated with experimental data. The results of this study suggest that the requirement for all drive wheels operating at the same slip provides a reasonable basis for a practical control strategy of an active system to distribute torque (thrust) among the drive wheels to achieve the optimal (or close to the optimal) slip efficiency of all-wheel-drive vehicles under most operating conditions. Copyright © 2014 Inderscience Enterprises Ltd.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Automotive (AUTO-AUTO)
Peer reviewedYes
NPARC number21272123
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Record identifier93eb96b9-3ff7-4e43-8f15-ba2fd60a22c9
Record created2014-07-23
Record modified2016-05-09
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