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A Study of Axle Fluid Viscosity and Friction Impact on Axle Efficiency
Technical Paper
2016-01-0899
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The growing need for improved fuel economy is a global challenge due to continuously tightening environmental regulations targeting lower CO2 emission levels via reduced fuel consumption in vehicles. In order to reach these fuel efficiency targets, it necessitates improvements in vehicle transmission hardware components by applying advanced technologies in design, materials and surface treatments etc., as well as matching lubricant formulations with appropriate additive chemistry.
Axle lubricants have a considerable impact on fuel economy. More importantly, they can be tailored to deliver maximum operational efficiency over specific or wide ranges of operating conditions. The proper lubricant technology with well-balanced chemistries can simultaneously realize both fuel economy and hardware protection, which are perceived to have a trade-off relationship.
In this study, Isuzu light duty truck axle, which is used in one of the highest selling cab-over vocational trucks in the global market, was tested on a full-scale axle test stand. The test stand was equipped with three electric motors and equipped and axle temperature control system. Two fluids, a commercial fluid of SAE 85W-90 (Fluid-A, Group-I with conventional additive) and the candidate fluid of SAE 75W-90 (Fluid-B, Group-III and the viscosity index improver and the new additive) were compared in this testing.
This work describes the impact of fluid’s viscosity grade, friction (or traction) and additive chemistry on axle efficiency and durability performance. Additionally detailed results and analyses of the full-scale axle testing results will be presented.
Authors
- Takashi Hoshino - Isuzu Motors Ltd.
- Farrukh Qureshi - The Lubrizol Corporation
- Nicholas Virostko - The Lubrizol Corporation
- Elizabeth Schiferl - The Lubrizol Corporation
- Ananda Gajanayake - Lubrizol Japan Ltd.
- Motoji Hiroki - Lubrizol Japan Ltd.
- Tomoya Higuchi - Lubrizol Japan Ltd.
- Keita Ishizaki - Lubrizol Japan Ltd.
Topic
Citation
Hoshino, T., Qureshi, F., Virostko, N., Schiferl, E. et al., "A Study of Axle Fluid Viscosity and Friction Impact on Axle Efficiency," SAE Technical Paper 2016-01-0899, 2016, https://doi.org/10.4271/2016-01-0899.Also In
References
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- Smeeth , M. , Spikes , H. , Gunsel , S. Boundary Film Formation by Viscosity Index Improvers Tribology Transactions 39 3 726 734 1996
- Barton , W. , Payne , J. , Baker , M. , O'Connor , B. et al. Impact of Viscosity Modifiers on Gear Oil Efficiency and Durability SAE Int. J. Fuels Lubr. 5 1 470 479 2012 10.4271/2011-01-2128
- Barton , W. , Knapton , D. , Baker , M. , Rose , A. et al. Impact of Viscosity Modifiers on Gear Oil Efficiency and Durability: Part II SAE Int. J. Fuels Lubr. 6 2 295 310 2013 10.4271/2013-01-0299