In this study, load-independent (spin) power losses of a gearbox operating under dip-lubrication conditions are investigated experimentally using a final-drive helical gear pair from an automotive transmission as the example system. A dedicated gearbox is developed to operate a single gear or a gear pair under given speed and temperature conditions. A test matrix that consists of sets of tests with: (i) a single spur, helical gears, or disks with no teeth and (ii) helical gear pairs is executed at various temperatures, immersion depths, and pinion positions relative to its mating gear. Power losses from single gear and gear pair at identical operating conditions are compared to quantify the components of the total spin loss in the form of losses due to gear drag, gear mesh pocketing, and bearings and seals.
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Research-Article
An Experimental Investigation of Churning Power Losses of a Gearbox
J. Polly,
J. Polly
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
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D. Talbot,
D. Talbot
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: talbot.11@osu.edu
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: talbot.11@osu.edu
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A. Kahraman,
A. Kahraman
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
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A. Singh,
A. Singh
General Motors Powertrain,
Pontiac, MI 48390
Pontiac, MI 48390
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H. Xu
H. Xu
General Motors Powertrain,
Pontiac, MI 48390
Pontiac, MI 48390
Search for other works by this author on:
J. Polly
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
D. Talbot
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: talbot.11@osu.edu
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: talbot.11@osu.edu
A. Kahraman
Department of Mechanical
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
and Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
A. Singh
General Motors Powertrain,
Pontiac, MI 48390
Pontiac, MI 48390
H. Xu
General Motors Powertrain,
Pontiac, MI 48390
Pontiac, MI 48390
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received September 8, 2017; final manuscript received October 30, 2017; published online January 24, 2018. Assoc. Editor: Sinan Muftu.
J. Tribol. May 2018, 140(3): 031102 (8 pages)
Published Online: January 24, 2018
Article history
Received:
September 8, 2017
Revised:
October 30, 2017
Citation
Polly, J., Talbot, D., Kahraman, A., Singh, A., and Xu, H. (January 24, 2018). "An Experimental Investigation of Churning Power Losses of a Gearbox." ASME. J. Tribol. May 2018; 140(3): 031102. https://doi.org/10.1115/1.4038412
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