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An Experimental Investigation of Churning Power Losses of a Gearbox

Polly, Joseph H
http://rave.ohiolink.edu/etdc/view?acc_num=osu1362745236

Abstract Details

2013, Master of Science, Ohio State University, Mechanical Engineering.
In this study, load-independent (spin) power losses of a gearbox operating under dip-lubrication conditions are investigated experimentally. A family of final drive helical gear pairs from an automotive transmission is considered as the example for this investigation. A dedicated gearbox is designed and fabricated to operate a single gear or a gear pair under given speed conditions. The test gearbox is incorporated with a high-speed test bed with power loss measurement capability. A test matrix that consists of sets of tests with (i) single spur, helical gears, or disks with no teeth, and (ii) helical gear pairs of varying gear ratios is executed with three different transmission fluids at various temperatures and immersion depths. Power losses from single gear and gear pair tests at identical operating conditions are compared to break down the total spin loss to its main components, namely gear drag loss, gear mesh pocketing loss, and bearing/seal loss. In addition, the space around the gears within the gearbox will be altered to quantify any influences of enclosures and peripheral shrouds on the spin losses of a rotating gear.
Ahmet Kahraman, Dr. (Advisor)
Donald Houser, Dr. (Committee Member)
124 p.
Mechanical Engineering
gear; churning; spin power loss; lubrication; gearbox; housing; windage; efficiency; helical gears; spur gears

Recommended Citations

Citations

  • Polly, J. H. (2013). An Experimental Investigation of Churning Power Losses of a Gearbox [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1362745236

    APA Style (7th edition)

  • Polly, Joseph. An Experimental Investigation of Churning Power Losses of a Gearbox. 2013. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1362745236.

    MLA Style (8th edition)

  • Polly, Joseph. "An Experimental Investigation of Churning Power Losses of a Gearbox." Master's thesis, Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1362745236

    Chicago Manual of Style (17th edition)

osu1362745236
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© 2013, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.
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