Effects of tire deflection on rear axle torque Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/2r36v3913

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  • This paper presents data obtained in the study of an 18-wheel western type log truck outfitted with CTI and carrying a highway load. Operating on grades of 20 and 25 percent, drive shaft torque was monitored to quantify stress levels on the drive train while varying tire deflection. This paper provides information on the limits of additional traction to be gained through the use of tire deflection when operating on steep terrain--without excessive tire slip or vehicle maintenance. Torque levels for each grade/deflection combination are presented. A combination of steep topography and escalating road construction costs have led to the use of shorter, steeper roads. To reach landings of harvesting operations with a minimum road length, spur roads are often constructed in the 20 to 25 percent slope range. Haul roads exist with grades. of 15 to 20 percent. An assist vehicle is often appraised for when grades exceed 16 percent. Utilizing the proper tire deflection for the application (based on speed and load) appears feasible through the use of central tire inflation (CTI) systems. Benefits have been seen in reduced vehicular damage to forest roads and increased tire life. An additional benefit realized with the use of CTI is improved traction on some road surface types; because of the increased tire tread length.
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  • description.provenance : Made available in DSpace on 2009-05-05T17:36:05Z (GMT). No. of bitstreams: 1 Simonson, Robert MF.pdf: 386549 bytes, checksum: 1a65f88688b704ad19dde69bb3033070 (MD5)
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2009-05-04T21:31:56Z No. of bitstreams: 1 Simonson, Robert MF.pdf: 386549 bytes, checksum: 1a65f88688b704ad19dde69bb3033070 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2009-05-05T17:36:05Z (GMT) No. of bitstreams: 1 Simonson, Robert MF.pdf: 386549 bytes, checksum: 1a65f88688b704ad19dde69bb3033070 (MD5)

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