MECHANISM OF MOTOR TRUCK POWER TRANSMISSION LOSSES AND IMPLICATIONS FOR LUBRICANT FORMULATION AND SELECTION
The purpose of this project was to study the mechanism of power transmission losses in heavy truck forest operations and to understand the potential for minimiizng these losses by gear lubricant optimization. In order to study gear losses, a Class 8 tandem axle truck was obtained and instrumented for on-board data acquisition. Tuck testing was conducted on a test track, on public highways, and under the controlled climatic conditions of an All-Weather Chassis Dynamometer (AWCD). Lubricant optimization was conducted by using a variety of baloratory methods including a twin disk machine and a variable temperature axle efficiency rig. AWCD truck testing showed that passive energy losses in the drive train were very significant, particularly at lower loads and speeds. Overall efficiencies were 3- 12% lower at very low ambient temperatures associated with stabilized gear oil temperatures of 40C or less. It is concluded that improvements in heavy truck fuel economy of 1-2% are possible by using optimized gear lubricants. Greater savings may be possible for certain low speed, low load operations which involve frequent stops and very low ambient temperatures. (A)
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Corporate Authors:
Transportation Development Centre, 800 Rene-Levesque Boulevard West, Suite 600
Montreal, Quebec Canada H3B 2X1 -
Authors:
- MAY, C J
- MICHAELSEN, J
- Publication Date: 1994-2
Language
- English
Media Info
- Pagination: 185 p.
Subject/Index Terms
- TRT Terms: Energy; Energy conservation; Loss and damage; Lubrication; Motors; Transmissions; Trucks
- ITRD Terms: 213: Energy; 212: Energy conservation; 1236: Lorry; 9040: Loss; 3839: Lubrication; 1334: Motor; 1333: Transmission (veh)
- Subject Areas: Energy; Environment; Motor Carriers;
Filing Info
- Accession Number: 00680154
- Record Type: Publication
- Source Agency: Transportation Association of Canada (TAC)
- Files: ITRD, ATRI
- Created Date: Jun 27 1995 12:00AM