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Enhancement of Starter Brush Life for Micro Hybrid (Start/Stop) Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 09, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility
In Micro hybrid, start-stop system automatically stop and start the engine to reduce the idling time of engine spend in traffic jams and signals, thereby reducing fuel consumption and emissions.
Starter motors used in Micro hybrid (Start/Stop) application has 5~10 times more life cycles than compare to conventional starter because of need to starter in every idling time of engine. There are multiple components in starter motor have sliding contact (mechanical/electrical), rolling contact will inflict the life cycles of starter motor. Brush is one of the major sliding contact elements to inflict the life cycle of starter, brushes are commonly used to conduct current between the stationary and moving part of starter. Brushes are exposed both mechanical and electrical loading conditions. Brush wear is affected by the association of Mechanical wear and electrical wear. The mechanical wear inflicted by various factor including Material composition, material properties, Sliding speed, sliding distance, Contact force (Spring force) while the electrical wear inflicted by various factor including under/over commutation, Current density, contact resistance and also affected by environmental factors like humidity, temperature.
The main objective of this paper is to optimize the brush life of Metal (Copper) graphite brush for Micro hybrid (start/stop) applications starter motor by means of reducing brush wear through optimize the brush wear influential factors. Dynamically measure the brush wear rate in various conditions by sliding speed, contact force, current density. And also continuously measure the changes in brush length, temperature.
CitationGanesan, B., Neelakandan, V., Ganesan, T., and Chakrapani Rao, P., "Enhancement of Starter Brush Life for Micro Hybrid (Start/Stop) Applications," SAE Technical Paper 2018-28-0102, 2018, https://doi.org/10.4271/2018-28-0102.
Data Sets - Support Documents
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- He, D.H. and Manory, R., “A Novel Electrical Contact Material with Improved Self Lubrication for Railway Current Collectors,” Wear 249:626-636, 2001.
- He, D.H., Manory, R., and Grady, N., “Wear of Railway Contact Wires against Current Collector Materials,” Wear 215:146-155, 1998.
- Hamilton, R.J., “DC Motor Brush Life,” IEEE Trans Ind Appl 36:1682-1687, 2000.
- Moustafa, S.F., El-Badry, S.A., Sanad, A.M., and Kieback, B., “Friction and Wear of Copper-Graphite Composite Made with Cu-Coated and Uncoated Graphite Powders,” Wear 253:699-710, 2002.
- Zhongliang, H., Zhenhua, C., Jintong, X., and Guoyun, D., “Effect of PV Factor on the Wear of Carbon Brushes for Micromotors,” Wear 265:949-953, 2008.
- Yasar, I., Canakci, A., and Arslan, F., “The Effect of the Brush Spring Pressure on the Wear Behaviour of Copper-Graphite Brushes with Electrical Current,” Tribology International 40:1381-1386, 2007.
- Feng, Y., Zhang, M., and Xu, Y., “Effect of the Electric Current on the Friction and Wear Properties of the CNT-Ag-G Composites,” Carbon 43:2685-2692, 2005.
- El-Refaie, A.M.F., Abdel Aziz, M.M., Khorshid, S.A.Y., and Abu Elzahab, E.E.M., “Effect of Combined Velocity and Pressure on Life Time of Carbon Brushes,” IEEE Transactions on Energy Conversion 15(2):176-180, 2000.
- He, D.H. and Manory, R., “A Novel Electrical Contact Material with Improved Self-Lubrication for Railway Current Collectors,” Wear (249):626-636, 2001.
- Greenwood, J.A., “Constriction Resistance and the Area of Real Contact,” Br. J. Appl. Phys. 17:1621-1631, 1966.
- Bryant, M.D., Wang, J.P., and Lin, J.W., “Thermal Mounding in High Speed Dry Sliders: Experiment, Theory and Comparison,” Wear 181-183:668-677, 1994.