regenerative braking systems and their functions€¦ · ppt file · web viewregenerative braking...
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Regenerative Braking Systems and their functionsDylan Beam, Alexander Deutsch, Nick Kopycinski
http://www2.mazda.com/en/technology/env/i-eloop/
Why Use Regenerative Braking?
Energy Crisis
62.5% of energy is wasted through frequent braking in town driving2
23% improvement in fuel consumption2
Smaller Accessories1
Emissions reduction
www.conceptmotorsltd.com
1 Clegg, S.J. (1996) A Review of Regenerative Braking Systems. Working Paper. Institute of Transport Studies, University of Leeds, Leeds, UK.
2 Xu, Guoqing, Weimin Li, Kun Xu, and Zhibin Song. "An Intelligent Regenerative Braking Strategy For Electric Vehicles." <i>Energies</i> 4.9 (2011): 1461-477. Web.
History1930s- Rail systems4
1950s- Buses4
1967- Concept car introduction3
1997- Prius released5
2000- Prius mass produced5
3. Voelcker, John. "Electric-Car Trivia: When Was Regenerative Braking First Used?" Green Car Reports . High Gear Media, 10 Jan. 2014. Web. 19 Oct. 2015.4. Donev, Jason. "Regenerative Braking." Energy Education. University of Calgary, n.d. Web. 19 Oct. 2015.5. Bowling, Clarke. "Toyota Prius Turns 16: How the Hot Hybrid Has Changed over the Years." NY Daily News. New York Daily News, 28 June 2013. Web. 19 Oct. 2015.
http://www.greencarreports.com/news/1089510_electric-car-trivia-when-was-regenerative-braking-first-used
How Does Regenerative Braking Work?
Regular brakes waste large amounts of useable energy6
Regenerative Braking systems use the engine to harness this energy6
When slowing down, the engine switches to reverse mode7
The kinetic energy from the engine is transferred to the battery7
6 Ahn, J. K., K. H. Jung, D. H. Kim, H. B. Jin, H. S. Kim, and S. H. Hwang. "ANALYSIS OF A REGENERATIVE BRAKING SYSTEM FOR HYBRID ELECTRIC VEHICLES USING AN ELECTRO-MECHANICAL BRAKE." International Journal of Automotive Technology 10.2 (2008): 229-34. Web. 28 Sept. 2015.
7 Kepner, R., "Hydraulic Power Assist − A Demonstration of Hydraulic Hybrid Vehicle Regenerative Braking in a Road Vehicle Application," SAE Technical Paper 2002-01-3128, 2002, doi:10.4271/2002-01- 3128.
http://carmaintenence.blogspot.com/2011/04/toyota-camry-hybrid.html
World-Wide Impact 20% of world's energy use from transportation8
40% of that energy from urban transit8
Can increase the range of a car by over 10%9
Rising cost of fuel, carbon emissions and desire for extended driving range is leading to a rise in this technology
8 "Print Features." Global Mass Transit: Regenerative Braking: Gaining Acceleration. Global Mass Transit, 1 Nov. 2014. Web. 19 Oct. 2015.
9 Lv, Chen, Junzhi Zhang, Yutong Li, and Ye Yuan. “Mechanism analysis and evaluation methodology of regenerative braking contribution to energy efficiency improvement of electrified vehicles.” Energy Conversion and Management 92 (2015) : 469-482. ScienceDirect. Web. 30 Sept. 2015.
ExamplesTesla
Ford
Toyota
Nissan
Honda
Mazda
BMW
Hyundai
Fiat
Chevy
...
http://blog.caranddriver.com/2013-ford-fusion-energi-plug-in-hybrid-epa-certified-earns-100-mpge-combined-rating/
http://www.caranddriver.com/tesla/model-s
http://www.caranddriver.com/reviews/2013-fiat-500e-ev-first-drive-review
http://www.caranddriver.com/features/2016-chevrolet-volt-dissected-everything-you-need-to-know-feature