bce7ed834d6e10c50412351265db6148.ppt
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Vehicles and Fuels Low Emissions Choices For Fleets UC, CSU, CCC Sustainability Conference August 1, 2008 Steve Hahn Materials Manager Santa Barbara Metropolitan Transit District
GM Allison Hybrid EPSystem. TM
Accumulative Hybrid Deliveries 2007
GM-Allison Hybrid delivery distribution in North American transit buses Hamilton ON (12) St Catharine ON (7) Ann Arbor MI (15) Ithaca (6) Saskatoon (4) Grand Rapids (5) Albany (11) Victoria (6) Vancouver (2)Edmonton (2) Madison WI (5) Philadelphia (32) Syracuse (9) Duluth (2) Cleveland (9) Buffalo (44) Pittsfield MA (1) Seattle (237) Minneapolis (22) Lansing (10) Lebanon PA (1) Pittsburgh (6) Spokane (3) Chicago (10) Brighton (2) Portland (2) Springfield (1) Eugene (11) Grand Rapids Hartford (2) Las Vegas (42) (2) Lafayette (4) Newark (4 coach) Eureka (2) Indianapolis (2) Salt Lake (3)Avon (1) Denver (4) Wilmington (2) Modesto (1) Baltimore (10) Livermore (1) Rockville (14) Bloomington (2) Stockton (32) Hampton Roads VA (10) Vail (1) Aspen (11) Evansville (5) Yosemite (18) Washington D. C. (50) Reno (2) Franklin TN (1) Humboldt (3) Lynchburg VA (2) Tulsa (1) Santa Barbara (8) Charlotte (2) Albuquerque (58) Austin (3) Norwalk (2) Chapel Hill (3) Flagstaff AZ (2) Orange County (2) ECU NC (1) Shreveport (1) Louisville (9) Covington KY (4) Tampa (4) Memphis TN (4) Houston (44) Sarasota (10) Ft. Lauderdale (5) Honolulu (50) San Juan (14) EESB January 2008 cgc 021808
64 Million Service Miles accumulated as of December 2007
Hybrid Benefits Noise Testing Aspen Colorado Whispr Mode was as quiet as passenger cars in Aspen
“A” Motor/ Generator DPIM Two-Mode Compound Split Parallel Hybrid Architecture “B” Motor/ Generator Energy Storage Nearly 100% Efficient Mechanical Path Over 90% Efficiency 70% of the time
EP Motor Architecture • Dual AC Induction Motors • Planetary Gearsets
Series Hybrid Vs Parallel Losses Series Hybrid Allison Parallel Hybrid has less Energy Losses = Less Emissions, Fuel and Noise
System Controllers • Allison Transmission 1000/2400 Series™ controller – As used in 2008 Silverado – Mass: 6. 7 lb (3. 1 kg) total weight for 2 controllers
Allison Matsushita/Panasonic Ni. MH Energy Storage System
Dual Power Inverter Module (DPIM) • One DPIM includes two inverters • 600 Volts nominal DC • Mass: 165 lb (75 kg)
Dual Power Inverter Module (DPIM) • 160 k. W continuous 3 phase AC output • Simply cooled by EVDrive. TM cooling circuit • SAE J 1939 Control Communications
MTD Hybrid Statistics • 250, 000 miles recorded (8 buses are in service) • 14 -16 hour runs per day • 90% availability • 22% FE improvement • Exhaust temperatures averaging 400 C for regeneration of DPF’s • Exhaust backpressures averaging below 2” • 10000 mile between propulsion system road calls • Rear Brake change interval every 100, 000 miles • Front Brake change interval every 200, 000 miles
Fuel Economy Improvement
Hybrid Benefits Improved Fuel Economy CBD-14 Fuel Economy
Hybrid Benefits Reduced Emissions
Urban Bus Emissions (on CBD-14) CNG Diesel
Thank you! Steve Hahn Materials Manager Santa Barbara MTD shahn@sbmtd. gov


