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Hybrid Benefits. . 1. When stopping the vehicle, Allison Electric Drive automatically becomes an energy generator by converting vehicle energy into electrical energy.. 2. The electrical energy is then saved, by storing it in the Allison Energy Storage System for future use.. 3. When accelerating the vehicle, the stored electrical energy is used to accelerate the vehicle, saving fuel and reducing harmful emissions and noise, while improving comfort..
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2. Hybrid Benefits
3. Energy recovery through regenerative braking is key to hybrid technology Regenerative Braking
5. Hybrid BenefitsImproved Fuel Economy
6. Hybrid BenefitsReduced Emissions
7. Hybrid BenefitsReduced Brake Wear
8. Hybrid Buses will yield other Fleet Cost Saving
10. Hybrid Buses will Increase your Ridership
11. Hybrid Buses will yield other Fleet Cost Saving
13. Series Hybrid Architecture
15. Parallel System Propulsion
16. Engine operates independently (Series)
CVT operation
Electric dominated launch
Mechanical path to final drive (Parallel)
Lower costs
Smaller overall package volume/mass
Higher transmission efficiency
An EV Drive-based hybrid system contains aspects of both Series and Parallel HEV powertrains
HEV operating capability (both)
Regenerative braking
Strong acceleration assist
Instant transient response
Allison Parallel Hybrid
18. Traditional package
Looks like a familiar B 400R
Therefore not intimidating to technicians
Concentric electric motors provide electrically variable drive ratios
.40 overdrive
“Two-mode compound split parallel hybrid architecture” for
19. A Continuously Variable Transmission (CVT) except it is done electrically (it is an EVT or Electrically Variable Transmission)
Referred to as a “Vehicle Designer’s Dream” since it is infinitely variable with respect to output speed and torque
Cool running since no torque converter or output retarder as heat generators. Only cool running AC Induction Motors for
20. Input rating (continuous):330 hp (246 kW)
Rated input torque: 1050 lb-ft (1424 Nm)
Rated input speed: 2300 rpm
Mass: 919 lb (417 kg) for
21. Target life is 6 years on a 12 year 40’ transit bus
At 6 years, maintenance should be done on Allison Energy Storage System
Customer can remove entire ESS and send to Allison Authorized Service Outlet
Allison Authorized Service Outlet will:
Replace battery cells
Salvage and reuse
ESS Enclosure
ESS Electronics
6 Variable-speed Brushless Fans
Customer can reinstall the ESS and run bus for its remaining 6 years of useful life Allison Energy Storage System
22. No “end-of-life” battery failures to date in customer vehicles or Allison test vehicles !
Some have reached 3-4 years of operation
Still targeting 6-years life
Allison ESS continues be an excellent energy storage system for transit duty Allison Energy Storage System
23. System Controllers Allison Transmission 1000/2000/2400 Series™ controller
As used in 2005 Silverado HD pickup truck
Very high quality
Automotive volumes
Two used with
Mass: 6.7 lb (3.1 kg) total weight for 2 controllers
24. Dual Power Inverter Module (DPIM) Specifically designed by Allison to meet customer needs
Core Allison business
One DPIM includes two inverters
600 Volts nominal DC
150 kW continuous 3-phase AC output
Simply cooled by EVDriveTM cooling circuit
Mass: 165 lb (75kg)
SAE J1939 Control Communications
25. Driver’s Selector Same as World Transmission
3000 Series, 4000 Series, B 300, B 400 or B 500
Driver instructions same as 3000 Series, 4000 Seriesand B Series
Diagnostic code accessible for technician through selector
26. Hybrid Engines
Allison is engine neutral
Smaller than normal
Popular engine optimized for Allison Electric Drive
Low noise and emissions
Rated power: 40 foot: 245-270 hp
60 foot: 330 hp
New Flyer
40 foot: ISL-280 hp
60 foot Artic: Caterpillar C9-330 hp
Gillig
35 & 40 foot SF & LF: ISB02-210/260 dual hp
27. Hybrid EnginesEngine Longevity Engine will have an easy life with our hybrid
Much less fuel consumed and lower horsepower demand = longer engine life (ask any engine expert)
Longer oil change intervals:
King County hybrid articulated bus didn’t change engine oil at 6K or 12K or 18K but did at 24K even though it didn’t need to be changed!
28. Product Support
29. OEM Releases – North America
30. Warranty Coverage