The Georgetown University Generation II Bus Program comprises two fuel cell buses. Both are 40-foot heavy duty transit buses, based on the RTS wide front door platform by Nova BUS. The propulsion system on each bus is hybrid electric - a battery pack in combination with a 100 kW fuel cell (a phosphoric acid fuel cell in the UTC Bus and a proton exchange membrane fuel cell in the Ballard X1 Bus).

UTC Bus Phosphoric Acid Fuel Cell 1998

Ballard X1 Bus Proton Exchange Membrane Fuel Cell 2001

The Generation II buses represent a significant leap ahead of the Generation I buses for a number of reasons:

• Improved Fuel Cell Specific Power - The fuel cells in the Generation II buses produce twice the power of the Generation I systems (100 kW versus 50 kW), but the power plants weigh approximately the same (~4000 pounds).



• More Responsive Fuel Cells - The fuel cells in the Generation II buses can respond to the driver's power demand about 100 times faster (~20 kW/sec) than the Generation I buses.



• Improved Life Expectancy - It is anticipated that the newer fuel cells will have a life expectancy of 25,000 hours (about five years of transit bus operation). This must be proven by testing.

---

For further details on the Generation II buses, please visit the General Information pages for the UTC Bus and the Ballard X1 Bus.

For technical details, please visit the Technical Information pages for the UTC Bus and the Ballard X1 Bus.

Or visit the Generation II Bus photo galleries of the UTC Bus and the Ballard X1 Bus.

Downloadable 2-page brochures are available for the two Generation II Fuel Cell Buses:

	UTC Bus Brochure (1.7 MB)		Ballard X1 Bus Brochure (1.6 MB)

Georgetown University
Advanced Vehicle Development

[ Home ]       [ Overview ]       [ History ]

---

[ Generation I ]     [ Generation II ]     [ Generation III ]

---

[ Partners ]      [ Links ]      [ Executives ]       [ Contact ]



© Georgetown University