A hybrid drive system combines two sources of power and energy management to optimize the combination of the two, given the limitations defined by the specifics of a given hybrid design or the purpose of a specific vehicle. In the case of this bus, Toyota has swapped out the ICE for the fuel cell. The hybrid components here provide similar energy management functions and assistance with the FC as they do with an ICE:

• Stop/start

• Regenerative braking to provide additional charge for the battery

• Acceleration assistance

You can argue that a proper FC design incorporates all the hybrid energy management functions—but the energy management functions still need to come from somplace. The fuel cell system certainly can use the extra assistance in certain situations (acceleration, for example). Toyota simply used what it had learned and had developed with hybrid systems to provide that in this case.

Just because the vehicle uses hydrogen doesn’t mean the fuel is free. :-) Efficiency and performance are still goals, and a hybrid configuration is one way to deliver.

Hybrid systems make the most sense—or contribute the most, depending upon the way you want to look at it—in a stop-and-start urban driving situation. They have their greatest difficulty in meeting their stated performance goals in high-speed highway driving. The duty cycle of an urban bus (with all its braking) make it an ideal candidate for regenerative braking, and hence for some form of hybrid design.

Dear Sirs;
Please, send me quotation for Toyota pickups and mini bus, 2005-2006 models,desels. If possible with sample pictures.
Thank you in advance.
Abdul Fattah.

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