Hybrid vehicles fuel economy

Summary ol Hybrid Vehicle Fuel Economy Results on the FUDS and Highway Driving Cycles using Various Engines and a Fuel Cell (1) mpg diesel fuel for diesel engine and mpg gasoline equivalent for fuel cell powered vehicles... 

Fontaras G, Pistikopoulos P, Samaras Z (2008) Experimental evaluation of hybrid vehicle fuel economy and pollutant emissions over real-world simulation driving cycles. Atmos Environ 42 4023 035... 

Figure 2 summarizes the key results of the response time study. It provides the vehicle fuel economy (squares) and the fuel cell specific power (triangles) data for three vehicle designs, an ICE conventional vehicle, a neat (no energy storage) fuel cell vehicle, and a fuel cell hybrid vehicle. The key conclusion to be drawn from these results is that the... 

The fuel economy of series and parallel hybrid vehicles are compared in Table 3 for both the com-... 

Comparisons of the Fuel Economy for Series and Parallel Hybrid Vehicles (1) Fuel economy shown lor diesel engines is gasoline equivalent... 

Hydrogen has the potential to play a major role in energy independence but policies are needed that mobilize our present technologies. This means raising fuel economy standards, increasing hybrid vehicle use and developing options such as cellulose ethanol. 

Because of this inaction, as of 2002 the fuel economy of the average vehicle on American roads was at its lowest level in two decades and likely to get worse.43 The fuel economy laws have a loophole allowing suvs and light trucks to average 20.7 mpg, 25 percent lower than the standard for new cars. This has allowed overall vehicle efficiency to drop as the suv share of new vehicle sales has grown. Ford, for instance, has backed off a voluntary commitment to increase suv fuel efficiency, and, in fact, its 2003 model year suvs will be less fuel efficient than those of the previous year.44 Moreover, companies known for fuel efficiency, such as Honda and Toyota, both of which have introduced hybrid vehicles into the U.S. market, have also introduced gas-guzzling suvs. 

FIGURE 6-2 Postulated fuel economy based on the optimistic vision of the committee for conventional, hybrid, and hydrogen vehicles (passenger cars and light-duty trucks), 2000-2050. 

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