Volvo, in addition to work on hybrid garbage trucks, is getting busy looking at other types of renewable energy sources for trucks. It recently demonstrated a group of trucks which the Swedish vehicle manufacturer says are carbon-dioxide free.
The seven trucks in question are equipped with Volvoâ€™s own 9-liter engines that have been modified to operate on seven different types of renewable liquid and gaseous fuels. These trucks can, according to Volvo, "be operated on a number of different renewable fuels and/or combinations of fuels: biodiesel, biogas combined with biodiesel, ethanol/methanol, DME, synthetic diesel and hydrogen gas combined with biogas."
All the fuels are produced from renewable raw materials, said Volvo, and thus produce no carbon-dioxide into the air. The company apparently conducted studies of the renewable fuels to determine those it thought most useful for carbon-dioxide-free transports. Factors considered included the environment, energy efficiency and the amounts of the different fuels that can potentially be produced.
The last factor in particular could prove to be a stumbling block at the moment. Volvo said that while it is ready with technology to go CO2 free, the "supply of different renewable fuels is significantly limited and there is no large-scale production or distribution for the majority of the alternatives that could be utilized in carbon-dioxide-free transports."
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