Evaluating Automobile Fuel Essay

The alternatives to liquid fuels are compressed gases and electric top executive, however, both are viewed as inferior by the self-propelled industry. The gases are inferior in harm of aught content per unit volume. Electric power may be stored on board a vehicle in a bombardment or (for a short time) in capacitors. However, batteries are regarded within the automotive industry as substandard compared to liquid fuels in terms of energy stored by unit weight and volume.Furthermore their cost is high, and the manufacture of slightly battery types involves large quantities of scarce or environmentally-threatening materials including cadmium, lead, lithium, nickel, sodium, sulphur and zinc. According to the already mentioned safe-auto report entitled The future of alley vehicle fuels forecasts to 2020 (January 2008), the International zipper Agencys World Energy Outlook 2007 found that close to 230m barrels of oil equivalent are required to meet global demand each day.Of this total, liquids account for the largest share of the 230m barrels (37%) followed by sear (23%) and natural gas (21%), leaving a 19% contribution from thermonuclear and sustainable sources. Of the liquids, however, transport use accounts for more than half (51%), with the remainder pass to industry (32%), residential and commercial (11%) and power generation (6%).The residential and commercial share is mainly accounted for by oil-fired central heating, and the small power generation share by gas turbines running to meet tiptop loads. It follows that the transport orbit share of the world energy market is just over half of 37%, in other words just about 19% or just under one-fifth of the total. It should also be borne in mind that the transport sector is itself divided into light-duty vehicles (privately-owned passenger vehicles and light commercial vehicles), heavy-duty vehicles, and other transport applications (aircraft, ships and diesel railroad track engines).The light-du ty and heavy-duty sub-sectors take about 40% each, and the other applications some(prenominal) 20%. The search for improved efficiency in the transport sector must therefore embrace both light-duty and heavy-duty road vehicles.