Did you know that ..
Carbon dioxide is one of the main gases that traps the heat in the atmosphere causing an enhanced Greenhouse Effect possibly leading to Climate Change.
If we have to use a car, then we can help reduce pollution by driving cars powered by electricity or liquid petroleum gas (LPG).
How do vehicles use alternative fuels?
In hybrid vehicles, the battery is charged with electricity generated by a small on-board petrol or LPG engine. This normally runs at constant speed, giving the most economical use of fuel and the lowest level of pollution. In some designs of hybrid vehicle, power from the engine can be used directly to drive the wheels to assist rapid acceleration or climbing steep hills.
Research is being carried out into using fuel cells instead of engines to provide the electricity. These release even less pollution for a given journey. However, many fuel cells currently require special fuels, such as hydrogen gas. There is a lot of research underway to develop fuel cells that could run on petrol and possibly diesel.
LPG engines are less polluting than those powered by petrol. However, LPG is not yet available at all filling stations. Cars are being built that can use either petrol or LPG. The change-over can be at the flick of a switch or done automatically.
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