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LPG LPG (or Liquified Petroleum Gas), when used as a vehicle fuel, is a mixture of propane (95%), butane and other light hydrocarbons derived from refining crude oil, which gives better performance than the EU mix of 60% propane and 40% butane. At ambient temperature LPG is a gas but it can either be cooled or subjected to pressure to accommodate its storage and transportation.

Emissions LPG has the potential to reduce harmful exhaust emissions from traffic. It is also a low carbon content fuel that can reduce the emission of carbon dioxide (main greenhouse gas).
Carbon Monoxide CO is a colourless, odourless and tasteless gas, which reduces the ability of blood to carry oxygen around the body. It can cause headaches, respiratory problems and, at high concentrations, even death. Atmospheric concentrations increased during the 20th century, although there are indications that recent reductions are due to the widespread use of catalytic converters in vehicles.
Hydrocarbons Hydrocarbons are a precursor to ground-level ozone, a serious air pollutant in cities across the world. A key component of smog, ground-level ozone is formed by reactions involving hydrocarbons and nitrogen oxides in the presence of sunlight. Hydrocarbon emissions result from incomplete combustion of fuel and from fuel evaporation. Modern cars are designed to minimise these through improvements to hardware and to combustion control.
Oxides of Nitrogen During combustion, nitrogen oxides form in high temperature, fuel-lean conditions, which are common in modern vehicle engines. In order to reduce NOx emissions, new exhaust treatments are being developed.
Carbon Dioxide Using LPG can potentially reduce harmful exhaust emissions from traffic. It is a low carbon-content fuel and so can be used to reduce the emission of carbon dioxide (CO2). This non-toxic gas is thought to have a large effect on global warming and on the greenhouse gas effect.
Particulate Matter Particulate Matter is a collective name for the solid (or liquid) particles found in exhaust gases. Some particles are large or dark enough to be seen as soot or smoke, whilst fine particulate matter is generally not visible to the naked eye. This is evident from the different size (and visibility) of particulate matter emitted from diesel and petrol-engined vehicles
Did you know...?
LPG stands for Liquefied Petroleum Gas LPG autogas in the UK is Propane. LPG is also available as Butane – for further information go to www.uklpg.org LPG autogas is by far the most widely available alternative fuel in the UK. There are over 1300 public access vehicle refuelling sites in the UK in addition to which many businesses have their own “bunkered” facilities. Research and testing conducted by Dutch research institute TNO concluded that the safety of modern autogas vehicles is in fact better than for petrol vehicles. Converting your car can increase the power and performance - click here for article from Practical Performance Car (Pdf file - 5mb) LPG autogas is well established worldwide as an environmentally friendly transport fuel in use in over 12 million vehicles.
There are over 7 million in Europe and in the UK the market has developed over the last 10 years to around 150,000 LPG vehicles on our roads. The UK market is predominantly cars and light commercial vehicles up to 3.5 tonnes. Most petrol driven vehicles can be converted to run on LPG. Around 60% of the world supply of LPG comes from the separation of natural gas products, and 40% is a by-product from the refining of crude oil. The UK produces around 5.8 million tonnes of which over 2.5 million tonnes is exported.
Increased use of LPG autogas will reduce our reliance on imported petrol and diesel. In addition to being an automotive fuel, LPG is widely used as an off mains gas fuel and is also available in bottles or cylinders. It is used in domestic, commercial and agricultural situations and for leisure heating and cooking - for further information go to www.uklpg.org
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