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Diesel,it has gone from dirty, smelly truck fuel to powering the winners of the prestigious Le Mans 24 Hours race for the past five years.On the road, diesel sales are rising and show no signs of slowing down. In Europe they have overtaken petrol models for some manufacturers and they could do the same here.Since 2005, overall sales of diesel-powered vehicles have almost doubled in Australia.Many are now as smooth and quiet as a petrol engine.They are now found in every sort of vehicle, too, from compact city cars all the way up to luxury limos such as the Jaguar XJ. They've also become sporty. Audi and Peugeot, which have used diesel-powered prototypes to win Le Mans, even offer their TT and RCZ sports cars with diesel engines.
The reason for the surge in diesel popularity is simple: better fuel economy at minimal expense. Typically, a diesel is 20 to 30 per cent more efficient than an equivalent petrol engine.Diesel engines, almost all of which are turbocharged in modern cars, also offer more torque (pulling power).Diesel engines emit more noxious gases and CO2 per litre of fuel used than petrol-powered cars. However, because diesels use less fuel, they can emit less CO2 over time. Diesel produces more CO2 emissions per litre of fuel burnt; about 17 per cent more than petrol. But because it uses less fuel, it actually produces less CO2 in total.Motoring organisations state that 70% of roadside breakdowns are caused by ignition faults.
Diesels don't have an ignition system....
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