Traditionally, diesel engines have always been seen as noisy, Smelly and underpowered engines of little use other than in trucks, taxis, and vans. But as diesel engines and their injection system controls have become more refined, The 1980s have seen that situation change. In the UK in 1985 there were almost 65,000 diesel cars sold (about 3.5 percent of the total number of cars sold), compared with only 5380 in 1980. The compression-ignition engine The main advantage of diesel engines over petrol engines is their lower running cost. This is partly a result of the greater efficiency of the. High compression ratio diesel engine and partly because of the Lower price of diesel fuel although the price difference varies, So … Continue reading How a diesel engine works