Diesel fuel is priced moderately higher than gasoline, but diesel has a higher energy density, i.e. more energy can be extracted from diesel as compared with the same volume of gasoline. Therefore, diesel engines in automobiles provide higher mileage, making it an obvious choice for heavy-duty transportation and equipment.
A petrol engine works on the basic principle of the Otto cycle . The spark plug of the engine takes electric current from the vehicle battery to generate a spark. This spark plug is usually located on the combustion chamber’s top for a quick ignition of the air-fuel mixture. The ignition process of the fuel produces heat, which is transformed The main propulsion of the U-boat is the diesel engine – of which there are two, one on each side (port and starboard). These engines consume outside air and were operable only on the surface. Later in the war, a special pipe (snorkel) was developed to draw outside air so that the diesel engines could operate while the submarine is just below For instance, diesel engines run on a repeating cycle of four stages. The first stage is intake. As the piston lowers, the air gets moved into the cylinder through the open-air inlet valve. The second stage is compression. When the inlet valve is closed, the piston rises and compresses the air mixture, heating it.How Do Diesel Engines Work? Diesel engines are internal combustion engines that utilize the heat generated from the compression of air to ignite the fuel. Unlike gasoline engines, diesel engines do not use spark plugs to ignite the fuel, but rather rely on the high compression ratio to produce the necessary heat.The heat of the compressed air ignites the fuel spontaneously. A diesel engine does not contain a spark plug. A gasoline engine compresses at a ratio of 8:1 to 12:1, while a diesel engine compresses at a ratio of 14:1 to as high as 25:1. The higher compression ratio of the diesel engine leads to better efficiency. cQxz4i. 304 213 432 443 439 308 68 270 169