Diesel engines do not require spark ignition<\/strong>: The real difference between diesel and petrol engine is that diesel engines do not require ignition for combustion. In diesel, burning done by compressed air so that the air which is enough heat in the combustion chamber can be used to burn the fuel.<\/p>\n The shape of the combustion chamber diesel engines<\/strong>: Diesel engines and gasoline motor Having different combustion chamber shape. In a diesel engine in the space between the cylinder head and piston at top dead point when very small so as to produce a high pressure ratio.<\/p>\n The shape of the combustion chamber of motor gasoline<\/strong>: In the gasoline engine combustion chamber in the cylinder head. Space between the piston and the cylinder head is bigger than the diesel, so the compression ratio is small. Diesel engines are able to do heavier work: other main difference is that it can work on at low rpm. In general, diesel typically operates between 800 to 2000 rpm and has more torque and power to work.<\/p>\n Cycle of four steps<\/strong>: Both types of engines, changing thermal power into movement by using the four-step cycle.<\/p>\n Diesel engines more fuel efficient<\/strong>: At the time of operation, the diesel engines are generally more efficient in fuel consumption compared to the gasoline engine. Where with a little fuel, diesel engines can produce more power than gasoline motors. This happens because the diesel fuel has a higher heat content than the heat contained by gasoline.<\/div>\n