What happens inside the cylinder? Pytania. What is the cylinder jacket made of? The cylinder jacket is made of cast iron. What does the cylinder jacket contains? The cylinder jacket contains the liner which is made of special alloyed cast iron in one piece. What does the piston consist of? The piston consists of a piston head, a skirt and piston rod. How is the crosshead block connected to the connecting rod? The crosshead block is connected to the connecting rod by means of the crosshead pins. What is the connecting rot attached to? It is attached to the rotating crankshaft by means of crank pin and webs. What happens during the compression stroke? During the compression stroke the piston is at its lowest position. Then it moves upwards and compresses the air above it into a smaller and smaller volume. . What happens during the working stroke? During the working stroke the piston is at its highest position. The air in the cylinder is highly compressed and is also very hot, so hot, that it will ignite oil which is sprayed into it. Now the combustion takes place and the piston is forced down violently. . What happens during the exhaust stroke? During the exhaust stroke the piston is at its lowest position. Then it moves upwards and sweeps the products of combustion from the cylinder through an opened exhaust valve. . What happens during the inlet stroke? During the inlet stroke the piston is at its highest position. Then it moves upwards and refills the cylinder with the fresh air through