Nissan Micra Diesel Engine PARTS

Car engines are built around the cylinders, which are sealed metal tubes with a spark plug and two valves on one side, and a crankshaft on the other. Inside the cylinders are pistons. Pistons are tight fitting pumps like plungers. These are attached to the crankshaft and slide up and down retracting energy from the explosion. The inlet valve and outlet valve, let air and gas in and release exhaust, respectively. When the spark plug ignites the gas, the pistons move and turn the crankshaft. Finally, the turning movement from the crankshaft transfers to the gearbox and moves the vehicle forward.