Parts of a Car Cont. Engine Subsystems
Most engine subsystems can be implemented using different technologies that can improve the performance of the engine. Here is a look at all the different subsystems used in modern engines that began with the valve train. Valve Train This consists of the valves and a mechanism that will open and close them which is called a camshaft. Camshaft The camshaft has lobes on it that moves the valves up and down. Most modern engines have what is called overhead cams which means the camshaft is located above the valves. The cams on the shaft activate the valves either through a noticeably short linkage or directly. older engines used a camshaft located in the sump near the crankshaft. Rods were also linked the cam below to lift valve filters above valves. This however has more moving parts and causes a kind of lag between the cam’s activation of the valve and the valves movement. Timing Belt A timing belt or timing chain links the camshaft to the crankshaft, so the valves and pistons are i