A car sensor is an intelligent device that monitors the condition of a vehicle and sends information to the user to know when changes shou ld be made. In some situation, it automatically makes changes to the engine. The device controls a different aspect of a vehicle, which in clude temperature, coolant system, oil pressure, emission levels, ...

In a piston engine, the main bearings are the bearings which hold the crankshaft in place and allow it to rotate within the engine block. Main bearings are usually plain bearings or journal bearings, held in place by the engine block and bearing caps. The number of main beari ngs per engine varies between engines, often in accordance with t ...