Timing Belt
A timing belt, timing chain or cambelt is a part of an internal combustion engine that synchronizes the rotation of the crankshaft and the camshaft(s) so that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes.
features of timing belt:
low noise operation
No need of lubricant
Prevent skidding
Conservation of fuel and good economy
Super-high mechanical efficiency