Nylon H Type Industrial Timing Belt, For Machine Tools, Belt Width: 10 mm
Timing belt in the 4-cylinder DOHC engine |
The camshafts rotate at exactly 1/2 speed of the crankshaft; meaning two revolutions of the crankshaft are equal to one revolution of the camshaft.
In some engines a timing belt can also drive additional components such as a water pump, balance shaft, intermediate shaft, injection pump and an oil pump. A balance shaft, an intermediate shaft and an injection pump must also be synchronised with a crankshaft.