612600020036 Crankshaft Gear Sinotruk Shacman Truck Spare Parts

The timing system drives the camshaft gears via a chain or belt, ensuring that the pistons (controlled by the crankshaft) and valves (controlled by the camshaft) move strictly according to the designed timing sequence. This is the "life rhythm" for the engine's normal operation.

The accessory system drives the engine accessories. In most designs, it also directly or indirectly drives critical accessories such as the oil pump, high-pressure oil pump (diesel engines), and balance shaft, providing power for engine lubrication, fuel supply, and balancing.

The core power transmission system precisely and synchronously distributes the power and torque from the crankshaft rotation to all the above systems.