Väntvõllide

Väntvõllide, commonly known as crankshafts, are essential components in internal combustion engines. Their primary function is to convert the linear reciprocating motion of the pistons into rotational motion. This rotational motion is then transmitted to the drivetrain, ultimately powering the vehicle. A crankshaft typically consists of several crankpins, which are offset journals to which the connecting rods are attached, and main journals, which are supported by the engine block bearings.

The design of a crankshaft is crucial for engine performance and longevity. The number of crankpins and their arrangement determine the engine's firing order and smoothness. For example, in-line engines and V-engines utilize different crankshaft configurations to achieve their respective characteristics. The material used for crankshafts, often forged steel, is selected for its strength and durability to withstand the immense forces generated during combustion.

Lubrication is vital for the proper functioning of a crankshaft. Oil passages within the crankshaft supply lubricant to the main bearings and crankpin bearings, reducing friction and wear. Any damage or wear to the crankshaft, such as bearing failures or cracks, can lead to significant engine problems and require costly repairs. Therefore, regular maintenance and inspection of the crankshaft are important for engine health.