puoliakseleista

Puoliakselit, also known as half-shafts or drive shafts, are a crucial component in vehicles equipped with independent suspension or rear-wheel drive. They are essentially short, solid shafts that transmit rotational power from the differential to the wheels. In rear-wheel drive vehicles, the differential is typically located on the rear axle, and the half-shafts connect it to the rear wheels. For front-wheel drive vehicles, the half-shafts connect the transaxle (which combines the transmission and differential) to the front wheels.

The design of a half-shaft allows for the transmission of torque while accommodating the vertical movement of the wheels due to suspension travel and steering angles. This is achieved through the use of universal joints (U-joints) or constant velocity (CV) joints at each end of the shaft. CV joints are more common in modern front-wheel drive vehicles as they can maintain a constant rotational speed even when angled, which is essential for steering. U-joints, while simpler, can cause slight speed fluctuations.

The function of puoliakselit is vital for a vehicle's drivability. They enable the wheels to be driven independently, allowing for smoother acceleration and deceleration, as well as improved handling, especially during cornering. Damage to a half-shaft, such as a worn CV joint or a cracked boot (which protects the joint), can lead to clicking or knocking noises, vibrations, and ultimately a loss of drive to the affected wheel.