Vääntösauvoihin

Vääntösauvoihin, known in English as torsion bars, are a type of spring used in vehicle suspension systems. They function by twisting along their longitudinal axis to absorb and release energy. One end of the torsion bar is typically fixed to the vehicle's chassis, while the other end is connected to a suspension component, such as a control arm. When a wheel encounters a bump or dips into a depression, the control arm moves, causing the torsion bar to twist. This twisting action stores the energy, and as the suspension returns to its normal position, the bar untwists, releasing the stored energy.

Torsion bars offer several advantages in suspension design. They can provide a low profile, which is beneficial for packaging, especially in trucks and off-road vehicles where ground clearance is important. They are also generally durable and require minimal maintenance. The spring rate of a torsion bar can be adjusted by changing its diameter or material properties, allowing for fine-tuning of the suspension's stiffness. Historically, torsion bars have been used in a wide range of vehicles, from early automobiles to military vehicles and some modern passenger cars, particularly those with a focus on robust suspension.