Ohjausvoima

Ohjausvoima, also known as steering force or steering power, refers to the force exerted by a vehicle's steering system to turn the wheels. It is a critical component of a vehicle's handling and maneuverability. The primary source of ohjausvoima is the power steering system, which uses hydraulic or electric assistance to reduce the effort required to turn the steering wheel. This assistance is particularly important in larger vehicles or those with heavy loads, where the mechanical resistance to turning the wheels can be significant.

The amount of ohjausvoima required depends on several factors, including the vehicle's weight, the type of tires, and the road conditions. In sports cars and high-performance vehicles, ohjausvoima is often finely tuned to provide precise and responsive handling. In contrast, in commercial vehicles, the focus is on providing sufficient ohjausvoima to handle heavy loads and rough terrain.

The effectiveness of ohjausvoima is often measured in terms of the steering ratio, which is the ratio of the angle of the steering wheel to the angle of the wheels. A lower steering ratio provides more ohjausvoima but less precision, while a higher ratio provides less ohjausvoima but more precision. Modern vehicles often feature variable steering ratios, which can be adjusted to optimize ohjausvoima based on the driving conditions.

In summary, ohjausvoima is a crucial aspect of a vehicle's performance, affecting its handling, maneuverability, and overall driving experience. The power steering system plays a key role in providing the necessary ohjausvoima, making it an essential component in both passenger and commercial vehicles.