Kjøretøysrammen

Kjøretøysrammen, sometimes referred to as the chassis, forms the fundamental structural component of most motor vehicles. It is the backbone that supports all other parts of the vehicle, including the engine, drivetrain, suspension, body, and passenger cabin. The primary function of the frame is to provide rigidity and strength, allowing it to withstand the stresses and strains of driving, braking, and cornering, as well as the weight of the vehicle and its occupants.

Historically, body-on-frame construction was the dominant method, where the vehicle's body was mounted onto a separate, robust ladder-like frame. This design is still common in trucks and some SUVs due to its durability and suitability for heavy loads and off-road use. Modern passenger cars, however, predominantly utilize unibody (or monocoque) construction. In a unibody design, the body and frame are integrated into a single, cohesive structure. This approach typically results in a lighter vehicle, which can improve fuel efficiency and handling characteristics.

The materials used in frame construction vary. Steel is a common and cost-effective choice, offering good strength. More advanced frames may incorporate aluminum or composite materials to reduce weight while maintaining or increasing strength, contributing to better performance and efficiency. The design and engineering of the kjøretøysrammen are critical to a vehicle's safety, handling, and overall performance.