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Frame

The car frame, also known as the chassis, is the structural foundation of a vehicle, providing support for the engine, transmission, suspension, and other components. The frame is typically made of steel, although some modern vehicles use aluminum or other lightweight materials to reduce weight and improve fuel efficiency.


The frame consists of several components, including the main rails, cross members, and subframes. The main rails are the two long, parallel beams that run the length of the vehicle and support the weight of the car. Cross members are shorter beams that connect the main rails and provide additional support and rigidity. Subframes are smaller frames that support the engine, transmission, suspension, and other components.


The frame is designed to withstand the stresses and strains of driving, including the weight of the vehicle, the forces of acceleration and braking, and the impact of bumps and potholes. The frame also plays a critical role in protecting passengers in the event of a collision, absorbing and dissipating the energy of the impact.