What do chassis do for your car?

I am trying to find any information on Automotive Chassis, like what they do, and why they are important, and maybe how to repair them.|||The term chassis means the frame plus the "running gear" like engine, transmission, driveshaft, differential, and suspension.





Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose - contributing to the car's handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and reasonably well isolated from road noise, bumps, and vibrations. These goals are generally at odds, so the tuning of suspensions involves finding the right compromise. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different.





In an automobile and other four-wheeled vehicles, a differential is a device, usually consisting of gears, for allowing each of the driving wheels to rotate at different speeds, while supplying equal torque to each of them.





A driveshaft, driving shaft, or Cardan shaft is a mechanical device for transferring power from the engine or motor to the point where useful work is applied.





Most engines or motors deliver power as torque through rotary motion: this is extracted from the linear motion of pistons in a reciprocating engine; water driving a water wheel; or forced gas or water in a turbine. From the point of delivery, the components of power transmission form the drive train.





Driveshafts are carriers of torque: they are subject to torsion and shear stress, which represents the difference between the input force and the load. They thus need to be strong enough to bear the stress, without imposing too great an additional inertia by virtue of the weight of the shaft.





n mechanics, a transmission (also called a "standard" or "manual" transmission) or gearbox, is the system of gears and/or the hydraulic system (called variously "hydrodynamic", "fluid" or "automatic" transmission) that transmits mechanical power from a prime mover鈥攕uch as an engine or electric motor鈥攖o some form of useful output device, normally rotary in form, and generally at a reduced rate of angular speed but at a higher motive torque.





Generally, transmissions will provide a significant speed-power conversion known as gear reduction (in speed) to a higher torque (rotational force or power). In motor vehicle transportation, a vehicle transmission may provide many different speed-power ratios known colloquially as "gears" or "speeds", and possibly several variant speeds in reverse direction as well鈥擳ractors and large trucks especially may have a dozen or more forward "gears" which vary from a crawling speed at high torque to high speed at low torque where the only torque needed with a load coasting along at a given speed are that small additional energy (force) needed to overcome ongoing friction and other road losses such as climbing a grade. When the torque needed to surmount a grade is insufficient at a higher rotational speed, the gearbox is shifted into a lower gear to provide more power, as was needed when initially accelerating said vehicle to the desired road speed. Gearing has much in common with the mechanics and mechanical factors present in pulley systems. One trades distance (numbers of rotations) for increased force.





An engine is something that produces an effect from a given input. The origin of engineering was the working of engines. There is an overlap in English between two meanings of the word "engineer": 'those who operate engines' and 'those who design and construct new items'.|||This is a strange question so expect some very unusual answers. The chassis the the structure and frame of the car. Everything on the car is supported by the chassis. The chassis will only need repair if it is damaged by an accident, rust, failure of some kind. You cannot repair a chassis without expensive hydraulic frame straightening equipment... Unless you are a welder and don't care about geometry.|||The chassis is just the body of the car. Used to be just the frame, until they found a way to combine the frame with the body into a single unit. The drive system and running gear are ATTACHED to the chassis, but they are not part of it. Same for seats, dash, and steering column. Attached, but not part of. The chassis is the frame without the doors, hood, or trunk lid. It can be repaired by any body shop.