|
Hummer is one of the cars which have most complicated machines in it. The engine transfers the power to the wheels to make the car move. But this transfer of power, together with the need to make driving easy, safe, and comfort-able, involves many highly complex systems. In fact, your Hummer car is not a single machine at all, but a whole collection of systems and components working in concert. Each component is contributing its important function to make the car perform well. When it comes to the steering system, it is of mainly two types. One is manual and the other is the power steering. The power steering systems use hydraulic components to assist the steering effort of the driver. The purpose of the steering wheel and the steering shaft is to produce the necessary force to turn the steering gear. The rack-and-pinion system has worked so well that it is currently being used in most of the modern cars. The steering wheel and steering shaft are connected to a pinion gear. The pinion gear is in mesh with a straight bar that has gear teeth cut into one side. The toothed bar is called a rack. When the driver turns the steering wheel, the pinion gear moves the rack. This movement in turn, is connected to a linkage that moves the front wheels. The rack-and-pinion gear is mounted in a rack housing assembly. The steering linkage consists of two inner tie rods and two tie rod ends. The inner tie rod ends are attached to the steering rack ends. The outer tie rod ends are attached to the suspension arms on the steering knuckles.
|
