BMW X5/ E83 Electric Power Steering Rack Lenkgetriebe Without
|Type||Electric Power Steering Rack for BMW X5/ E83|
|Model||BMW X5/ E83|
|Reference NO.||32106771418 / 32136751027 / 32106763342 / 32136761823|
|Packing||BOX (Neutral Packaging or Customized Packaging)|
|Delivery Time||3 Days after payment received|
Generally, lighter, sportier cars have lower steering ratios than
larger cars and trucks. The lower ratio gives the steering a
quicker response -- you don't have to turn the steering wheel as
much to get the wheels to turn a given distance -- which is a
desirable trait in sports cars. These smaller cars are light enough
that even with the lower ratio, the effort required to turn the
steering wheel is not excessive.
Some cars have variable-ratio steering, which uses a
rack-and-pinion gearset that has a different tooth pitch (number of
teeth per inch) in the center than it has on the outside. This
makes the car respond quickly when starting a turn (the rack is
near the center), and also reduces effort near the wheel's turning
When the rack-and-pinion is in a power-steering system, the rack
has a slightly different design.
Part of the rack contains a cylinder with a piston in the middle.
The piston is connected to the rack. There are two fluid ports, one
on either side of the piston. Supplying higher-pressure fluid to
one side of the piston forces the piston to move, which in turn
moves the rack, providing the power assist.
We'll check out the components that provide the high-pressure
fluid, as well as decide which side of the rack to supply it to,
later in the article. First, let's take a look at another type of