What is a variable pitch rack and pinion system?
Some cars use variable ratio steering. This rack and pinion steering system uses a different number of teeth per cm (tooth pitch) in the centre than at the ends. The result is the steering is more sensitive when it is turned towards lock than when it is close to its central position, making the car more maneuverable.
What are the advantages of variable ratio steering?
The advantage of an electronically controlled variable gear ratio Steering Assembly is that it adjusts to the ideal steering condition for whatever the car’s speed happens to be.
What is a variable pitch steering rack?
A variable-pitch racked bar has a row of rack teeth with a middle fixed pitch region and two end fixed pitch regions. A variable-pitch region is interposed between the middle fixed pitch region and each of the end fixed pitch regions.
How does a variable ratio steering system work?
Variable-ratio steering Variable-ratio steering is a system that uses different ratios on the rack in a rack and pinion steering system. At the center of the rack, the space between the teeth are smaller and the space becomes larger as the pinion moves down the rack.
What does variable ratio rack and pinion mean?
A variable-ratio steering, is a system that uses different ratios on the rack, in a rack and pinion steering system. At the center of the rack, the space between the teeth is smaller and the space becomes larger as the pinion moves down the rack.
What are the functions of rack and pinion steering?
The rack and pinion gear set has two main functions: Conversion of the steering wheel’s rotational motion into the linear motion needed for the vehicle’s wheels to turn Moog Parts defines “steering ratio” as the ratio of how far the steering wheel turns to how much the wheels turn.
Why is the steering ratio lower in the middle of the rack?
In the middle of the rack there is a higher ratio and the ratio becomes lower as the steering wheel is turned towards lock. That makes the steering less sensitive when the steering wheel is close to its center position and makes it harder for the driver to over steer at high speeds.
Variable-ratio steering. Variable-ratio steering is a system that uses different ratios on the rack in a rack and pinion steering system. At the center of the rack, the space between the teeth are smaller and the space becomes larger as the pinion moves down the rack.
What does steering ratio mean in rack and pinion?
Variable-ratio steering is a system that uses different ratios on the rack in a rack and pinion steering system. At the center of the rack, the space between the teeth are smaller and the space becomes larger as the pinion moves down the rack.
How does the rack and pinion system work?
The pinion gear is attached to the steering shaft so that when the steering wheel is turned, the gear spins, moving the rack. The axial rod at each end of the rack connects to the tie rod end, which is attached to the spindle. Most cars need three to four complete turns of the steering wheel to go from lock to lock (from far right to far left).
Why is rack and pinion better for front wheel drive?
Rack and pinion systems are lighter because they don’t require the idler arms, Pitman arms, center links, and tie rod sleeves found in conventional steering systems. The size and weight of a rack and pinion system make it a better fit for front-wheel-drive applications because manufacturers can install it right next to the transverse drivetrain.