I don't know if you have noticed while driving that steering wheel of a car can return to its normal position after completing a turn? There are many older drivers who like to let go of steering wheel after a turn and then quickly pick up sensation after wheels return to their original position. So what is principle behind this? Today we'll just talk about it~
A very important reason is that tires will try to lean in direction of least resistance when vehicle is moving, and direction of least resistance will be when driving in a straight line. will automatically return to center to reduce resistance.
Another reason has to do with tuning of car's front suspension, which we often refer to as toe-in. Two parameters are very important: tilt of kingpin and caster of kingpin.
The role of king pin tilt is to raise front of wheel or front of car a certain distance when wheel is turned, so that gravity of wheel can force it back to its original position. original direction and position, that is, under influence of gravity, steering wheel is easier to reset. At same time, angle of kingpin can also reduce impact of wheels on suspension when changing direction, and angle should not be too large.
The role of kingpin angle is to keep car stable in a straight line and at same time encourage wheels to return to their original position after steering. The principle is that under kingpin angle, wheel's intersection point when it is in contact with ground is at front of tire, in order to generate a return force, direction of return force is directly opposite to direction of deflection of wheel, which is beneficial for car to drive straight and at same time favors right turn.
Actually, it's very cumbersome. Simply put, wheel alignment is related to these angles. If your car cannot be broken up in time, this is also an easy fix.
One of them is related to tires. First, check tire pressure, and then check degree of wear of left and right tires. Incorrect tire pressure will affect performance of front suspension, and uneven wear will also affect performance of front suspension.
The second one is directly related to parameters, solution is also very simple, it is enough to do wheel alignment right away.
Finally, how many people like feeling of releasing steering wheel with both hands after a turn and then quickly squeezing it back into straight?