The role of the car steering knuckle arm:

1. The steering knuckle arm is used to change the direction of travel (steering) during the driving process of the car. Generally, when the vehicle is turning, the driver applies a steering torque to the steering wheel, and the torque passes through the steering shaft, transmission shaft, and steering. After being amplified by the steering gear, the torque is transmitted to the steering rocker arm, then transmitted to the steering knuckle and the steering knuckle arm on the steering knuckle through the steering straight rod, and finally transmitted to the wheel hub to deflect the wheel;

2. It can be seen from this that the structural requirements of the steering knuckle arm have the effect of connecting the straight tie rod and the wheel hub, and have the steering function. Because our country and most countries use right-hand driving, the driver's position is set in the vehicle's position. The left side, so the steering system is also installed on the left side of the vehicle;

3. The steering knuckle is the part that finally completes the steering, but how to connect the fan-shaped movement generated by the rocker arm of the steering machine to the left steering knuckle, so a steering knuckle arm is installed on the left steering knuckle, and it is connected through the steering longitudinal tie rod. Connect with the steering rocker and realize the steering function.