What is the function of variable gear ratio steering?
2 Answers
Variable gear ratio steering function: 1. Brief description: Variable steering ratio adjusts the steering gear transmission ratio according to the vehicle speed and steering angle. When the vehicle is in a parked state, moving at low speed, or making large steering angles, it provides a small steering gear transmission ratio; while at high speeds or when making small steering angles, it provides a large steering gear transmission ratio, thereby improving the stability of vehicle steering. 2. Principle: Variable gear ratio steering systems are not all at the same technical level. Currently, there are mainly two methods to achieve this function. One method relies on special racks, which is simple in principle and relatively low in cost, without requiring high technical sophistication. The other method is more complex, achieved through planetary gear structures and electronic systems.
I've driven many cars and found that the greatest benefit of variable gear ratio steering is making driving smoother and more effortless. In city traffic or when parking, just a light turn of the steering wheel allows the car to change direction quickly, making it very agile—like reversing into tight parking spaces without any struggle, unlike older cars that require heavy steering input. On highways, the steering becomes firmer, providing much better stability during turns without any wandering, making lane changes at high speeds more reassuring. This design adjusts steering sensitivity based on vehicle speed: low-speed driving features a lower gear ratio for more responsive steering, while high-speed driving adopts a higher gear ratio for steadier control, helping prevent driver fatigue, especially on long journeys. Having used cars equipped with this system, I noticed an overall improvement in handling—easy for both beginners and experienced drivers—while also reducing the risk of accidental skidding. In short, it enhances convenience and safety across various driving conditions, making it a feature I highly recommend.
