Recently, a car owner told us that his car's steering wheel is gradually becoming heavier. What's the matter? So today we'll see what happens when the steering wheel is too heavy. Is there any way to turn it down?
Nowadays, the vast majority of vehicle models use hydraulic power steering system, which is divided into mechanical hydraulic steering and electronic hydraulic steering. The similar working principle is that the hydraulic pump (driven by the engine belt) provides oil pressure to push the piston, thus generating auxiliary power to push the steering rod and assist the wheel steering. The difference is that the driving mode of the oil pump is different. The mechanical hydraulic power pump is directly driven by the engine belt, while the electronic hydraulic power pump is driven by the electric power.
Because the mechanical hydraulic pump is directly driven by the engine belt, the steering wheel will be biased at low speed. At the same time, when driving, we should avoid killing the steering wheel for a long time, especially in turning and reversing. Killing the steering wheel for a long time will cause the oil pressure of the steering pump to be too low, which is easy to damage the booster pump, and then the steering wheel will be too heavy.
However, the most common reason for the weight of the steering wheel is the dirty power steering oil. The power steering oil, like other automotive oils, needs to be replaced. Another situation is that the tire pressure is too low, which will also cause the steering wheel to become heavier. In serious cases, the tire may even blow out due to insufficient tire pressure. Therefore, when the steering wheel becomes heavy, it is recommended to check the tire pressure and power steering oil.
If the above conditions are excluded, the steering system needs to be fully checked with the instrument. In fact, the steering system is more complex, and the electronic hydraulic power system also adds a lot of electronic sensors, which can change the oil pressure of the booster pump according to the speed of the vehicle, which is lighter at low speed and more stable.