1. The mechanical hydraulic power steering system
1, hydraulic power steering systems are generally mechanical valve controlled by the hydraulic pump, tubing, pressure flow, V-belts, storage tanks and other members constituting .
2, regardless of whether the car steering, the system should work, but also in the large shift to lower-speed, hydraulic pump output needs more power to get bigger boost. So, also a waste of resources to some extent. Can recall: On such a car, especially when turning at low speed, I felt the direction of relatively heavy, the engine is also more effortless. Also, because a lot of pressure of the hydraulic pump is relatively easy to damage the power system.
In addition, the mechanical hydraulic pump and the power steering cylinder components and piping, the pressure is maintained, irrespective whether the steering, the system always in operation, high energy consumption, the consumption of which is one reason for the resource is located.
Usually economical car using a mechanical hydraulic power system more.