Wholesale Price Spare Parts OEM 4007. Vr 4007vr Auto Hydraulic Power Steering Pump for 104 106 205 206 208 304 305 306 307 308 405 406 407 408 504 505 604 5008

Automobile power steering system knowledge and fault diagnosisToday, Taizhou Dongna brings you some knowledge about the steering system, and I hope it will be helpful to you.1.The role of the steering systemThrough the driver's operation, change the driving direction of the car.2.Second, the composition of the steering systemThe steering system is mainly composed of three parts: the steering control mechanism, the steering gear and the steering transmission mechanism.Steering mechanism: The driver's force on the steering wheel is transmitted to the steering rack and power steering pump.Steering gear: properly transform the torque and steering angle from the steering wheel (mainly deceleration and torque increase), and then output it to the steering transmission mechanism to make the car turn. So the steering rack is essentially a reduction gear.Steering transmission mechanism: The force output by the steering gear and power steering pump is transmitted to the steering knuckles on both sides of the steering bridge to deflect the steering wheels.3.Classification of Steering SystemThe steering system configured on the car is divided into mechanical steering system and power steering system.The power steering system mainly includes the following three categories1)Mechanical hydraulic power steering system2)Electronic hydraulic power steering system3)Electric Power Steering System4.Steering control mechanismIt refers to some parts in front of the steering gear and power steering pump, which is composed of steering wheel, steering transmission shaft, steering column, steering cross and anti-injury steering mechanism.5. Steering gearAs mentioned above, the function of the steering gear and power steering pump is to transmit the force from the steering wheel to the steering drive mechanism after decelerating and increasing the torque, so as to achieve the purpose of steering.There are many types of steering gears, such as rack and pinion type, recirculating ball type, worm crank finger type, etc.1)rack and pinion steering gearThis type of steering gear is the simplest steering gear. Its advantages are simple and compact structure, high rigidity, low cost, sensitive steering, high positive and reverse attack rates, easy to arrange, and it is especially suitable for matching with candle suspension and MacPherson suspension, and can also be used directly Drive the tie rod to simplify the steering transmission mechanism. Therefore, it is widely used in cars, miniature and light trucks.2)recirculating ball steering gearThe thread between the steering shaft and the nut frame is replaced by many steel balls, and the steel balls roll in the spiral groove to change the sliding friction into rolling friction.When turning, turn the steering screw, and the force is transmitted to the nut frame through the steel ball, and the nut frame moves axially along the steering shaft. The nut frame then drives the sector gear to rotate, thereby driving the steering rod to move to achieve the purpose of steering.3)worm crank pin steering rackThe worm has a trapezoidal thread, and the finger-shaped tapered finger pin is supported on the crank with a bearing, and the crank is integrated with the steering rocker shaft. When turning, the worm is rotated by the steering wheel, and the tapered finger pin embedded in the spiral groove of the worm rotates on its own, while making a circular motion around the steering rocker shaft, thereby driving the crank and the steering drop arm to swing, and then through the steering transmission mechanism to make the steering wheel deflection. This kind of steering gear is usually used on trucks with high steering force.4)hydraulic integral power steeringIn addition to the electronic power assist, the current cars almost all use the integral power steering gear of the rotary valve type.The steering power cylinder piston is integrated with the mechanical steering gear, and the piston divides the steering power cylinder into left and right chambers. The steering control valve is installed at the lower end of the steering column, and the steering shaft rotates to control the working state of the steering control valve. The steering control valve is a slide valve or a rotary valve.When not turning, the control valve remains open, and the working chamber on both sides of the power cylinder piston communicates with the low-pressure oil return pipe and does not work. The oil output by the impeller pump flows back to the oil storage tank through the control valve.When turning, the driver turns the steering wheel to drive the steering shaft and gears, so that the distribution valve is in a working position corresponding to a certain turning direction, and the corresponding working chamber in the steering power cylinder is disconnected from the oil return pipeline, and is connected to the output pipeline of the impeller pump. The other cavity is still connected to the return oil pipeline.Product descriptionwholesale p