目录
Hydraulic Brake :
液压制动器的施工和工作
The master cylinder is connected to all the four-wheel cylinders by tubing or piping. All cylinders and tubes are fitted with a fluid that acts as a link to transmit pedal force from the master cylinder to wheel cylinders. Brake Fluid The fluid-filled in the hydraulic brake system is known as brake fluid. It is a mixture of glycerine and alcohol or castor oil and some additives. The Master cylinder consists of a piston that is connected to peal through the connecting rod. The wheel cylinder consists of two pistons between which fluid is filled. Each wheel brake consists of a cylinder brake drum. This drum is mounted on the inner side of the wheel. The drum revolves with the wheel. Two brake shoes that are mounted inside the drum remain stationary. Heat and wear resistant brake linings are fitted on the surface of the brake shoes.
液压制动器工作
液压制动器主缸的工作：
Method of Bleeding of hydraulic brakes:
2) Manual Bleeding
3）重力出血
当渗流器螺钉打开时，压力力和制动流体从渗流器螺钉中出来。使用压力泄放器，您可以在没有任何助手的情况下出现液压系统。压力下使用的压力通常为104至138kPa。
b）松开至少一个完整的螺钉。
c）有助理抑制和保持制动踏板，然后拧紧渗流器螺钉。
d）让您的助手释放制动踏板。
e) Repeat steps b,c & d until the fluid flow in the container is free of air bubbles. Periodically check the brake fluid level in the master cylinder and brake fluid of correct grading to keep the reservoir filled.
f) Repeat this procedure at each wheel.
3）重力出血:
重力出血是出血的方法，它使用地球的重力从液压系统中排出空气。没有外力被施加到制动液中。为了采用以下程序流出系统。
a）在车轮上，圆筒松开玻璃螺钉至少一个全转。
b) Remove the cover from the master cylinder reservoir. The level of brake fluid to flow from the bleeder screw.
c) Watch the bleeder hose when brake fluid flows from opening and tightening the screw.
d）按顺序在每个滚轮处重复此过程，应该改变。
液压制动系统的类型：
The hydraulic braking scheme is categorized as,
基于摩擦接触系统，有两种液压泵 -
（i）鼓制动器或内液压阀膨胀。
（ii）液压盘式制动器或内部液压制动器。
2. Based on the brake force allocation-there are two kinds of hydraulic brakes-
(i) single-acting hydraulic pumps
（ii）双作用液压泵
液压盘式制动器：
液压盘式制动器的构建：
A disc brake consists of a rotating disc and two friction pads that are actuated by a hydraulic braking system. The friction pads remain free on each side of the disc when brakes are no applied. They rub against the disc when brakes are applied to stop the vehicle.
Working of Hydraulic Disc Brake :
In a disc brake, the fluid from the master cylinder is forced into a caliper where it presses against a piston. The piston in turn crushes two brake pads against the disc that is being attached to the wheel, making it to stop or slow down. The main advantage of disc brakes is their resistance to wear as the discs remain cool even after repeated brake applications.
Difference between Mechanical Braking System and Hydraulic Braking System
| Sr. no. | 机械制动系统 | 液压制动系统 |
|---|---|---|
| 1. | 更少的制动效率。 | More Braking Efficiency. |
| 2. | Poor Anti fade characteristics | 更好的反淡化特性 |
| 3. | 由于更多的零件而复杂。 | Simple in construction |
| 4. | 它没有自我补偿 | Self-compensating system |
| 5. | Construction is less flexible | Construction is more flexible |
| 6。 | Low mechanical advantage | High mechanical advantage |
| 7。 | External Lubrication is required | 系统是自润滑的 |
| 8。 | No leakage problem | 可能发生泄漏 |
| 9。 | 没有液压油 | Hydraulic oil is used |
| 10. | More effort required for braking operation |
制动操作所需的努力 |
| 11. | ch | 昂贵的 |
| 12. | 前：电机周期 | Ex: Cars and Jeeps. |
液压和气动制动系统之间的差异：
Hydraulic vs Pneumatic braking System – Comparison between Hydraulic and Pneumatic Braking System
| Sr. no. | 液压制动系统 | 气动制动系统 |
|---|---|---|
| 1. | 用作工作介质的制动液 | 压缩空气用作工作介质 |
| 2. | Simple in construction & less expensive. | 复杂的建筑和昂贵。 |
| 3. | 与空气制动器相比占用的空间较少 | 与液压制动器相比，占用了更多空间 |
| 4. | The system is self-lubricating | Need to lubricate mechanical parts |
| 5. | 出血是必要的 | 不需要出血 |
| 6。 | 增加的制动努力，但比空气刹车更强大。 | Most powerful than Hydraulic brake |
| 7。 | Low maintenance cost | Maintenance cost is more |
| 8。 | Mostly used in passenger cars, LMVs | Mostly used in heavy vehicles like buses and trucks. |
Advantages and Disadvantages of Hydraulic Braking System :
液压制动系统has some advantages and limitations over other Braking System i.e. Mechanical, Pneumatic braking System ;
Advantages of Hydraulic Braking System :
The advantages of the hydraulic braking system are as follows,
Disadvantages of Hydraulic Braking System :
Disadvantages of the hydraulic braking system are as follows,
