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How to use the brake proportional valve

How to use brake proportioning valve

What is a brake proportioning valve?

The brake proportional valve is a valve that distributes the braking force of the four wheels.

What does a brake proportioning valve do

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The state where the wheels of the car stop rotating and slip on the ground during the braking process is called lockup. If the rear wheels lock up before the front wheels, it will cause the danger of tail drift or even a U-turn.

The brake proportional valve can adjust the brake fluid in a very short period of time according to the specific conditions of the vehicle load and road resistance, so that the braking force of the front and rear brake pads is close to the ideal curve, which can prevent sideslip and friction to a certain extent. Lock, and then shorten the braking distance and enhance the braking effect.

How to find out if the brake proportional valve is broken

When the brake proportional valve fails, the braking effect will decrease and the braking distance will become longer. The first thing to lock up in an emergency brake is the rear wheel, and the rear of the car will be erratic or even roll over.

The brake proportional valve can only be used for the rear wheels. Comparing with ABS brake system, it can accurately control each wheel without locking, allowing the vehicle to control the direction. The slightly higher-equipped car is also equipped with an ESP system, which can keep the vehicle stable by controlling ABS, steering and other components.

For a car, the shortest possible braking distance requires the wheels to be in a state of imminent locking, that is, rolling with a little slippage. At this time, the tires will exert the maximum friction to stop the vehicle quickly, and also allow the vehicle to maintain the function of steering.

Chrome Brake Assembly

What are the components of a car brake system?

1. Brake pedal

The pedal assembly acts as a leverage. When stepping on the brake pedal, the pedal exerts force on the piston of the master cylinder. The pedal is in the cab with simple operation.

2.Brake master cylinder

The brake master cylinder is a hydraulic pump that generates the pressure used for braking and distributes the pressure to the four-wheel wheel cylinder through other compnents.

3.brake line

In order to adapt to the shape of the car, the brake line is also ever-changing, and the line is divided into rubber hose and iron pipe, which are mainly used to transport brake oil.

4.Brake load sensing proportional valve

The proportional valve is generally located in the rear brake line, and by sensing the weight of the vehicle to limit the pressure on the rear wheel brake to change the rear wheel braking situation, this can also be called mechanical ABS.

5.brake booster

There are brake vacuum booster and hydraulic brake booster. Most cars use a brake vacuum booster. By using the vacuum of the car, the driver's pedal strength is reduced and the braking safety is increased.

6.brake fluid

Brake fluid is a special oil, which is a necessary condition for braking. Brake fluid is corrosive. It will need to be washed with a lot of water when it gets on the car body.

7.Brake cylinder, brake pads

There are brake cylinders and brake pads on each wheel. In addition, brake pads are wear parts, which should be replaced when the friction part reaches a certain level.

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Post time: Feb-21-2022