One Minute Primer What is the purpose of the adaptor valve on a tractor trailer?
Published on:
2021-09-15
Adaptor valves were first used on models with front discs and rear drums. Because the disc brake has the characteristics of automatic gap adjustment, while the earlier drive axle used a non-automatic brake gap adjustment arm. In order to solve the problem that the front brake is too sensitive when braking due to the increase of the brake gap in the front disc and rear drum type vehicles, the front axle braking system is equipped with an adaptor valve for adjustment.
Adaptor valves were first used on models with front discs and rear drums. Because the disc brake has the characteristics of automatic gap adjustment, while the earlier drive axle used a non-automatic brake gap adjustment arm. In order to solve the problem that the front brake is too sensitive when braking due to the increase of the brake gap in the front disc and rear drum type vehicles, the front axle braking system is equipped with an adaptor valve for adjustment.
Adaptor valve function braking force lightly softly, heavy pedal is not affected
Due to a series of reasons, the braking system of the tractor may be out of sync, or the braking of the guide wheel may be earlier than the rear tires. In order to prevent the phenomenon of "head pushing" on slippery roads, most users will lift the braking system of the guide wheel after purchasing the vehicle. Although this will avoid certain dangers, but the braking distance is invariably much longer, so is there a simple way to change this situation? Let's start here with a brief explanation of how the adaptor valve works.
One Minute Primer What is the purpose of the adaptor valve on a tractor-trailer?
In the above line drawing, the horizontal axis is the input air pressure and the vertical axis is the output air pressure.
Webco Jiang said, in fact, the working principle of the adapter valve is very simple, that is, through the valve internal adjustment mechanism, when the air pressure input to the adapter valve is lower than a certain value (we assume that the value is 3 kg), the air pressure at the output is about 1 kg, at this time the adapter valve plays a decompression role; when the air pressure input to the adapter valve is greater than the value of 3 kg, the air pressure at the output is synchronized with the input, at this time the adapter valve does not play any role When the air pressure input to the adaptor valve is greater than 3 kg, the air pressure at the output is synchronized with the input, and the adaptor valve has no effect.
One-minute introduction What is the purpose of the adaptor valve on the tractor?
When the brakes are applied lightly, the front axle brakes will be softer; when the brakes are applied heavily, the front axle brakes will not be affected.
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