What is the difference between gas brake and oil brake
Whether the braking performance is excellent or not is an essential parameter when consumers choose vehicles. In the vehicle braking mode, the gas brake and the oil brake are two relatively steep utilization rates. Today, let's talk about the difference between the gas brake and the oil brake, and what models are applicable to respectively.
1. Structure
The air brake is typically composed of air compressor, brake valve, brake air chamber, air storage cylinder, barometer, air pump, pressure spring, safety valve, brake pipeline and additional components.
Semi Trailer Manufacturer says The structure of the air brake is relatively complex, the required installation space is also relatively large, suitable for medium and large vehicles.
In contrast, the structure of the oil brake is also simple, typically composed of the brake pump, pump, oil cup and connecting pipeline, etc., through the engine oil pump power braking. This also makes the installation space tiny, suitable for light vehicles.
In terms of braking medium, there are also differences between the two, the air brake mainly relies on air, after pressure to promote the brake pad work; the oil brake is a special brake oil as the medium, through the oil to promote the brake pad.
2. Principle
Air brake:
It mainly relies on pneumatic drive to achieve power braking.
When the vehicle stops, the push rod in the brake chamber controls the brake in the braking state under the action of the spring force;
after the vehicle starts, the air pump runs, and when it reaches a certain pressure, the push rod in the brake chamber overcomes the spring force under the action of air pressure, the brake state is released, and the car can run;
when it is necessary to brake, the brake pedal controls the brake valve, allowing the pressure in the brake chamber to be released and the push rod to brake under the action of spring force.
Oil brake:
When the owner steps on the brake, the piston and seal bowl in the brake pump will be pushed by the brake pedal, the push rod plays a role, the brake oil is transmitted to the piston of each brake pump through the tubing, and then the friction plate and the brake drum produce friction, play the braking effect.
3. Characteristics
Air brake:
The response speed is quick, the braking force is strong, and the size of the braking force output is only related to the size of the air pressure in the air reservoir and the opening degree of the valve, and has nothing to do with the strength of the step down; in uphill and downhill road conditions it is not easy to slide, full speed can stop, tough braking is not easy to roll over.
The structure is relatively complex, the installation space is large, the braking wear is obvious, the later maintenance is relatively complex; frequent stepping on the brake pedal while going downhill can also lead to insufficient air pressure and brake failure. Some antique cars need to idle for a period of time after parking.
Oil brake:
Simple structure, tiny volume, relatively tiny requirements for installation space, brake force output is soft, not easy to appear locked, elevated ride comfort, fewer components, maintenance is more convenient.
The reaction speed is slightly moderate, the braking force is weak, and the oil circuit needs regular maintenance.
4. Applicable models
The air brake is mainly used in medium and heavy trucks and heavy buses. In recent years, it is more and more widely used in tiny light trucks.
Oil brake is installed on light tonnage models, such as passenger cars or tiny micro cards.
Therefore, if the car owner is a medium heavy truck, the general choice of air brake;
if the owner uses a micro card or light truck, it should be combined with the daily operation conditions. If the carrying capacity is not large, the transportation speed is not quick, the road condition is not complex, the general choice of oil brake is sufficient; if the bearing capacity is large, usually run great speed or walk complex road conditions, it is recommended to choose the air brake.
5, maintenance
Check brake pad thickness and brake disc/brake drum wear regularly, and replace the brake pad immediately when the thickness is found to be close to or less than the specified thickness, or when the disc or brake drum surface is indentation.
For vehicles with oil brake, check the liquid level of brake oil before going out. If the oil level is found to drop, check whether there is leakage of brake oil immediately. Because of the absorption of moisture in the air, brake oil is easy to fail for a long time, and it is best to replace the brake oil regularly according to the regulations, once a year.
The air brake vehicle should pay attention to discharge the water in the system frequently and replace the dryer regularly. The water in the air path system is easily corrode the pipeline and affects the braking effect, and can even lead to the failure of the braking system in serious cases. In addition, it is also necessary to check the working condition of the air pump and the wear of the air pump belt. If problems are found, they should be replaced in time.
2. Principle
Air brake:
It mainly relies on pneumatic drive to achieve power braking.
When the vehicle stops, the push rod in the brake chamber controls the brake in the braking state under the action of the spring force;
after the vehicle starts, the air pump runs, and when it reaches a certain pressure, the push rod in the brake chamber overcomes the spring force under the action of air pressure, the brake state is released, and the car can run;
when it is necessary to brake, the brake pedal controls the brake valve, allowing the pressure in the brake chamber to be released and the push rod to brake under the action of spring force.
Oil brake:
When the owner steps on the brake, the piston and seal bowl in the brake pump will be pushed by the brake pedal, the push rod plays a role, the brake oil is transmitted to the piston of each brake pump through the tubing, and then the friction plate and the brake drum produce friction, play the braking effect.
3. Characteristics
Air brake:
The response speed is quick, the braking force is strong, and the size of the braking force output is only related to the size of the air pressure in the air reservoir and the opening degree of the valve, and has nothing to do with the strength of the step down; in uphill and downhill road conditions it is not easy to slide, full speed can stop, tough braking is not easy to roll over.
The structure is relatively complex, the installation space is large, the braking wear is obvious, the later maintenance is relatively complex; frequent stepping on the brake pedal while going downhill can also lead to insufficient air pressure and brake failure. Some antique cars need to idle for a period of time after parking.
Oil brake:
Simple structure, tiny volume, relatively tiny requirements for installation space, brake force output is soft, not easy to appear locked, elevated ride comfort, fewer components, maintenance is more convenient.
The reaction speed is slightly moderate, the braking force is weak, and the oil circuit needs regular maintenance.
4. Applicable models
The air brake is mainly used in medium and heavy trucks and heavy buses. In recent years, it is more and more widely used in tiny light trucks.
Oil brake is installed on light tonnage models, such as passenger cars or tiny micro cards.
Therefore, if the car owner is a medium heavy truck, the general choice of air brake;
if the owner uses a micro card or light truck, it should be combined with the daily operation conditions. If the carrying capacity is not large, the transportation speed is not quick, the road condition is not complex, the general choice of oil brake is sufficient; if the bearing capacity is large, usually run great speed or walk complex road conditions, it is recommended to choose the air brake.
5, maintenance
Check brake pad thickness and brake disc/brake drum wear regularly, and replace the brake pad immediately when the thickness is found to be close to or less than the specified thickness, or when the disc or brake drum surface is indentation.
For vehicles with oil brake, check the liquid level of brake oil before going out. If the oil level is found to drop, check whether there is leakage of brake oil immediately. Because of the absorption of moisture in the air, brake oil is easy to fail for a long time, and it is best to replace the brake oil regularly according to the regulations, once a year.
The air brake vehicle should pay attention to discharge the water in the system frequently and replace the dryer regularly. The water in the air path system is easily corrode the pipeline and affects the braking effect, and can even lead to the failure of the braking system in serious cases. In addition, it is also necessary to check the working condition of the air pump and the wear of the air pump belt. If problems are found, they should be replaced in time.