Bypass valve: what is it and what are its functions?

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Automotive world is full of many innovations, which can improve vehicle in any way. So, nowadays a car tuning is very popular, due to which drivers can equip their cars with components capable on changing their car’s condition and specifications. Bypass valve is a device, which is installed on junction pipe between intake manifold inlet and turbine exhaust exit. Main purpose of this device is disposal of exhaust emissions high pressure. So, this component allows partially avoid turbo lags.

To understand, what is bypass valve you must determine turbocharger’s operational principle. If you reduce speed right after acceleration, the engine will be in braking position. Cylinder fuel supply will stop, which will significantly reduce rpm.

1. Bypass for effective thermal regulation. 2. Bypass valve – a simple device. 3. How many bypass valves in a car?
Bypass valve: what is it and what are its functions?

For more protection of turbine and engine from extra pressure, manufacturers invented a bypass valve device. So, these devices became widespread, because manufacturers found out that there is no need to vent extra fumes, and another use could be found for them. Many experts think that such pressure is better direct back on gate to turbocharge, than spray it around. That’s why bypass valve is used. To put it simply, bypass valve is a recycling system, which is cheap in maintenance, but maximum efficient. With development of automotive tech, this device will soon gain mass popularity. Bypass valve is a turbine protector and potential surging, which often leads to unstable engine work and in future to loss of power or breakdown. This device removes an excess noise from engine bay, which scares novice drivers.

Performance status of this device is very important for normal work of engine turbine. If bypass valve, or, to be more specific, its rubber diaphragm loses its elasticity, it will lead to acceleration jam. The less diaphragm containment is, the worse it affects the car. To inspect this component, you must make an exhaustion using a valve control tube. Besides, you must also check the containment of the tube.

Bypass valve is referred to places, of which even experienced drivers have no idea. So, when this device fails, many drivers can’t identify the problem. So, they won’t know, where and what to look for, or worse – they can start repairing an operational component.

Bypass valve: what is it and what are its functions?

1. Bypass for effective thermal regulation.

Bypass is called a valve, which equalizes steam, gas or liquid pressure level in different systems. Aside this, bypass valve serves as a protector, which is necessary for high pressure level reset. In this case, the reasonable question is: how is this device used in a car. Everything is quite simple, because it is placed in thermostat. Each driver knows that main thermoregulatory cooling system is based on thermostat. This small element has a form of cylinder and reacts on cold proof coolant temperature alterations, distributing all flows for active cooling. All manufacturing plants produce integral thermostats. Due to this, most drivers don’t even try to understand the purpose of this device, because in case of failure, it is fully replaced.

The operational principle of bypass valve is very simple. When cool engine is started, the cold proof coolant starts circulating without cooling radiator. This continues until engine gains working temperature. Closed main valve, which is placed in upper part of thermostat, will prevent leakage of cooling liquid into radiator. In this moment the bypass valve will be open.

Main valve will be open in the moment, when temperature of the liquid exceeds a specified endpoint, and bypass valve will gradually close end of lower junction pipe. This is a partial circulation of cooling liquid through radiator. If the temperature exceeds terminal threshold, the bypass valve will close and main valve will direct cooling liquid into radiator.

Bypass valve: what is it and what are its functions?

2. Bypass valve – a simple device.

It can sound strange, but bypass valve is a small thin metal plate, which is 20-30 mm in diameter. The plate itself is pinned to thrust rod of extensive jar. Construction of this component and operational principle is the same for all types of thermostat, which is part of solid and liquid thermal expansive elements.

Experts and many manufacturers point on bypass valve’s one significant flow, which is its rubber diaphragm. This component is placed on plate and occasionally loses its elasticity and containment. This happens because of different adverse effects: thermal, shock stress, charging pressure.

3. How many bypass valves in a car?

Drivers and those, who are just interested, should know that some combustion engine models can be equipped with one more protection valve. In this case, we talk about cars with turbocharged engines, which boost in combustion chambers. In this place the bypass valve will fulfill its direct function – protect valve control system from extra pressure.

To gain maximum power, some engines are equipped with turbochargers. In moments, when combustion engine is under load and driver stops pressing acceleration pedal, excessive pressure forms in the system. So, this signal will tell of us of bypass valve, which will level air pressure.

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