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How do you determine pressure ratio when designing a compressor for turbocharger?
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What is a blow off valve and how does it work?
The blow-off valve should not be confused with a waste-gate. The waste-gate is a device that by-passes the turbine wheel of the turbocharger, limiting the shaft-speed of the turbocharger. Therefore, limiting the boost (pressure) that the compressor generates and keeping the turbocharger from over-speeding. A blow-off valve is mounted in the intake plumbing between the turbocharger compressor and the throttle plate. The blow-off valve is a second safety measure against the turbocharger over-boosting and damaging the engine. The blow-off valve is more commonly used to keep the turbocharger spinning when the throttle plate is suddenly closed. When the turbocharger is generating maximum boost pressure at full throttle and then the throttle is suddenly closed, compressed air coming from the compressor slams against the throttle, generating extremely high pressures that travel backwards to the compressor stopping the compressor from spinning. When the throttle plate is again opened, the engine must spool the turbocharger shaft again. The effects of this high pressure can also be very damaging to the turbocharger.
Why could a turbocharger be surging?
Compressor surge is when the air pressure after the compressor is actually higher than what the compressor itself can physically maintain. This condition causes the airflow in the compressor wheel to back up, build pressure, and sometimes stall. Common conditions that result in compressor surge on turbocharger gasoline engines are: * A compressor bypass valve is not integrated into the intake plumbing between the compressor outlet and throttle body * The outlet plumbing for the bypass valve is too small or restrictive * The turbo is too big for the application
Who need to use a diverter valve?
A diverter valve is used in turbocharged car engines as part of a pressure relief system. It helps to prevent a compressor surge as well as reduce the wear and tear on the engine and turbocharger.
What is the difference between a pulse system and a constant pressure turbocharger?
Types of turbochargers Turbochargers are of two types and they are pulse and constant pressure type turbocharger. Pulse type turbocharger: In pulse type turbocharger, the exhaust gas directly enters the turbine side and drives the turbine with the exhaust gas energy. The connection from the exhaust side of an engine is directly connected to the turbine side of a turbo charger. The pipe connections from the exhaust gas towards the turbine side are generally small in length and exhaust grouping is provided to prevent the blowback of gases from one cylinder to another. Constant pressure type turbocharger: In constant pressure type turbocharger, the exhaust gases gets collected in a single exhaust gas reservoir, where the pressure is maintained constant so as to avoid any fluctuation in the exhaust gas energy pressure. The exhaust gas is introduced to the turbine side after maintaining the pressure inside the cylinder. Materials: Turbine and compressor blades: Steel or nickel alloy. Volute casing: cast iron Bearings: steel or gun metal.
What is unlikely to affect refrigerant charge accuracy Ac compressor failure to calibrate the scale not accounting for refrigerant hoses using pressure reading to determine corr?
Ac compressor
Which component when open allows engine exhaust to bypass the turbocharger turbinereducing intake pressure?
when pressure increases in compressor side than turbine side in turbo then a waste gate is opened and allows the exhaust to bypass through exhaust pipe until both side pressure not comes equal. As the result intake pressure reduced.
How the compressor working?
Refrigerant enters the compressor inlet as a low pressure vapor. The compressor increases the pressure, and discharges it as a high pressure vapor.
What is a Turbo?
Short for turbocharger, It is an exhaust driven air compressor. Exhaust gases exit the engine and enter the turbine housing where it spins the turbine wheel. The turbine wheel is connected to a shaft which the compressor wheel is also attached. When more power is needed, the turbine/compressor wheel assembly spins faster and the compressor wheel sucks in more air and compresses it creating boost/positive manifold pressure/more power.
What is a Supercharge Engine?
An engine which is equipped with a supercharger. A supercharger is a special kind of air compressor which forces larger than normal amounts of air into an engine, allowing for the use of more fuel, thus increasing the the horsepower output of the engine. Most cars run with just air pressure around us. A Supercharger or Turbocharger is simply a pump which raises the pressure. A Supercharger is usually driven by a belt or chain and a Turbocharger is driven by exhaust gasses.
What can be used to check for leaks on the pressure side of a turbocharger system?
Soapy Water
What side is the low side and what side is the high side?
It is difficult to determine the different pressure ports on your air conditioning compressor without knowing the make and model of the automobile. In most cases the low pressure port is on the right hand side of the air conditioner compressor.
What component regulates the pressure in a turbocharger?
Pressure in a turbocharger is regulated by various components such as exhaust gas pressure,condition of blower and impeller blades,condition of gas passage on suction and exhaust side,condition of air filters,closing and opening timings of exhaust and inlet valves.
