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Video Supercharging

Video Supercharger
Video Summary

Video Truck Supercharging
Video 2-stage Turbocharger
Video Super-/Turbocharger
Video Parallel Supercharging

Video Roots Blower 1
Video Roots Blower 2
Video Roots blower 3

Video Turbocharger 1
Video Turbocharger 2
Video Turbocharger 3
Video Turbocharger 4
Video Turbocharger 5
Video Turbocharger Damage
Video Turbocharger Repair

Video Var Nozzle Turbine 1
Video Var Nozzle Turbine 2
Video Var Nozzle Turbine 3

Video Boost Pressure Control
Video Turbo Engine 1
Video Turbo Engine 2

Video Charge Air Cooler 1
Video Charge Air Cooler 2
Video Charge Air Cooler 3

Video Pop Off Valve
Video Compr. Supercharger
Video G-charger
Video Turbo Oldtimer
Video 2-stroke Turbocharger

Video Supercharging 1
Video Supercharging 2


          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  Pop-off valve











The pop-off-ventil reduces the turbo-lag ...

If you enlarge the above picture, it should be easier to recognize that it is the fresh-air side of a turbo-charged system. Whether a Diesel- or a petrol engine, the valve shown here is only needed by a turbo-charger. One could also call it a pressure-relief valve. However, as a pressure-relief valve, no fixed value can be assigned to it.

In the sectional view, a valve spring can be seen in the valve, this is lifted through vacuum, in a separate area, against a spring. Activated in this way, the valve releases the pressure outwards between the compressor-turbine and the intake valves.

This function is used to maintain the RPM of the turbine when the driver takes his/her foot off the gas pedal. In this case, either a flap in the air-intake would be closed or the inlet valve-lift would be limited, which would cause a congestion and would slow down the turbine.

In a number of vehicles one can also hear the switch-over when the gas pedal is abruptly released. Apart from this, it must be ensured, that the valve properly seals to the outside, because pressure loss has a direct negative influence on the performance and the efficiency. 10/12






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Translator: Don Leslie - Email: lesdon@t-online.de

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