Cummins Holset VGT Turbo Actuator, Turbo Wastegate Actuator | What are they?
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- Опубликовано: 24 май 2022
- Turbos have all kinds of actuators. Wastegate actuators can be air powered, or electric, VNT actuators, VGT actuators, etc. They all share a name, but have different functionality. Lets take a swing at explaining them!
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Awww, my bby the SRA (what you call the electronic VGT actuator). I designed that a long time ago.
Which actuator will be best for an exhaust brake?
Does pneumatic vnt actuator have to be recalibrated when a new turbo is installed?
Yes, the pre-load on the actuator rod normally has to be adjusted, but the necessity of an actual calibration as far as the ECU will vary depending on the application
How could a VGT actuator prevent an engine from running if it were stuck? I had problems where my truck would start and then slowly stall out and die. It would usually run for a bit then stall but eventually after several restarts it would shut off immediately after being started. I had the actuator replaced and haven't had any problems since but I don't understand how this thing could totally prevent my truck from running if it just controls air flow from the exhaust
Hypothetically, if the VGT was completely in the closed position and restricting air flow to the point that exhaust gas could not escape fast enough that the back pressure reached a level high enough to overcome the pressure of engine combustion, then it would stall the engine at that time.
Its effectively the same thing as plugging the exhaust to shut a motor down, but in a slower fashion as the exhaust route was not 100% blocked.
Again, just a theory.
@@momentumworx well I think you're right cus Peterbilt had wrote on my work order it was due to high exhaust back pressure
Can I send mine for a rebuild Isx15 2014 with that gear type actuator vgt,where u guys at
We don't rebuild the actuators, but we have new turbos and actuators available. Send us an email with you part number, Info@momentumworx.com
@@momentumworx thanks will do