the holset vgt

Discuss the RB20, RB25 and RB26 series engines.
240z4u
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What electronic wastegate?

Glad your taking the plunge. Let us know how it works out.


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d356bud
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The one that I purchased has an electronic internal wastegate. I'll keep you guys informed on my progress. It shouldn't be that hard, I had a senior project in undergraduate school that was a lot more difficult than this. I just have to decide on an fpga or a microcomtroller.


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WhatsADSM
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d356bud wrote:The one that I purchased has an electronic internal wastegate. I'll keep you guys informed on my progress. It shouldn't be that hard, I had a senior project in undergraduate school that was a lot more difficult than this. I just have to decide on an fpga or a microcomtroller.
Yea what do you mean electronic wastegate? I am assuming you are getting a new holset (IIRC the VE series) with the smart actuator (not wastegate). Do you have a link to the turbo you bought?

Also it is likely a lot more difficult than you are thinking. Moving bits around is easy. Reverse engineering the protocol, and/or taking over the mechanics of the stock actuator is not so easy.

Again, assuming you are getting a new holset (IIRC the VE series) but it really depends on what route you want to take... But here would be your options:

1) Create a simple controller, research/reverse the CAN interface. Interface your controller to the CAN. Command over motor/actuator position over CAN.2) Do some machining to get your own stepper/servo onto the stock gearing system and then have a simple controller to control your servo/stepper (which would likely need to be remotely mounted due to heat)3) Rip apart the stock PCB attach directly to the existing motor + encoder (I assume). Then you will need a complex BLDC servo controller but can use the stock motor.4) Something completely custom in the mechanics (and electronics) department that controls the actuation. Don't use any of the stock actuator.

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d356bud
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I know, There probably will be a lot with this but I have plenty of time to work on it

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RustspecS13
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Why not use a servo? I know r/c servos are cheap, can they can be controlled very easily as they have a simple 0-5v signal. Some are also very strong and cheap.

It can be remote mounted, and in a box as they do not like heat. I think a simple 3 d map would work perfectly. tps vs map vs rpm.

Obviously using the oem motor/controller would be ideal as its made to handle the temps, but it may not be worth the work if it can be replicated easily.

~Alex

240z4u
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You will need very high torque servo! I looked into the Delphi unit and was having trouble finding something of a reasonable size to control this thing.

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PantherRacer
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Up from the depths...36 posts high...blazing fire!
Terror in the Sky!

ok... guess everybody gave up on this?


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