Turboschwingen AJM doch andere Ursache?! | Posts 16+

I found it! / I've found what I was looking for!
I found a company that is willing to order and sell me a can!
I should probably provide the data from the nameplate tomorrow.
I just took a picture of it and I'm not sure if...
Whether it's still the original part from 1999 or if it was already replaced by the previous owner!
What is the diameter of the large one?
Please take a look at the picture so I can call the nice lady tomorrow!
"Thank you!"
http://www.webhosting4free.biz/messknecht/Turbolader.jpg

herwigw wrote:

Am I understanding correctly that the spring force must be as large as usual? Is the program pre-defined, or does the engine control unit always "malfunction" first?

In every control loop, the parameters must comply with the specifications. If something is not correct, it can lead to oscillations in the control system. In the worst case, the regulation may no longer function at all.
If the control loop had a position monitoring function, this error could be detected or read out.
Currently, there are several VTG (Variable Train Heating) regulations that utilize electric motors. These systems need to be diagnosable, which means the control system should have precise knowledge of the position of the actuator.
In pneumatic VTG systems, position monitoring is not implemented, so the Electronic Control Unit (ECU) can only "estimate" the position of the actuator. If the spring force is incorrect or the rod length is improperly adjusted, the actuator will not be in its predetermined position. The control system must then readjust, which could potentially cause it to reach its limits unexpectedly (or oscillate). This results in either too high or too low boost pressure in a turbocharger pressure regulation system.

Quote:

"How about the opposite scenario, with the impeller and the forces acting on the guide vanes inside? Is it really possible to..." It is assumed that a functioning charger will not affect any operating states. Is something pulling on the VTG rod in one direction or another, disrupting the adjustment?

In theory, the VTG (Variable Geometry Turbine) blades should also transmit forces to the support structure. However, I can't say for sure how that works in practice.


By the way, we had a similar discussion before regarding the vibrating VP37 pumps. The problem here could also be due to incorrect pump parameters causing oscillations (weakened spring mechanisms).