I have a general question about turbochargers. The application would be for domestic cars. I've read a lot about the peak rpm numbers for turbochargers, but no low end numbers. The overall concensus seems to be 150,000 - 200,000 depending on the application. What I want to know is the rpm profile in relation to load and/or an engines rpm. My guess is that it would be a 3-D map similar to a fuel map; however, I need a low value to even begin to make a calculation.
Below are my assumptions. This isn't a model specific question, so I use these as general.
2.5 litre engine 4 cylindar 4 stroke 8.5:1 compression 28/8 Turbo size. Idle 500 rpm Turbo redline 150,000 Engine redline 6000Questions:
What is the rpm at idle/no load? What's a safe way to measure this IRL? Anyone know a Garrett et.al. engineer...lol?
Thanks in advance for ANY input!
-- Matt