Notices
SL55 AMG, SL63 AMG, SL65 AMG (R230) Discuss the SL55, SL63 and SL65 AMG.

Turbocharger design

 
Old 03-06-2009, 04:20 PM
  #1  
Member
Thread Starter
 
Join Date: Jun 2005
Location: Bay Area, CA
Posts: 171
Received 0 Likes on 0 Posts
05 E55, 07 SL65, 06 S4
Turbocharger design

I am rather surprised to notice that AMG does not use water cooled bearings, a set-up used on much lesser cars to increase turbocharger life.

Does anybody have information on the thinking or engineering supporting this selection?
CA_E55 is offline  
Old 03-06-2009, 04:31 PM
  #2  
alx
MBWorld Fanatic!
 
Join Date: Dec 2004
Posts: 4,213
Received 195 Likes on 170 Posts
the only thing i can think of is that larger low-compression engines with little overlap in camshaft phasing have naturally low exhaust temps. thus, maybe ze germans decided that there is no need for water cooled bearings.

besides, modern ballbearing turbos are far less susceptible to cooking oil so oil cooling is prolly sufficient and keeps things somewhat simpler.

alex
few cars
alx is offline  
Old 05-03-2009, 09:52 PM
  #3  
Member
Thread Starter
 
Join Date: Jun 2005
Location: Bay Area, CA
Posts: 171
Received 0 Likes on 0 Posts
05 E55, 07 SL65, 06 S4
Correction

After getting access to more pictures and engineering designs, I found that there is in fact a coolant supply (from the bottom) and rises through the t/c bearing to keep temperatures in check - particularly after engine shut down.
now I can sleep much better again....
CA_E55 is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Turbocharger design


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: