How a Turbo Works

[emoguitarboy]

Thought this would be helpful for Newbies:

http://youtube.com/watch?v=Xp-EVOPBhIo

 

[Snobordin8]

Here's a page that has lots of info about how a turbo works as well:

http://www.theturboforums.com/turbotech/main.htm

 

[emoguitarboy]

Kinda reminds me of the lame videos in shop or science class from back in the day when I was in school. That is the basic basics of a turbo for sure. If you really want to learn about turbo chargers more and indepth I suggest reading Garrett's write up of Turbo Tech articles 101, 102, and 103. They will help you understand far more than just the basics of a turbo charger. This covers everything from wastegates, and BOVs and their uses to understanding what "trim" means, understanding turbine housing A/R and housing sizing and lastly how to read a compressor map.

Turbo Tech 101 (Basic)

Turbo Tech 102 (Advanced)

Turbo Tech 103 (Expert)

Curtsy of http://co.dsm.org

 

[kenamond]

Have you noticed the DSM exhaust mani in the Garrett turbo tech section for divided housings (forget if it's 102 or 103)?

 

[tlikethedrink]

wheres my checkbook! .

 

[emoguitarboy]

So what's the deal with the 2 chambers in the Garrett turbo?

 

[keslerkaiyu]

Here's another good video I ran across while researching.

http://videos.howstuffworks.com/turbocharger-video.htm

 

[TSG59_Steve]

Great post, thanks for the info!

 

[emoguitarboy]

Yea, i never like that HSW video for some reason... I really wish I could find one that shows in depth the whole turbo setup from air comming in to exhaust out and everything in between. Maybe its time to go grab the handy cam

Btw I'd love to see Mythbusters do i-DEI, electric superchargers, Turbos and S/C

 

[kenamond]

So what's the deal with the 2 chambers in the Garrett turbo?

It separates exhaust "putts" that would otherwise overlap with each other. On our motors, #1 and #4 fire out of phase (one's on the exhaust stroke while the other's on the compression stroke). Same with #2 and #3. So the #1+#4 (and #2+#3) exhaust is roughly a continuous stream of exhaust. A divided scroll housing on our motor would let 1+4 drive "half" of the turbine wheel while 2+3 would drive the other half, and they wouldn't "cross-talk" with each other.

The big divider in the 1g/2g exhaust mani keeps those pairs of cylinders together while screening out the other pair so that flow into the collector isn't scrambled by interference of the overlapping cylinders.

Because the 1 and 4 cylinders are out of phase, one is blowing exhaust while the other isn't. The small dividers keep one cylinder from blowing up the other runner (#1 blowing up #4 or vice versa). It also steers the exhaust toward the turbine housing.