why aren't turbos made like this:

Thread Tools
 
Search this Thread
 
Old Mar 1, 2005 | 10:58 PM
  #1  
SkRiBLaH's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2004
Posts: 2,733
Likes: 0
From: Unknown
Default why aren't turbos made like this:

on the exhaust side, have a 2.5 inch gear connected to the exhaust turbine, and on the intake side, have a .5 inch gear connected to the intake turbine. i know this would offset the whole turbo, and it would get rid of lag, although the only downside i could see is that you'd be using or needing a wastegate rather quickly...

any info?
Reply
Old Mar 2, 2005 | 12:12 AM
  #2  
sporkcrx's Avatar
Member
 
Joined: Nov 2001
Posts: 5,272
Likes: 0
From: broke in the bay area, CA
Default Re: why aren't turbos made like this: (SkRiBLaH)

I really dont know for sure...but I think exhaust gas would have a hard time spinning that? That's my shot at it.
Reply
Old Mar 2, 2005 | 12:14 AM
  #3  
Def's Avatar
Def
Honda-Tech Member
 
Joined: Jan 2000
Posts: 1,288
Likes: 0
From: Fort Worth, TX
Default Re: why aren't turbos made like this: (SkRiBLaH)

Because the turbo NEEDS to spin fast to generate the power it needs for the compressor. The shaft torque is very small, so it needs a high RPM to generate the power.

Plus gears rob power when they transmit torque, especially at high RPM. So you'd have additional losses. Besides - it'd still have the non-linear turbine/compressor response to deal with(which is the big reason why turbos have "lag").

There's a reason the engineers that designed them did it the way they did - it's the best way to do it(with our current technology at least).
Reply
Old Mar 2, 2005 | 01:06 AM
  #4  
njn63's Avatar
Honda-Tech Member
 
Joined: Feb 2003
Posts: 6,676
Likes: 8
From: Michigan
Default Re: why aren't turbos made like this: (Def)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Def &raquo;</TD></TR><TR><TD CLASS="quote">Because the turbo NEEDS to spin fast to generate the power it needs for the compressor. The shaft torque is very small, so it needs a high RPM to generate the power.

Plus gears rob power when they transmit torque, especially at high RPM. So you'd have additional losses. Besides - it'd still have the non-linear turbine/compressor response to deal with(which is the big reason why turbos have "lag").

There's a reason the engineers that designed them did it the way they did - it's the best way to do it(with our current technology at least).</TD></TR></TABLE>

Turbos were designed a long time ago. I'm sure we have better technology today than they did then considering they were on cars before we even had Autocad.

edit: i'm not saying it would work, i'm just saying that it doesn't hurt to rethink things once in a while.
Reply
Old Mar 9, 2005 | 12:41 AM
  #5  
Def's Avatar
Def
Honda-Tech Member
 
Joined: Jan 2000
Posts: 1,288
Likes: 0
From: Fort Worth, TX
Default Re: why aren't turbos made like this: (njn63)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by njn63 &raquo;</TD></TR><TR><TD CLASS="quote">Turbos were designed a long time ago. I'm sure we have better technology today than they did then considering they were on cars before we even had Autocad.

edit: i'm not saying it would work, i'm just saying that it doesn't hurt to rethink things once in a while.</TD></TR></TABLE>

Turbos are constantly being updated and refined. The aerodynamics of the blades are always trying to be improved - hence the new GT series wheels that make more power and have less lag.

Buying a brand new $1,400+ turbo right now gets you the absolute BEST centrifugal turbine/compressor technology available to the consumer market, and software way more complex than AutoCAD was used in their development.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
csubucky19
Forced Induction
2
May 19, 2009 12:22 PM
string
Forced Induction
7
Sep 12, 2006 04:04 PM
EJ8 GSR-T
Forced Induction
20
Feb 17, 2006 11:09 AM
Endoe
Forced Induction
9
Jun 18, 2005 07:56 PM
Stunna BEN
Forced Induction
6
Jun 14, 2004 02:34 PM




All times are GMT -8. The time now is 07:40 PM.