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Jlnance
Posted on Thursday, December 15, 2005 - 08:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I found this link over on slashdot and I thought some of you would find it interesting. BMW is using the exahust gas to drive a steam engine. Interesting concept. Wonder if it comes with a whistle :-)

http://www.gizmag.com/go/4936/
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Davegess
Posted on Thursday, December 15, 2005 - 11:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

That is very cool
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Blake
Posted on Thursday, December 15, 2005 - 01:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Why not just put the turbine directly into the exhaust tract? : ? Oh... already been done before and much simpler too. :/

I don't believe the 15% gain in efficiency is achievable in normal operational scenarios. There just isn't that much heat coming out of a cruising automobile engine. Now, if the engine is cranking at WOT, that 15% seems plausible to me.

I'd rather have an efficient turbocharger. You can achieve similar improvements to efficiency and get a whole heck of a lot more power gain.

(Message edited by blake on December 15, 2005)
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Blake
Posted on Thursday, December 15, 2005 - 01:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yep, "Combining the innovative assistance drive with a 1.8 litre BMW four-cylinder engine on the test rig reduced consumption by up to 15 percent...

They are talking about the WOT case there.
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Natexlh1000
Posted on Thursday, December 15, 2005 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I always thought that a stirling-cycle engine would go great with the heat from a catalytic converter.
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