Dumb Question

[rarson]

Okay, please forgive me, but I think I don't understand.

I was under the impression, from reading on this forum, that turbocharger compression was adiabatic, because it heats the air up as it compresses.

Then I read about Smokey Yunick's adiabatic engine (which I had never seen before) which seems to imply that heat is neither gained nor lost. Dictionary.com give this definition: "occurring without loss or gain of heat."

I swear I'm not stupid, but can someone explain this to me? I have a feeling that it's got to do with the system as a whole, but I must admit I don't fully understand the usage of the same word in these two situations.

[Richard L]

I am not sure if this is the correct forum for this question to be answered.

We discussion mainly on the effect of water injection and how heat can be lowered. We also accept that the heat comes out of the compressor is hot.

Richard

[JohnA]

Yep, try this engineering forum, it is more appropriate. (register first)
Smokey's engine has been discussed in the past if you do a check, along with 6-stroke designs:

http://www.eng-tips.com/threadminder.cfm?pid=71