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wwest

A Silly Question....maybe.

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If I had the V6 heads milled to get a 13:1 compression ratio on my '01 AWD RX300 and then restricted the intake manifold pressure via the DBW system such that the effective compression was never greater than 10:1 would I have a "virtual" Atkinson Cycle engine?

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Good question, W; unfortunately, I haven't taken thermodynamics since 1978, so I'm a bit rusty.

Judging by the lack of responses, there are not many MEs who work with engines around here, either!

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Good question, W; unfortunately, I haven't taken thermodynamics since 1978, so I'm a bit rusty.

Judging by the lack of responses, there are not many MEs who work with engines around here, either!

Actually I've been wondering if the RXh and HH might actually be using this technique to derate the V6 engine and thereby improve FE.

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That could very well be; it certainly wouldn't surprise me if they are!

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