wwest Posted December 29, 2007 Share Posted December 29, 2007 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? Quote Link to comment Share on other sites More sharing options...
RX400h Posted January 3, 2008 Share Posted January 3, 2008 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! Quote Link to comment Share on other sites More sharing options...
wwest Posted January 3, 2008 Author Share Posted January 3, 2008 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. Quote Link to comment Share on other sites More sharing options...
RX400h Posted January 3, 2008 Share Posted January 3, 2008 That could very well be; it certainly wouldn't surprise me if they are! Quote Link to comment Share on other sites More sharing options...
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