[Christ]

Originally Posted by Kevin Johnson

My apologies -- I had in my mind that your control of injection timing was not that accurate from this initial statement (my emphasis):






Your answer then changed to:



In a review this would be a bit suspect, i.e. you're appearing to alter the data (controlled conditions of the experiment) to fit a certain hypothesis. I know you mentioned you did the experiment some years back. Rigorously, I think my answer also fits the data you initially presented. It is a confound you have not removed.

You also just revealed that you did not test whether heated fuel and/or a heated cylinder would affect the results of heated air being used. Nor did you investigate what would happen to efficiency if heated fuel, a heated cylinder and an over driven supercharger was used that compressed the same number of mols of heated air into the cylinder as would be found in room temperature air.

In review, you're right. I'm afraid that the information in my head might be a little skewed because of the length of time that has elapsed since the tests were done, and I can't accurately determine whether parts of my statements are memory or "fill in the blanks". (By the way, me saying "I'm gonna have to say yes." was actually just a sarcastic way of saying "I thought you'd just read that in what I already said".)

Remember, I was 10 at the time... so we probably DIDN'T test every possible situation. The emphasis was a question of heated air intake in a diesel engine of specific speed/output, and as such the test was run under those circumstances, from what I remember.

I'm still half thinking about the R18 engine, and how I could implement the offset crankshaft in another engine, and the benefits that could be gained from it. I dunno if I'll ever actually do it.