Sylvain VAN DER WALDE wrote:
"Chris Bacon" wrote...
Sylvain VAN DER WALDE wrote:
I'm an "old boy", now. I worked in the motor trade between 1956 and 1988,
approx. I don't think that the "interesting idea" in question is a new
one.

I can't think of many very new ideas in engine development -
improvements made with materials, maybe.


Petrol injection? It's not that old.

Um. Petrol injection is a refinement of Mr. Diesel's invention of the
1890s, isn't it? The concept is over 100 years old!


Just a thought. Is the Wankel rotary engine still being used by anyone? I
believe that Mazda used one in some of their cars not so long ago.

These engines are why I mentioned head gasket thickness somewhere...

You've put "your foot in it", Chris. Find out more about these engines, and
you'll know why.

I absolutely do not know why. IIRC someone said that "the thickness of
the head gasket influences compression ratio" or words to that effect,
& I said that might be true for *some* engine designs...


You wouldn't be testing my knowledge, would you?

No, not at all.... would you regard the Wankel as a one-stroke, 1 1/2
stroke, 3-stroke, or four stroke, though? ( here - FWIW ).