Miura, a lightweight aerodynamic body over a Volkswagen frame

[freebeard]

The conclusion is tough, I am not smart enough ...

Look at it this way—neither is Scuderi.

It looks plausible to me, did you read the whole wikipedia article? Generally, the air compressed in one compression cycle is not necessarily used in the corresponding ignition cycle. As for the valve timing, not much compression takes place in the lower part of the cycle it's mostly in the upper part anyway, the compression cylinder is oversized compared to the ignition cylinder, and valve lift, timing and size can all be tailored to the requirement.

All IMHO of course, standard disclaimers apply.

[renault_megane_dci]

Now I understand my mistake, I was trying to read the concept through adaptation on an existing engine which means identical capacity.

Anyway, there is more potential if you start from a diesel since this inlet valve event is happening at the beginning of the power stroke when you also inject fuel.

What's the residual pressure at the end of a standard exhaust stroke ?

And yes I did read the Wikipedia article.

The more I think about it, the least I can figure out how to squeeze induction and this ATDC spark.

[freebeard]

What's the residual pressure at the end of a standard exhaust stroke ?

I don't know. Equal to ambient? I'm more curious about the peak pressure in the interconnect passage.

Thanks for bringing up diesels. cRiPpLe_rOoStEr probably wants his thread back.

[cRiPpLe_rOoStEr]

That uncle of mine who had a Simca 8 traded it for.. guess what.. a front-engined Miura X8. Pics to come soon. It looks like a Mazda RX-7 from the 80s, but uses the same driveline of the Volkswagen Santana, which was known in the U.S. as Volkswagen Quantum (back here, only the Santana wagon was known as Quantum).