On Fri, 23 Dec 2005 21:46:02 GMT, Johannes wrote:

Chris Bacon wrote:

Ian Stirling wrote:
Current car engines are about 25% at best efficient, so 75% of power goes
out the exhaust pipe wasted.

I thought most was lost through the radiator.

Strangely enough, cooling though the radiator is just as important as the
heating in the combustion for achieving high efficiency. You can only
extract mechanical energy between two temperatures; the larger the gap,
the more efficient.

Sadly however, on car, the radioator does notr cool the exhaust gasses.

So you are talking ********.

If te exgaust were dindensed in te raradiator, it woudl indeed enable a
more efficient engine to be produyced, but teh cat enbsures that the
exhaust temperetures are high enough to make this impossible