Malcom Forbes writes:
>The history of gasoline engines is the history of trying to run higher
>compression ratios, at higher RPM, at greater spark advances without PING!
He missed out the use of less fuel - at Rover we had an engine that would
quite happily run at an AFR of around 19:1 until the advent of the catalyst
which forced the engine to be run at stoichiometry! (around 14:1).
I.e. the wonderfully "green" catalyst causes engines to be less efficient!!
(They do however have other advantages specifically in the reduction of NOx)
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Andy Ashworth
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