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Originally Posted by abently
the sole (most significant) contributor to improved fuel efficiency. We can get into semantics about maybe thermo efficiency, combustion pressures, harmonics and tuned intakes/exhausts but many of these changes have little effect in say a 200 RPM band in the low region anyway.
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200 RPMs is pretty low... most ICEs have a hard time even producing enough power to overcome pumping losses at 200 RPMs.
My bad ... I made the assumption you were using the term Sole in the same way as in a 'Sole Proprietorship'.
Thanks for clarifying ... based on the above it seems when you use the term ... you have your own personal deviation from the standard means ... you seem to mean only ( most significant ) ... significant being subjective as you choose to ignore the other contributors that are effecting things as 'semantics'... thanks for clarifying.
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Originally Posted by abently
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Originally Posted by iamian
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Originally Posted by abently
Air mass intake must be increased to maintain power (torque) output,
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Power can be increased or maintained in other ways |
of course power can be increased in other ways such as with more fuel, lol. |
Glad you see the error of your previous statement.
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Originally Posted by abently
More Ignition timing in a modern engine will not improve power or fuel consumption measurably.
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Incorrect.
We know the effect these things have on combustion because it can be measured... if it were not a measurable difference OEMs would not spend the engineering time and production costs to include it.
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Originally Posted by abently
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Originally Posted by iamian
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Originally Posted by abently
to thereby stop the RPM's from dropping when going into 'Lean-burn.'
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As posted previously ... there are very good engineering reasons to want the RPMs to be lower when in 'Lean-Burn'... The Lower RPMs during Lean Burn is desired and intentionally designed in. |
I'm not rehashing the last point either, I understand why lower RPM's are desired during lean burn, so save your breath. |
Glad you see the error of your previous statement.