Fuel injection plugs

Greg Hermann bearbvd at sni.net
Fri Apr 30 14:04:23 GMT 1999


>Howard Wilkinson wrote:
>
>>     The most reasonable way to control engine power output is by
>> gearing so that RPM is controlled by load.  A continuously variable
>> transmission system could allow an engine to operate at full throttle
>> all the time except at idle when it would need to be throttled.
>> Allowing the engine to always operate at WOT would greatly increase
>> efficiency.           H.W.
>
>    Ok, I know this isnt right.  If we had continously variable transmissions,
>we would be running them at peak torque not at wot.  VE is greatest at peak
>torque, the reason we rev engines higher to acheive high horsepower is to
>combat
>inefficient gearing.  At wot, there is significantly reduced ve and not enough
>time to get good mixture and combustion, therefore lower torque.  The reason
>this is an asset is because it produces more torque per unit time, ie power.
>With a continuously variable transmission we could run the engine all day long
>at peak torque and get double or triple the gas mileage, more power, and
>reduced
>wear.  Again, im just a student so tell me where i goofed but I have discussed
>this with others before and feel somehat confident that this is right.

You are mostly correct here, James.

You would want the engine to operate somewhere close to its torque peak for
best efficiency (light throttle openings) and then speed up to its power
peak for WOT, so as to get best power.

Greg
>
>James Ballenger





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