Quote:
Originally Posted by t vago
Riiiight. You're trying to sell us on a gadget that intentionally throws a vehicle into limp-in mode by cutting fuel to 1/2 the available cylinders, without describing how exactly the fuel savings is supposed to occur, other than by some nebulous "heat transfer" that would actually put the engine at risk of developing premature wear. You further try to convince us that a true variable displacement system somehow uses more energy to work than your DCD, even though your DCD will actually force the engine to pump more air through it for a given work output than with either a traditional engine or a true variable displacement engine.
It would seem to me that if it were as easy as you claim to reduce fuel usage simply by turning off fuel delivery to 1/2 the cylinders in an engine, that we at Ecomodder would have done so by now. I seem to recall one or more of the other posters in this very thread have themselves experimented with shutting off fuel to 1/2 the cylinders.
Your method of passing emission testing leaves a lot to be desired. There is no way that your system could get CARB approval.
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How do you know "limp-in mode by cutting fuel to 1/2 the available cylinders"?
You designed something like this? or you have got used to turn 50% cylinders
off by TCD that makes vehicle into limp-in mode ?
I NEVER SAY "a true variable displacement system somehow uses more
energy to work than your DCD". That's your original statement. What I said
is TCD will save less fuel than what DCD could save, and part of TCD's fuel
savings will be lost due to certain reason. The smaller saving is still a positive
number, not a nagative number as you argued.
true variable displacement system? Please don't forget DCD controlled engine
is a better true variable displacement system than TCD controlled engine.
passing emission testing problem? Just switch DCD off, everything will go back
to the original. Then no more passing emission testing problem.
turning off fuel delivery to 1/2 the cylinders in an engine? VERY BAD IDEA
ONCE DCD HAS INVENTED. DCD has integrated such function, but DCD
seems never have a need to go to that dead point. The smart guys will
try advenced DCD BEFORE going to try your entery-level skill.