Quote:
Originally Posted by Heihetech
There are many posts talking about "misfire" caused by DCD. As I have said
before, this is not true misfire due to missed or abnormal burning.
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It doesn't matter. OBD II systems detect misfiring cylinders due to a lack of either fuel (which your device intentionally causes to happen) or spark. You can whine about how unfair this is to your invention all you want, but the fact of the matter is that you still have to work around a federally mandated computer control.
Quote:
Originally Posted by Heihetech
So, OBD-II should
better use other way to detect misfire, such as combustion pressure, or gas
expansion by knock sensor. Therefore, OBD-II software must be modified
accordingly, give the way to DCD operation.
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Oh, sure. Manufacturers should add thousands of dollars to the per unit production costs of their vehicles to add costly and unreliable methods of detecting misfiring cylinders, just so that your precious device can then be made to work without throwing codes and possibly putting said vehicles into limp-in mode.
Quote:
Originally Posted by Heihetech
We all know OBD-II is the law,
but the law is man-made, and could be revised as required. Detecting misfire
by mechanical irregularity has been out-dated, at least not so perfect.
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Do you even know exactly how misfires are detected? Or are you just talking out your rear end again?
And while we're at it again, explain how a completely deactivated cylinder (that's no passage of anything, let alone air at room temperature) will somehow suffer more of a temperature difference than a cylinder that is pumping room-temperature air without firing it? Oh, and please explain how the cylinder that is completely deactivated (remember, not pumping a thing) somehow wastes more energy than a cylinder that is pumping air from a low pressure source (the intake manifold) to a high pressure source (the exhaust manifold)?