Quote:
Originally Posted by Ingen
Let me see if i can break dpwn a few of these.
The engine pulls in an amount of air corresponding to the volume of the cylinders and the speed of rotation. The ecu simply stops adding fuel.
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As the engine works as a positive displacement piston compressor during this type of operation, that makes sense to me. I have some mechanical inclination (I work as a nuclear power plant operator - but I am still in training and thus a noob). Since it is naturally aspirated, the engine will draw whatever volume the piston displacement will demand, correct?
Quote:
Originally Posted by Ingen
It will increase the wear on the clutch because you cannot engage a clutch without SOME slippage. Just dropping into neutral causes less because you are not re engaging.
It also increases transmission wear because the transmission is being operated under load, when it would not be if you brake in neutral.
Clutch wear will increase, brake wear will decrease. Churches are hard to change, brakes are not. That said, I usually downshift and use the brake pedal. These cars are made for this and frankly unless you are a bonehead with your rev matching I think you will do just fine for tens of thousands of miles. You cause more clutch wear slipping it in reverse than this will do in a week. Don't worry about it.
Source: engineer.
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So as far as engine braking goes - clutch wear is entirely from changing gears and not from the act of engine braking itself. This is what I was thinking, it makes the most sense. I'm also not worried at all about slightly increased wear from changing gears a couple more times than normal.
As far as transmission wear - i.e. "transmission operated under load" - is this significantly different than wear + load experienced during normal driving? Because if it is pretty much the same, again I don't think I would be that worried. There will ALWAYS be wear, it is EXCESSIVE wear that I want to avoid. These transmissions were designed for a certain amount of regular loading, if engine braking doesn't exceed this loading then I don't see why I should be worried about it.