Woodcutter wrote:EGR: ... a part of the exhaust gas that is recycled for admission to (if I remember correctly) reduce the combustion temperature and thus produce less NOx.
I wonder if this is not noises that courrent
Logically, if we re-injects gas exch. They are cence be hotter than air from the air filter
the principle is a vicious circle (or stale if you want
:
like that recycles
The fact to recycle a portion of gas exch. limit the production of NOx, mainly by the fact that part of these gases
is of NOX, and that this NOX cannot become NOX and a half: nitrogen, once oxidized, cannot oxidize any more, whereas if the engine swallows "brand new" nitrogen, this "brand new nitrogen" "he can do it (oxidize)
but it can not be recycled when the engine is
partial loadBecause it is essential that swallows O2 enough to occupy all the fuel that made him drink (otherwise unburnt
)
But everything here has nothing to do with a decline of T ° of combustion, in contrast, partial load, it is preferable to increase the temp of combustion for better fuel burn
In any case, there must be full load of recycling
at least there is a load, the more can be recycled:
1) causing swallow N NOX already become so inconsequential (as mentioned above)
2) fuel is more apt to grab oxygen, if the engine does not swallow too much, there is less available to take nitrogen
That said, and here has nothing to do, no burning ° T is high, the more nitrogen happens to bind oxygen to produce NOX, but here is the T °
maximum performance Full Load:
maximum efficiency at part load, T ° does not rise too much, while at full load
(While the fuel is CENCE take all the oxygen) the temp rises so high that the nitrogen comes to poking fuel to oxygen (the Brigant)
to sum up :
partial load: recycling to reduce NOX, although some increases here the T °
at full load: delay in the injection, which mainly reduced the maximum T ° to reduce NOX (but necessarily increase the specific conso
)
they may also delay a little injection at partial loads, I do not know, must see the T ° in play
bolt