Quote:
Originally Posted by cRiPpLe_rOoStEr
At first it seemed interesting, even though the NOx increase would be troublesome nowadays. Had the Ozone displaced some of the atmospheric Nitrogen at the intake of the engine, would've been better.
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The production of NOx and Soot/particulates are counter to each other. It is well known that an increase in Exhaust Gas Re-circulation (EGR) will reduce the temperature of the flame front in a compression ignition engine (Diesel), reducing the formation of NOx. However, as the fuel to oxygen ratio approaches 80 % (Lamda=0.8) there is an increase in the formation of particulates.
But, what if you could increase EGR to the point of reduction of NOx and forestall the formation of soot? Ozone provides a tool to do this.
The EGR mixture has poor reactivity but the addition of a small amount of ozone makes up for this resulting in more of the fuel being burned without an undue increase in NOx output.