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EGR fuel reforming is a reasonable way in after-treatment research to improve the cyclic instability due to heavy EGR and generate gaseous fuel through EGR loop for better fuel-air mixing. The CEGR can have two modes of operation- an oxidization mode, where the incomplete products of combustion are oxidized on a palladium/platinum-based catalyst to reduce the instabilities introduced with the application of EGR, and a reforming mode, where a small amount of diesel fuel is injected in the EGR stream and catalytically reformed on the catalyst in the rich combustor to generate gaseous fuels like hydrogen which can improve the overall combustion efficiency.
CEGR can benefit the stable control of low-temperature combustion mode with low emissions of NOx and soot besides stable EGR control. It may also have the potential to reduce the fuel penalty of diesel after-treatment system as well as EGR valve fouling.
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EGR Reforming on Engine Setup |
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