Fuel reforming systems comprised of fuel reformers, diesel particulate filters, air pumps, and fuel pumps to prevent carbons from being attached to or make carbons difficult to be attached to inner portions of purification systems of exhaust gases of diesel engines, sold as a unit; Fuel reforming systems comprised of fuel reformers, diesel particulate filters, air pumps, and fuel pumps to prevent carbons from being attached to or make carbons difficult to be attached to inner portions of puri...