Patent ID: 8196388

Claim:
A heating device for exhaust gas in an internal combustion engine, comprising: a tubular housing; a catalyst reactor equipped in the housing, filled with a combustion reforming catalyst in order to burn/reform the exhaust gas and having an introducing section with an igniter equipped in the front end of the catalyst reactor, and a first fuel preheating line connected to a fuel supply device from the outside of the housing to be supplied with fuels; an ignition part integrally formed at the rear end of the reactor so as to ignite a combustible gas partially mixed with the exhaust gas from the reactor and the exhaust gas flowing between the reactor and the housing; a nozzle mounted at the rear end of the ignition part to be provided with a fuel from a second fuel preheating line, spray the fuel to the exhaust gas and combust the exhaust gas secondarily; a mixer mounted at the rear end of the catalyst reactor for mixing the combustible gas by way of the combustion reforming catalyst and the exhaust gas flowing between the catalyst reactor and the housing; and a plurality of suction holes formed at the outer circumference of the ignition part, wherein the exhaust gas about the outer circumference of the ignition part flows through the suction holes.