Patent ID: 6497224
Filing Date: 2002-12-24
Classification: F01N,F02B,F02M,F23N,Y02T

Abstract:
An internal combustion engine with a combustion heater, comprising:a combustion heater including a combustion chamber that is independent of the internal combustion engine and a heat exchange portion for transmitting to an engine related element heat held by burnt gas that has been burnt in said combustion chamber; a first burnt gas discharging means for discharging from said combustion heater the burnt gas which has passed through said heat exchange portion; a second burnt gas discharging means for discharging from said combustion heater the burnt gas that has not yet passed through said heat exchange portion or that has passed through a part of said heat exchange portion; an intake air introducing passage for introducing air for combustion from an intake passage of the internal combustion engine to said combustion heater; a first burnt gas passage for communicating said first burnt gas discharging means with a joint portion downstream of said intake air introducing passage in the intake passage a second burnt gas passage for communicating said burnt gas discharged from said second burnt gas discharging means with a portion downstream of said first burnt gas passage in the intake passage or a portion upstream of an exhaust gas purifying catalyst in an exhaust passage; and a burnt gas passage controlling means for controlling of a flow of gas in said second burnt gas passage.