Patent ID: 6293241
Filing Date: 2001-09-25
Classification: F01N,F02B,F02M,F23N,Y02T

Abstract:
An internal combustion engine with a combustion heater, comprising:an exhaust gas purifying catalyst provided in an exhaust passage of the internal combustion engine for purifying harmful gaseous components contained in exhaust gas;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; anda burnt gas passage controlling means for communicating at least one of said first burnt gas discharging means and said second burnt gas discharging means with a portion upstream of said exhaust gas purifying catalyst in said exhaust passage.