초록 ▼

In an internal combustion engine with a combustion heater for elevating a temperature of an engine related element, an object of the present invention is to provide a technique that may effectively performs temperature elevation of an exhaust gas purifying device. In order to attain this object, acc

In an internal combustion engine with a combustion heater for elevating a temperature of an engine related element, an object of the present invention is to provide a technique that may effectively performs temperature elevation of an exhaust gas purifying device. In order to attain this object, according to the present invention, the internal combustion engine having an exhaust gas purifying catalyst provided in an exhaust passage of the internal combustion engine, and a combustion heater comprising a combustion chamber 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, characterized by including a first burnt gas discharging portion for discharging from the combustion heater the burnt gas which has passed through the heat exhcange portion, a second burnt gas discharging portion for discharging from the combustion heater the burnt gas which has not yet passed through the heat exchange portion, and a burnt gas passage controlling unit for supplying at least one of burnt gas discharged by the first burnt gas discharging portion and burnt gas discharged by the second burnt gas discharging portion to the exhaust gas purifying catalyst.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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 combus

[ What is claimed is:] [1.]1. 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.