| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently purify the unburned gas component desorpted from an adsorbent by guiding the unburned gas component desorpted from the adsorbent to the upstream with respect to a connection part with an intake air introduction passage in an intake passage to supply the same to a combustion heater through the intake air introduction passage for reburning. SOLUTION: The intake air taken in an intake air introduction passage 16 divided from an intake pipe 3 is guide to a combustion heater 15 during the cold of an internal combustion engine 1, and mixed with the evaporated fuel supplied from a fuel introduction passage 23 to be burned. Then the produced combustion gas is discharged to an intake pipe 3 through a combustion gas exhaust passage 17, whereby the fuel injected from a fuel injection valve can be effectively burned in the internal combustion engine 1. The exhaust gas of the internal combustion engine 1 flows to an exhaust purifying catalyst 11 through an adsorption cylinder 12 to adsorb the unburned HC by an adsorbent, on this occasin, when the adsorbent is in a condition that it can desorpt the unburned gas component, an open and close valve 29 is opened, and the desorpted unburned gas component is flowed back to the intake pipe 3 to be burned again in the combustion heater 15.</p> |
