Patent ID: 7444803

Claim:
An exhaust gas control apparatus for an engine, comprising: an absorption portion that includes a first exhaust passage and a second exhaust passage, the respective openings of which are located at different positions, and through which exhaust gas flows into the absorption portion; wherein the first exhaust passage is provided therein with a hydrocarbon-absorbent, which absorbs hydrocarbons present in the exhaust gas; a valve portion that includes a valve that opens and closes the second exhaust passage, thereby changing a mode where the exhaust gas flows; and a catalyst portion that includes a catalyst that purifies the exhaust gas, wherein the absorption portion, the valve portion, and the catalyst portion are independent of each other; the absorption portion, the valve portion, and the catalyst portion are connected to each other in series, and the first exhaust passage communicates with a space upstream of the second exhaust passage through an upstream-opening positioned upstream of the hydrocarbon-absorbent, and communicates with a space downstream of the second exhaust passage through a downstream-opening positioned downstream of the hydrocarbon-absorbent, when the valve is open, the exhaust gas flows from the valve through the second exhaust passage to the catalyst and a portion of the exhaust gas flows back from the downstream-opening through the first exhaust passage and the upstream-opening to the space upstream of the valve.