| 主权项 |
1. An exhaust emission control device for an internal combustion engine comprising
a plurality of reed valve chambers respectively including reed valves, and provided to a cylinder head portion of a multi-cylinder internal combustion engine, the reed valve chambers being formed by covering recessed portions provided to the cylinder head portion respectively with reed valve covers, the reed valve chambers having upstream sides which communicate with the atmosphere via a secondary air supply pipe; and downstream sides which communicate with exhaust ports via communication passages provided to the cylinder head portion, and the reed valve chambers having upstream sides which communicate with the atmosphere via a secondary air supply pipe; and downstream sides which communicate with exhaust ports via communication passages provided to the cylinder head portion, and the reed valves being interposed between the upstream sides and the downstream sides of the reed valve chambers, and the reed valves being opened by exhaust pulsation pressure, wherein in the cylinder head portion, the plurality of reed valve chambers are disposed with spaces therebetween, and the plurality of reed valve covers communicate individually with, and are formed integrally with, the secondary air supply pipe, and the reed valve covers are connected in series by the secondary air supply pipe. |
