An exhaust emission control device for an internal combustion engine includes multiple reed valve chambers (7) which include reed valves (7a), and which are provided on cylinder head portions (40L, 40R) of a multi-cylinder internal combustion engine (4). T...

A reed valve (11) includes a vibration suppressing member (15a, 18a) for suppressing transmission of vibration, caused due to opening and closing operations of a reed piece (17), to a fixed mounting portion of an engine part to which the reed valve is moun...

In an assist gas fuel injection mechanism for 2-cycle internal combustion engine comprising a chamber (21) communicated to a combustion chamber (19) through a communicating passage (30), a rotary valve (40) provided in the communicating passage (30) for co...