The engine (100) has a silencer (10) i.e. dual chamber silencer, comprising a structurally limited outer chamber (16) and silencer intake (11) that is connected with a flow channel (12) i.e. straight tube, such that the flow channel is connected to an outl...

A two cycle internal combustion engine cylinder having a piston chamber. The cylinder includes transfer ports; and an exhaust port divided into at least two sections. A first one of the sections has an aperture at the piston chamber with a top surface loca...

The muffler includes a sound-absorbing structure (1A, 1B) having a gas introduced from a fuel cell (100). The muffler includes an outlet (13) defined by the sound-absorbing structure for discharging a drain separated from the gas.