Cylindrical air cleaner for internal combustion engine

A cylindrical air cleaner for an internal combustion engine arranged in an intake air passage of the internal combustion engine, the cylindrical air cleaner comprising:

• a cylindrical housing including a circumferential wall having an inlet, a top wall having an outlet, and a bottom wall opposed to the top wall;
• and
• a tubular filter element accommodated in the housing, wherein
• the housing comprises a case including the bottom wall and a cap including the top wall, the cap being coupled to the case in a removable manner,
• the case includes a planar adsorbent filter to adsorb evaporated fuel of the internal combustion engine,
• the adsorbent filter includes a basal end portion fixed to an inner surface of the bottom wall,
• the adsorbent filter is located at an inner side of the filter element and extends in an axial direction of the filter element, and
• an inner surface of the filter element is spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air to reach the outlet without passing through the adsorbent filter.