Saddle-riding type vehicle

摘要

A saddle-riding type vehicle (100) according to the present invention includes: an internal combustion engine (1) causing combustion at an air/fuel ratio smaller than a stoichiometric air/fuel ratio, a first catalyst (2A) provided in an exhaust path to which combustion gas is discharged from the internal combustion engine (1); a second catalyst (2B) which is provided in the exhaust path downstream with respect to the first catalyst (2A); and a secondary air introduction device (3A) for introducing secondary air to a portion of the exhaust path, the portion (7a') being between the first catalyst (2A) and the second catalyst (2B). The first catalyst (2A) and the second catalyst (2B) each contain a precious metal component containing at least one of Pt, Rh, Pd, and Au. The first catalyst (2A) further contains a zeolite carrier and Co or Fe being carried on the zeolite carrier in an amount which is greater than an ion-exchangeable amount thereof.