Patent ID: 8640447

Claim:
An exhaust emission control device for an internal combustion engine, comprising: a catalytic converter arranged in an exhaust passage of the internal combustion engine, the catalytic converter being configured to purify exhaust from the internal combustion engine, the catalytic converter comprising: an upstream catalytic converter; and a downstream catalytic converter arranged on a downstream side of the upstream catalytic converter, the upstream catalytic converter comprising: a first support; and a first catalyst supported on the first support, the first catalyst containing Al 2 O 3 , Pd, and an oxygen storage component that has a function of storing and releasing oxygen, the first catalyst comprising: a first lower layer catalyst provided on the first support, Pd in the first lower layer catalyst being supported only on the oxygen storage component contained in the first catalyst; and a first upper layer catalyst provided on the first lower layer catalyst, Pd in the first upper layer catalyst being supported on each of the oxygen storage component and Al 2 O 3 contained in the first catalyst.