Patent ID: 8601802

Claim:
An exhaust gas purifying device that purifies exhaust gas emitted from an internal combustion engine, comprising: an exhaust manifold including a plurality of runners provided to exhaust ports of the internal combustion engine and a collector at which all of the runners merge; and a catalytic converter that is provided immediately downstream of the exhaust manifold, wherein the catalytic converter has an upstream catalyst that is housed on an upstream side, and a downstream catalyst that is housed downstream of the upstream catalyst, wherein the upstream catalyst has a carrier, an upstream first layer disposed on the carrier and containing Pd, an upstream second layer disposed on the upstream first layer and containing Rh, and an upstream third layer disposed on the upstream second layer and containing Pd, wherein the downstream catalyst has a carrier, a downstream first layer disposed on the carrier and containing Pd, and a downstream second layer disposed on the downstream first layer and containing Pt and Rh, and wherein the collector is in communication with the catalytic converter via, in order from upstream, a flow regulating path of a predetermined length that rectifies the exhaust gas and has a width that gradually narrows to a downstream side, where the length of the flow regulating path is greater than the width of the flow regulating path at its widest point, and a neck portion that is provided to the flow regulating path, wherein the flow regulating path is provided between the collector and the neck portion and is curved on a side thereof at the catalytic converter.