Exhaust System: Description and Operation

Exhaust System Description

The exhaust system consists of an exhaust manifold with a Warm Up Three-Way Catalytic converter (WU-TWC), exhaust No.1 pipe with a Three-Way Catalytic converter (TWC), exhaust No.2 pipe, a muffler, a gasket, etc. The WU-TWC and TWC are emission control devices which are added to the exhaust to lower the levels of Hydrocarbon (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx) pollutants in the exhaust gas. A large capacity sub-muffler is combined with the exhaust pipe No.2 for reducing booming noises at low-mid engine speeds. The adoption of a dual muffler produces low exhaust resistance and low back pressure, improves engine power and keeps exhaust noise low.