2.Composition and Structure
Emission catalytic converter system is mainly made up of three-way catalytic converter and oxygen sensor,as shown in Fig.4.13.And there is one oxygen sensor on the front and rear side of three-way catalytic converter respectively,namely,front oxygen sensor and rear oxygen sensor.
Fig.4.13 Emission Catalytic Converter System(https://www.daowen.com)
Fuel vapor emission control system consists of carbon canister and carbon canister purge solenoid as shown in Fig.4.14.
Fig.4.14 Fuel Vapor Control System
