Emission Control Systems: Description and Operation

The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the engine ((3), (4) and (5)). to prevent the atmospheric release of blow-by gas-containing HC (1) and evaporated fuel containing HC being released from the fuel tank (2). The function of each system is shown in the image above.

Remark: * For inspection and repair of the MFI system, refer to Fuel Delivery and Air Induction.