Emission Control System: Purpose
The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the engine (3 and 4). they 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 table below.
EMISSION CONTROL SYSTEM FUNCTION
| System | Abbreviation | Function | ||
|---|---|---|---|---|
| 1. Positive Crankcase Ventilation | PCV | Reduces HC | ||
| 2. Evaporative Emission Control | EVAP | Reduces Evaporated HC | ||
| 3. Three-Way Catalytic Converter | TWC | Reduces HC, CO And NOx | ||
| 4. Sequential Multiport Fuel Injection(1) | SFI | Injects A Precisely Timed, Optimum Amount Of Fuel For Reduced Exhaust Emissions | ||
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