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Home >> Isuzu >> 1998 >> Rodeo S 2WD L4-2.2L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Description of On-Board Diagnostics >> System Operation >> Exhaust Gas Recirculation (EGR) System >> EGR Purpose
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EGR Purpose


The exhaust gas recirculation (EGR) system is used to reduce emission levels of oxides of nitrogen (NOx). NOx emission levels are caused by a high combustion temperature. The EGR system lowers the NOx emission levels by decreasing the combustion temperature.

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