ALTROZ SERVICE MANUAL

1.5L REVOTORQ ENGINE 80 E. EXHAUST GAS RECIRCULATION SYSTEM (EGR) EGR System Schematic Layout Description The Exhaust Gas Recirculation (EGR) system is designed to reduce the amount of Oxides of Nitrogen (NOx) created by engine during high combustion temperatures. NOx is formed in high concentration whenever combustion temperature exceeds the specified limit. In EGR system a part of exhaust gas from the exhaust manifold is made to mix with the fresh air going into the engine. This is done in part load and part speed conditions thus reducing the amount of harmful pollutant (NO X ) by reducing the peak combustion temperature. The EGR quantity and its duration is controlled by ECU instantaneously based on environmental and engine conditions. The EGR system of the vehicle is controlled by the Engine EMS ECU. The EGR System consists of the following components 1. ECU 2. EGR Valve 3. EVRV