Exhaust Gas Recirculation in On·board Diagnostic System
نویسندگان
چکیده
Introduce electronic control exhaust gas recirculation EGR system in the passenger cars and light duty vehicles was made because of fuel direct injectionengines. In this engines temperature combustion process is a higher then other type engine and in this connections NO, emissions were higher to. Simultaneously was appearing problems to electronic exhaust gas recirculation control in connection with introduce on-board diagnostic system. Mainly target of this system is controlexhaust aftertreatment cars equipment. In principle the exhaust gas recirculation systems are not required in vehicle fulfilling OBD II regulations but it is effective system reducing NOx emissionand is applied in more and more number of models. This paper has presented regulations, technical solution and control solution exhaust gas recirculation in modem cars equipped with OBDsystem.
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