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Exhaust Gas Recirculation Control System of Diesel Engine

Ting Chen

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Abstract

To reduce NOx emission of a turbocharged diesel engine,an electronically controlled check valve EGR system was devised to realize Exhaust Gas Recirculation.The scheme and EGR valve were elaborated.The control strategies of the engine's steady and transient conditions and the intelligent PID theory were studied.The test was carried out and its results showed that EGR system can achieve EGR ratio from 0～16% and help reducing NOx emission significantly to meet EuroⅢ emission regulation.

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What this paper is about

To reduce NOx emission of a turbocharged diesel engine,an electronically controlled check valve EGR system was devised to realize Exhaust Gas Recirculation.The scheme and EGR valve were elaborated.The control strategies of the engine's steady and transient conditions and the intelligent PID theory were studied.The test was carried out and its results showed that EGR system can achieve EGR ratio from 0～16% and help reducing NOx emission significantly to meet EuroⅢ emission regulation.

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Available abstract

To reduce NOx emission of a turbocharged diesel engine,an electronically controlled check valve EGR system was devised to realize Exhaust Gas Recirculation.The scheme and EGR valve were elaborated.The control strategies of the engine's steady and transient conditions and the intelligent PID theory were studied.The test was carried out and its results showed that EGR system can achieve EGR ratio from 0～16% and help reducing NOx emission significantly to meet EuroⅢ emission regulation.

Key concepts: NOx, Turbocharger, Exhaust gas recirculation, Diesel engine, Automotive engineering, Diesel fuel, Common rail, Exhaust gas

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