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Design and experimental analysis for EGR electronic control system of diesel engine

WU Jin-hua

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Abstract

The electronic control technology about EGR was researched and used in a TDI diesel engine in order to reduce NOx emission.According to operation characteristics and functions of EGR control system in diesel engine,80C196KC single chip was selected as EGR system control center,then the circuit of EGR system was designed and the control program was compiled.Based on the contrast analysis of diesel engine load tests,it is proved that NOx emission is reduced by 19.9%,CO and HC emission is increased a little,power and fuel economy characteristics of diesel engine with EGR system are similar to the original,and cool EGR can restrain the increase of PM as EGR technology is used in diesel engine.The design method about circuit and program for EGR system is applicable in practice and can make EGR system operate consecutively and credibly on the basis of optimum EGR rates when diesel engine operates under different operation conditions.

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What this paper is about

The electronic control technology about EGR was researched and used in a TDI diesel engine in order to reduce NOx emission.According to operation characteristics and functions of EGR control system in diesel engine,80C196KC single chip was selected as EGR system control center,then the circuit of EGR system was designed and the control program was compiled.Based on the contrast analysis of diesel engine load tests,it is proved that NOx emission is reduced by 19.9%,CO and HC emission is increased a little,power and fuel economy characteristics of diesel engine with EGR system are similar to the original,and cool EGR can restrain the increase of PM as EGR technology is used in diesel engine.The design method about circuit and program for EGR system is applicable in practice and can make EGR system operate consecutively and credibly on the basis of optimum EGR rates when diesel engine operates under different operation conditions.

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Available abstract

The electronic control technology about EGR was researched and used in a TDI diesel engine in order to reduce NOx emission.According to operation characteristics and functions of EGR control system in diesel engine,80C196KC single chip was selected as EGR system control center,then the circuit of EGR system was designed and the control program was compiled.Based on the contrast analysis of diesel engine load tests,it is proved that NOx emission is reduced by 19.9%,CO and HC emission is increased a little,power and fuel economy characteristics of diesel engine with EGR system are similar to the original,and cool EGR can restrain the increase of PM as EGR technology is used in diesel engine.The design method about circuit and program for EGR system is applicable in practice and can make EGR system operate consecutively and credibly on the basis of optimum EGR rates when diesel engine operates under different operation conditions.

Key concepts: Diesel engine, Automotive engineering, NOx, Diesel fuel, Common rail, Exhaust gas recirculation, Engineering, Engine control unit

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Design and experimental analysis for EGR electronic control system of diesel engine — Research Paper | ScholarLens