Welcome to HPMug2oMmNrOfxWQHLiEksa6s0hFu9Ox348d7QefarYlaFR5ArkhOwm3Da1pmxmxCtenj1+6luWD#r#n+EPn9L6Ce+9onqnMlT+i! Today is

HPMug2oMmNrOfxWQHLiEksa6s0hFu9Ox348d7QefarYlaFR5ArkhOwm3Da1pmxmxCtenj1+6luWD#r#n+EPn9L6Ce+9onqnMlT+i ›› 2017, Vol. 33 ›› Issue (5): 39-42.DOI: 10.3969/j.issn.1009-0479.2017.05.007

Previous Articles     Next Articles

On Malfunction Diagnosis and Removal of Diesel Engine's SCR System

LUChao   

  1. DepartmentofElectricalandMechanicalEngineering,WuxiOpenUniversity,WuxiJiangsu214011,China
  • Received:2017-05-16 Online:2017-12-19 Published:2017-12-19

Abstract: Taking the tail gas purifying system of diesel engine's selective catalytic reduction technology (SCR) as the research object,this paper studies the formation,working principles and ways of malfunction diagnosis of the SCR system produced by a company,which has met the National IV emission standard.Then it analyzes the main reasons for the malfunction as follows:disconnect;sensing elements breakdown;discharge temperature of sensing elements;metering pump breakdown;urea level breakdown;temperature sensing breakdown of urea tank.It finally puts forward a procedure formal function diagnosis and method of removing the malfunction.

Key words: SCR system, malfunction diagnosis, malfunctinon removal

CLC Number: