柴油发动机介绍及其排放标定.ppt

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1、1,个人信息：,孙则强 老家：湖北孝感出生日期：1979.101998.092005.07 吉林大学汽车工程学院动力机械及工程2005.072010.06 江苏无锡 博世汽车柴油系统股份有限公司 柴油机共轨系统国三/国四排放、性能标定 2010.06.072039.10 一汽-大众汽车有限公司家庭情况：已婚 女儿20个月,2,EGT introduction,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distr

2、ibution,as well as in the event of applications for industrial property rights.,Diesel Systems,EGT introduction,Technical Solutions to meetFuture Emissions,3,Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event

3、of applications for industrial property rights.,Diesel Systems,Table of Content,Basic introductionEmission Solutions to Meet HD/MD CN4/5 RegulationEmission Solutions to Meet PC/LD vehicles CN4/5 Regulation,4,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation

4、,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,Abbreviation,Basic introduction,5,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights even in the event of industrial property rights.We reserve all rights of disposal such

5、as copying and passing on to third parties.,Diesel Systems,Comparison of Emission Tests,Basic introduction,6,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights even in the event of industrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Die

6、sel Systems,Speed/Load Areaof Emission Tests,Emission control strategy towardsEU4/5,7,Passenger Transport 9 Persons,Emission Legislation Introduction,RBCD/EVL|06/16/2006|Robert Bosch GmbH reserves all rights even in the event of industrial property rights.We reserve all rights of disposal such as co

7、pying and passing on to third parties.,China III/IV:Vehicle Classes,Goods Transport,I,II,III,Passenger Cars:M1*,PC/Light Duty Vehicles:M1*,HD-Busses with GVW 3500kg:M2,Heavy Duty Vehicles,Busses with GVW 3500kg:M1*,M2,M3;N2,N3,N1,M1*,M1*,N2,M3,M1*,1305 kg,1305 kg,1760 kg,1760 kg,LD Classes,Classific

8、ation according toReference weight(RW),GB 18352.3,Light Duty Trucks:N1,GB 18352.3,GB 18352.3(alternatively GB 17691-2005,but NDRC requests GB18352.3),GB 18352.3,GB 17691-2005,2,5,3,5,5,0,12,0,Gross Vehicle weight(t),I,II,III,N3,In Red:Differences to China IIIn Blue:Differences to Euro III,IV,9 Perso

9、ns 6 Persons,GB 18352.3:chassis certificationGB 17691-2005:engine certification,M2,1)no.of persons incl.driver,Light-Duty Certification(MNEDC),Heavy-Duty Certification(ESC,ETC,ELR),参考重量=空车+100kg,总重（标重）：与 养路费和罚款相关,8,Common rail system on a 4-cylinder engine,Basic introduction,9,Pressure comparison of

10、 EDC-systems,Comparison of injection systems,bar,min-1,200016001200 800 400 0,Injection pressure at the nozzle,CR,UIS,VP44,1000 2000 3000 4000,Engine speed,Injection pressure,Basic introduction,10,Future demands on diesel injection systems,Injection characteristic,High pressure injectionTolerance re

11、duction,Basic introduction,11,Comparison gasoline Diesel,Basic introduction,12,燃烧系统对比,Gasoline TSI engine,Diesel engine(Passenger Car),13,Emission Legislation Introduction,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights even in the event of industrial property rights.We reserve all rights o

12、f disposal such as copying and passing on to third parties.,Diesel Systems,ESC Cycle for HD Engines(13 mode)(EU/China III),idle,25,50,75,Power,Speed,A,B,C,30%,50%,Maximum,X,X,X,1,2,7,5,6,9,11,13,12,10,3,4,8,14,Emission Legislation Introduction,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights

13、 even in the event of industrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Diesel Systems,HD-Test Cycle ESC,ETC(EU/China III,IV),15,Emission Legislation Introduction,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights even in the event of

14、 industrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Diesel Systems,HD-Test Cycle ETC(EU/China(III with aftreatreatment),IV,V),16,Emission legislation,Department|4/30/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal

15、,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,ESC and ETC test points,Example for ETC test points:8L Euro4 engine,17,Emission Legislation Introduction,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights eve

16、n in the event of industrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Diesel Systems,HD-Test Cycle ELR(Euro/China III,IV),18,Emission Legislation Introduction,Internal|RBCD/EVL1|Robert Bosch GmbH reserves all rights even in the event of indus

17、trial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Diesel Systems,Modified New European Driving Cycle(Euro/China III,IV),Urban Cycle4 X 195 Sec,Extra-Urban Cycle 1 X 400 Sec,19,Emission Calibration,20,RBCD/EVL|12/24/2007|Robert Bosch GmbH reserve

18、s all rights even in the event of industrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Trade-off on Emissions Points,Emission Calibration,21,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regard

19、ing any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,Engine Emission performance,22,RBCD|Robert Bosch GmbH reserves all rights even in the event of industrial property rights.We reserve all rights of di

20、sposal such as copying and passing on to third parties.,Emission control strategy towardsEU4/5,Emission Solutions to Meet HD/MD CN4/5 Regulation满足国4/5的重型车排放策略,23,RBCD/EVL|21/10/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,

21、as well as in the event of applications for industrial property rights.,Mainstream Strategy for meet the EU4/5(HD/MD),Euro V:SCR 80%Long-distance HD:SCR;short-distance commercial vehicle:EGR/PM-Cat.Unite States(US07):EGR+DPFJapan(JP05):EGR+DPFChina:Emission Legislation reference from EU,Emission con

22、trol strategy towardsEU4/5,24,RBCD/EVL|21/10/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,ESC Emission Limitations,From Euro3 to Euro4 NOx reduction:3

23、0%PM reduction:80%,Emission Limits in ESC cycle:,?,Emission control strategy towardsEU4/5,25,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications f

24、or industrial property rights.,Diesel Systems,Emission Legislation(HD):EU,USA,Japan,26,Emission solution introduction,Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property

25、rights.,Diesel Systems,对于重型柴油机满足国IV 排放标准，一般有两条技术路线：,一是SCR 路线，也称欧洲路线，通过燃烧优化使微粒排放满足要求，再通过SCR对NOx 进行处理；二是EGR 路线，也称美国路线，通过EGR 降低NOx 排放达到要求，再采取DOC、POC或DPF 等微粒后处理技术降低微粒排放。但无论采用哪种技术路线，机内净化都是排放控制的核心技术，对于保证发动机的性能、减小对后处理的依赖、降低成本具有重要意义。,27,RBCD/EVL Robert Bosch GmbH reserves all rights even in the event of ind

26、ustrial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,ESC Emission Limitations,Remark:PT in case of relatively low engine power density Particulate Matter Catalyst sufficient for reduction,废气再循环,颗粒捕捉器,选择性催化还原,Emission control strategy towardsEU4/5

27、,28,RBCD/EVL|21/10/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Potential market for Euro4 EGR strategy in China,SCR:Cost of SCR system is almost cons

28、tant,whatever the engine displacement.Benefit in Fuel consumption is more impressive with increase of engine displacement.EGR:Cost of catalyst POC/DOC=f(displacement)Potential market for Euro4 EGR strategy in China MD vehicle(displacement about 2.5L6L)20%of diesel commercial vehicle,Emission control

29、 strategy towardsEU4/5,29,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,Diesel Systems,EGT(SC

30、R),advantage:low costdisadvantage:higher fuel consumptionpreferred use:low mileage vehicles,EGR,advantage:lowest fuel consumptiondisadvantage:higher syst.costpreferred use:high mileage vehicles,30,Confidential|RBCD/EGT-lih4wx|2010-2-22|Robert Bosch GmbH reserves all rights even in the event of indus

31、trial property rights.We reserve all rights of disposal such as copying and passing on to third parties.,Diesel Systems,SCR system overview,DENOXTRONIC 2.2 Training,31,US Temp Sensor,SCR technology introduction,Internal|RBCD/EGT|10/13/2009|Pres09_154|Robert Bosch GmbH 2008.All rights reserved,also r

32、egarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,SCR,DOC,SM,NOX/NH3 Sensor,DS Temp Sensor,Why SCR?,32,SCR technology introduction,Internal|RBCD/EGT|10/13/2009|Pres09_154|Robert Bosch GmbH 2008.All rights rese

33、rved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,DS Temp Sensor,US Temp Sensor,SCR,DOC,STEP1:Thermal Hydrolysis CO(NH2)2+H2O 2NH3+CO2,STEP 2:SCR Reaction 4NH3+4NO+O2-4N2+6H20(A)4NH3+4NO2-4N2+6H20+O

34、2(B),NOX/NH3 Sensor,SM,33,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,Mainstream Euro4 concepts for MD/HD Vehicles,Emission contro

35、l strategy towardsEU4/5,34,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,SCR technology to CN

36、4/5,PM reduced to CN4/5 by internal combustion optimizationHigh injection pressureAdvanced injection timingNOx reduced by SCR catalyst with ammonia dosingConversion rate 6570%for CN4,open loop controlConversion rate 8090%for CN5,close loop controlRequirement:SCR Catalyst DeNOx AdBlue Dosing systemAd

37、Blue infrastructure,35,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,SCR overview of chemical

38、 process,Hydrolysis catalyst(NH2)2CO+H2O 2NH3+CO2,NOx in exhaust gas,Urea water solution(32.5%urea),Ammonia(NH3),NOx,SCR catalyst NO+NO2+2NH3 2N2+3H2O,NOx,Cleaned exhaust gas,36,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exp

39、loitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,EGR with PM Cat.to CN4/5,PM catalyst,NOx reduced to CN4/5 by EGREGR rate 15%for CN4,open loop control EGR rate 25%for CN5,close loop controlPM reduced by PM catalyst(POC

40、)Conversion rate 50%Open systemRequirement:EGR system POC and DOCLow sulfur fuelAdvanced TC for CN5Oil consumption 0.1g/kWh,37,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well

41、 as in the event of applications for industrial property rights.,Diesel Systems,EGR engine layout,Example:4 cylinder,DC-motor EGR,38,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,a

42、s well as in the event of applications for industrial property rights.,Diesel Systems,Composition of Diesel Particulates,Example:HD diesel engine,US FTP transient cycle,1998,39,RBCD/EVL|21/10/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editin

43、g,distribution,as well as in the event of applications for industrial property rights.,DOC+POC,Emission control strategy towardsEU4/5,Source:Umicore,Info.from Umicore,NO2/Soot 2540 will show good CRT effect.,40,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserve

44、d,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,The effect of DOC,Effect on Total NOx EmissionsNo more than a few percent,SOF Removal Considered same as HC Performance,Conversion of CO

45、 and HC in Diesel Oxidation Catalyst,Concentration of NO2 with Diesel Oxidation Catalyst,41,Emission control strategy towardsEU4/5,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications fo

46、r industrial property rights.,Diesel Systems,The effect of DOC,Particulate Matter Performance,DOC Impact on PM Emissions with Sulfur Containing Fuels,PM with an Oxidation Catalyst,42,RBCD/EVL|21/10/2008|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,

47、editing,distribution,as well as in the event of applications for industrial property rights.,Open System for Continuous Soot Oxidation(POC),Emission control strategy towardsEU4/5,Principle:,Deposition of particles on porous fibre fleece,Layout:corrugated foil with small blades,Mechanism:1)Soot Depos

48、ition2)Soot Oxidation C+2NO2 CO2+2NO,0,20,40,60,80,Conversion Rate,%,0,20,40,60,80,PM,mg/kWh,Conversion Rate:,Source:MTZ 6/2005,43,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications fo

49、r industrial property rights.,Diesel Systems,Filter Configuration:gas flow pattern,Wall-Flow and Flow-Through Substrates:Flow Pattern,Wall-Flow and Flow-Through Substrates:Inlet Cell Pattern,open and plugged cells at their inlet(as well as outlet)face,Emission control strategy towardsEU4/5,44,EGT in

50、troduction,RBCD/EVL|Robert Bosch GmbH 2008.All rights reserved,also regarding any disposal,exploitation,reproduction,editing,distribution,as well as in the event of applications for industrial property rights.,Diesel Systems,DPF filter mechanism,Adjacent channels closed off at each end by ceramic pl