bosch柴油机obd技术及控制策略

1、OBD Technology and Control Strategy for DieselVehiclesRBCD/EAP博世汽车柴油系统Xu XiaosongDiesel Systems1RBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robertch GmbH reservess evenhe event of industrial property rights We reserve all rights of disal such as copying and passing on to third partiesTable of Content 目录Di

2、esel OBD system in EU3 stage国3阶段的柴油车OBD系统sible failures in diesel system and its OBD technology柴油系统可能的故障及其相关的EGR 废气再循环Air flow sensor 空气流量传感器技术Rail prere sensor 轨压传感器OBD control strategyOBD相关的控制策略In-service conformity test 在用车符合性检查Inspection&Maenance (I&M) test 检查/保养检测Relevant tests overview in Euro

3、pe 欧洲相关的检查制度体系Development of diesel OBD in EU4 stage and diesel prospect国4阶段柴油车OBD的发展，及柴油车的前景Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert2ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesTable of C

4、ontent 目录Diesel OBD system in EU3 stage国3阶段的柴油车OBD系统sible failures in diesel system and its OBD technology柴油系统可能的故障及其相关的EGR 废气再循环Air flow sensor 空气流量传感器技术Rail prere sensor 轨压传感器OBD control strategyOBD相关的控制策略In-service conformity test 在用车符合性检查Inspection&Maenance (I&M) test 检查/保养检测Relevant tests overv

5、iew in Europe 欧洲相关的检查制度体系Development of diesel OBD in EU4 stage and diesel prospect国4阶段柴油车OBD的发展，及柴油车的前景Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert3ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partie

6、sSystem Overview of EU3 stage, common rail diesel system国三阶段，共轨柴油系统Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert4ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesThe monitored systems被系统OBD requires

7、 the emiscontrol systems to be monitored, the mostimportant systems are air system and fuel injection system:OBD要求监测排放控制设备。最重要的排放控制是燃油喷射系统和空气系统Injection system燃油喷射系统Air system空气系统Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert5ch GmbH reservess evenhe event of industrial property rights W

8、e reserve allrights of disal such as copying and passing on to third partiesCommo Ra lRail PrereSensorMetering UnitHigh pre re pumpFilterInjectorFuelECUSensorOverview of diagnostic system系统概况MILDiesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert6ch GmbH reservess evenhe event of industrial pr

9、operty rights We reserve allrights of disal such as copying and passing on to third parties仪发ECU自诊断Watch dog检查EEPROM 检查管理系统(DSM)标准仪接口故障内存管理MIL 控制故障确认功能性.合理性检查控制器偏差电器连接的执行其EGR 阀油量控制单元喷油器传感器.转速传感器轨压传感器空气质量流量Table of Content 目录Diesel OBD system in EU3 stage国3阶段的柴油车OBD系统sible failures in diesel system a

10、nd its OBD technology柴油系统可能的故障及其相关的EGR 废气再循环Air flow sensor 空气流量传感器技术Rail prere sensor 轨压传感器OBD control strategyOBD相关的控制策略In-service conformity test 在用车符合性检查Inspection&Maenance (I&M) test 检查/保养检测Relevant tests overview in Europe 欧洲相关的检查制度体系Development of diesel OBD in EU4 stage and diesel prospect国4

11、阶段柴油车OBD的发展，及柴油车的前景Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert7ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesEGR废气再循环EGR valve is driven by vacuum air. EGR system is close loop controlled by ai

12、r mass metering.EGR阀由空气负压驱动。整个EGR系统根据新鲜空气进气量闭环控制。sible failures in EGR valve and its driving system:EGR阀及其驱动系统可能的故障为：Coking at EGR valve, sot its blockedEGR阀结焦被卡住Air leakagehe driving system 驱动系统管路的泄漏Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert8ch GmbH reservess evenhe event of industr

13、ial property rights We reserve allrights of disal such as copying and passing on to third partiesEGR 废气再循环The failure of EGR valve or its driving system is detected by monitoringthe close loop controlernor deviation. If the valve is blocked at someition, at some working pos the actualake air mass wo

14、uld not beable to follow the setpo. Theernor deviation at this time would bevery big and its identified as an error.EGR阀及其驱动系统的故障由闭环控制系统的控制偏差来阀被卡死在某个位置，则必定在某些工况点上实际进气量不能。此时系统控制偏差会很，并将被判定为故障。如果EGR设定值Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert9ch GmbH reservess evenhe event of industria

15、l property rights We reserve allrights of disal such as copying and passing on to third partiesEGR 废气再循环EGR valve blocked at openitionEGR阀卡死在全开位置Error detected发现故障Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert10ch GmbH reservess evenhe event of industrial property rights We reserve allri

16、ghts of disal such as copying and passing on to third partiesAir flow sensor 空气流量传感器Air flow sensor is used to measure the fresh air mass the to close loop control the EGR. 空气流量传感器用来测量新鲜空气进气量，以闭环控制 EGR系统。sible failure of AFS:空气流量传感器可能的故障为：Drift due to pollution of dust, oil, or water 因为油，水，或者颗粒物的污染造

17、成的漂移Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert11ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesAir flow sensor空气流量传感器While overrun, when the EGR valve is closed and no boost pre air flow can be

18、 calculated using engine speed and displacement.re, the不喷油，车辆滑行倒拖的状态下。EGR阀在此状态下应处于关闭在发状态，并且没有增压压力。此时的新鲜空气流量可以用发动转速和排量来计算。The calculated air mass is then compared with the measured value to monitor the AFS drift.计算出来的空气流量与实测的空气流量进行比较，如果差值过大，则检测到空气流量传感器漂移的故障。Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/1

19、1/2006 | Robert12ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesAir flow sensor drift detection in overrun空气流量传感器漂移的监测Error detected发现故障Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert13ch GmbH reser

20、vess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third parties(kg/h)Rail preRail prere sensor 轨压传感器re sensor measures the fuel prerehe common rail, forthe close loop control of the fuel prere and the injection control.轨压传感器用于测量共轨管中的燃油压力，

21、以用来闭环控制燃油压力，并进行喷射控制。sible failure of RDS：轨压传感器可能的错误：Drift due to pollution 传感器的漂移Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert14ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesCommon RailPrere Sens

22、orMetering UnitHigh pre re pumpFilterInjectorFuelECUSensorRail prere sensor 轨压传感器The drift of the rail prere sensor is monitoredhe start se, whenthe engine speed is zero, ignition key is at “on”ition and no cring.OBD系统在发监测轨压漂移。During this time, no rail pre“on”状态，但转速仍为零时，起动之前，开关re is build up and the

23、 rail prere sensoroutput should equal to the atmospheric prere.此时轨压尚未建立，应等于外界大气压力，或约等于零。OBD system measure the rail prere sensor outputhis conditionand compare it with the atmospheric prethen a error will be detection.re, if the deviation is too high,OBD系统将此时测得的轨压与大气压力进行比较，如果差值过大，则认为检测到故障。Diesel Sys

24、temsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert15ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesRail prere sensor drift detection轨压传感器的漂移Error detected发现故障Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | R

25、obert16ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesEngine speed (rpm)Rrea(ilbpar)Table of Content 目录Diesel OBD system in EU3 stage国3阶段的柴油车OBD系统sible failures in diesel system and its OBD technology柴油系统可能的故障

26、及其相关的EGR 废气再循环Air flow sensor 空气流量传感器技术Rail prere sensor 轨压传感器OBD control strategyOBD相关的控制策略In-service conformity test 在用车符合性检查Inspection&Maenance (I&M) test 检查/保养检测Relevant tests overview in Europe 欧洲相关的检查制度体系Development of diesel OBD in EU4 stage and diesel prospect国4阶段柴油车OBD的发展，及柴油车的前景Diesel Syst

27、emsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert17ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesIn-service conformity test 在用车符合性检查Pure目的:Ensure the function of the emiscontrol during normal useful life of veh

28、icles确保排放控制系统在车辆生命周期内运行正常Regulations in Europe 欧洲中的实行办法check of 3 vehicles taken from the field从实际在用车辆中抽取3辆车vehicles aged betn 6 month / 15000 km and 5 years / 80000 km被检车辆已被使用了6个月/15000公里到5年/80000公里之间vehicles must be properly maained and have no indications of abuse, tering or major repair被检车辆必须保养良

29、好，不存在曾被，改动，和说明书规定之外的大修before the test vehicles have to be checked for: filters, drive belts, fluids, hoses, wiring, fuel, compres, ignition在进试之前，被检车辆必须进行下述检查：空滤，所有驱动皮带，所有液面，线束，燃油回路，发压缩和点火Report of OBD memory contentsOBD系统中的故障代码Test检测: - Emiss (type I test) 排放（一型实验）- OBD system including emistests wi

30、th faulty or deteriorated componentsOBD 系统 包括模拟失效模式后用被检车辆进行排放实验If test results are negative: Manufacturer must submit a plan of remedial measures to a conformity with the requirements for all vehicleshe field (Recall !)re the如果检查结果不合格：车辆制造商必须提交一份补救措施计划，来确保所有已售出在用车的符合性Diesel SystemsRBCD/EAP1- Xu Xiao

31、song | 23/11/2006 | Robert18ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesIn-service conformity test在用车符合性检查The in service conformitynot strictly performed in Europe, because thefollowing difficulty在用车符合性检查在欧

32、洲实际并未严格执行，是因为存在以下现实的:High difficulty to get a proper car. Taxi not proper because of unusual ensively use, normal private cars are not able to get freely.不容易得到合适的被检车辆。作为公共用途目的的车辆，如出租车往往使用强度过高；而车则不能免费的随意得到。The influence of environment conditions are too high. Different fuel quality and air quality ma

33、y need to unexpected deterioration.被检使用过程中驾驶环境的影响对检测结果将有很大的影响。不同的油品，空气质量或者是环境温度，可能导致不同的难以确定。老化结果。而对被检车辆的使用环境Difficult to determine the sus of the test car. Different driving behaviour andmaenance are not so easy to identify, ban lead to very different results.难以确定车辆的维修保养，和使用情况。如果维修保养没有做好，甚至车主的驾驶不同，都

34、会导致不同的老化结果，以影响到检测结果。Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert19ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesInspection&Maenance (I&M) test检查/保养(I&M)检测Inspection&Maenance (I&M)performed to ev

35、ery in-service carhe following manner 检查&保养(I&M)检测对实际在mandatorily every two years用车辆每两年一次的强制例行检查，规程如下:Visual inspection of vehicle对被检车的人工检查Check functionality of MIL (ignition on, then MIL on, off)检查故障灯是否工作正常Check readiness of all supported readiness groups检查就绪状态是否全部就绪Read Diagnostic Trouble Codes (

36、DTC) by Mode $03通过通用模式$03读故障代码If all above ies are o.k. the check is over and vehicle passed如果以上检查项目全部合格，则通过检查If readiness is not achieved for all supported groups, a spel sootmeasuremens to be performed as alternative如果就绪状态没有全部就绪，则不读故障代码，而进行一个烟度的检测作为替代Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/20

37、06 | Robert20ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesDiesel Inspection&Maenance (I&M) test in Germany在德国柴油车的(I&M)检查流程开关开,故障灯亮?否是否发怠速能建立通信?否替代测试是烟度测量通过?故障灯灭?否就绪状态全部就绪?否是是是是否模式$03读到故障代码?人工检查通过？No是Diesel S

38、ystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert21ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third parties检测完成车辆通过通用OBD仪故障灯工作正常检测完成车辆不通过Prout ofresult检测未完成车辆不通过人工检查Relevant tests overview in Europe欧洲相关的检查制度体系I&M test

39、ingI&M 检查Every 2 years每2年一次AUEOBDvehicleLife time of vehicle车辆期registration 车辆首次登记3 years 三年首检Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert22ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesOn-Board

40、-Diagnosis - continously under real world driving conditions (OBD) - 在车辆的实际使用中持续不断的进行检测All vehicleshe field with OBD所有带OBD的在道行驶的车辆In-service conformity test(up to 5 years / 80.000 km for EU III)在用车符合性检查（对最多到5年/80000公里）only limited sle of vehicle types chosen by authority (not strictly performed)各车型只

41、有有限的样本被权力机关到（未严格执行）AUEOBDvehicleTable of Content 目录Diesel OBD system in EU3 stage国3阶段的柴油车OBD系统sible failures in diesel system and its OBD technology柴油系统可能的故障及其相关的EGR 废气再循环Air flow sensor 空气流量传感器技术Rail prere sensor 轨压传感器OBD control strategyOBD相关的控制策略In-service conformity test 在用车符合性检查Inspection&Maena

42、nce (I&M) test 检查/保养检测Relevant tests overview in Europe 欧洲相关的检查制度体系Development of diesel OBD in EU4 stage and diesel prospect国4阶段柴油车OBD的发展，及柴油车的前景Diesel SystemsRBCD/EAP1- Xu Xiaosong | 23/11/2006 | Robert23ch GmbH reservess evenhe event of industrial property rights We reserve allrights of disal such as copying and passing on to third partiesDevelopment of die