【文章內(nèi)容簡介】 O E = 1 0 ~ 4 d e g 7 8 3 X 0 1 0 6 0 / 4 2 。 R a i l _ P = 1 2 0 0 , S O E = 1 0 ~ 4 d e gCO[g/kWh]0 . 00 . 40 . 81 . 21 . 62 . 02 . 4N OX [ g / k W h ]0 1 2 3 4 5 6 7Emission Calibration 21 Emission control strategy towardsEU4/5 RBCD/EVL | 169。 Robert Bosch GmbH 2022. 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 Management systems injection + bustion process air system exhaust aftertreatment Engine Emission performance 22 RBCD | 169。 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. Emission control strategy towardsEU4/5 Emission Solutions to Meet HD/MD CN4/5 Regulation 滿足國 4/5的重型車排放策略 23 RBCD/EVL | 21/10/2022 | 169。 Robert Bosch GmbH 2022. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, 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% ? Longdistance HD: SCR。 ? shortdistance mercial vehicle: EGR/PMCat. ? Unite States(US07): ? EGR+DPF ? Japan(JP05): ? EGR+DPF ? China: ? Emission Legislation reference from EU Emission control strategy towardsEU4/5 24 RBCD/EVL | 21/10/2022 | 169。 Robert Bosch GmbH 2022. 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: 30% ? PM reduction : 80% China III China IV CO (g/kWh) HC (g/kWh) NOx (g/kWh) 5 PM (g/kWh) Emission Limits in ESC cycle: Emission control strategy towardsEU4/5 26 Emission solution introduction 169。 Robert Bosch GmbH 2022. 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 對于重型柴油機滿足國 IV 排放標(biāo)準(zhǔn)，一般有兩條技術(shù)路線： ? 一是 SCR 路線，也稱歐洲路線，通過燃燒優(yōu)化使微粒排放滿足要求，再通過 SCR對 NOx 進行處理； ? 二是 EGR 路線，也稱美國路線，通過 EGR 降低 NOx 排放達到要求，再采取 DOC、 POC或 DPF 等微粒后處理技術(shù)降低微粒排放。但無論采用哪種技術(shù)路線，機內(nèi)凈化都是排放控制的核心技術(shù)，對于保證發(fā)動機的性能、減小對后處理的依賴、降低成本具有重要意義。 27 RBCD/EVL 169。 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. ESC Emission Limitations 0 1 2 3 4 5 6 7 8 9 10 11 NO x [g/kWh] [g/kWh] Quelle: K5/EVD Z w EGR wo EGR SCR PT EURO V EURO IV 0 0,05 0,02 0,1 0,15 PM EURO III US 07 EGR: E xhaust G as R ecirculation PT : P articulate T rap SCR : S elective C atalytic R eduction Remark: PT in case of relatively low engine power density Particulate Matter Catalyst sufficient for reduction 廢氣再循環(huán) 顆粒捕捉器 選擇性催化還原 Emission control strategy towardsEU4/5 28 RBCD/EVL | 21/10/2022 | 169。 Robert Bosch GmbH 2022. 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 constant, 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 ~6L) ? ~20% of diesel mercial vehicle Emission control strategy towardsEU4/5 29 Emission control strategy towardsEU4/5 RBCD/EVL | 169。 Robert Bosch GmbH 2022. 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 EGT (SCR) advantage: ? low cost disadvantage: ? higher fuel consumption preferred use: ? low mileage vehicles Dosing module Supply module with dosing control unit (DCU) AdBlue tank Engine control unit (ECU) AdBlue pipes ECU control line CAN EGR cooler EGR valve EGR pipe EGR advantage: ? lowest fuel consumption disadvantage: ? higher syst. cost preferred use: ? high mileage vehicles 30 Confidential | RBCD/EGTlih4wx | 2022222 | 169。 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. Diesel Systems SCR system overview DENOXTRONIC Training red colored = Bosch supplied grey colored = optional sensors 31 US Temp Sensor SCR technology introduction Internal | RBCD/EGT | 10/13/2022 | Pres09_154 | 169。 Robert Bosch GmbH 2022. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. N2 N2 O2 HC SCR DOC CO CO2 SM NOX/NH3 Sensor DS Temp Sensor NH3 NOx UREA NH3 NOx Why SCR? 32 SCR technology introduction Internal | RBCD/EGT | 10/13/2022 | Pres09_154 | 169。 Robert Bosch GmbH 2022. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of appli