Implementation and Challenges of RDE with BSVI Norms

Transcription

1 ECT-2016 Emission Control Technology for Sustainable Growth November 9-10, 2016 India Habitat Centre, Lodhi Road, New Delhi, India Implementation and Challenges of RDE with BSVI Norms Kentaro Sugimoto NGK Technologies India Pvt. Ltd. Slide1

2 Introduction RDE PN testing results at EU (Diesel and Gasoline) RDE challenges in India Summary Slide2

3 Introduction RDE PN testing results at EU (Diesel and Gasoline) RDE challenges in India Summary Slide3

4 Legislation & After treatment system estimation in India Legislation Major city Nationwide Test cycle PC & LDV M & HDV A/T system Gasoline Diesel PC & LDV Diesel M & HDV BS4 BS3 NEDC ESC / ETC TWC BS4 DOC (+ Partial Filter) DOC (+ Partial Filter) SCR BS6 BS6 WHSC / WHTC / WNTE RDE monitor TWC + GPF (2023?-, for GDI engine) NSC + CSF* DOC + SDPF** +SCR RDE CF:?? DOC + CSF +SCR * Catalyzed Soot Filter ** SCR on DPF Slide4

5 RDE information in EU (for PC & LDV) Limits Euro 6b Euro 6d-TEMP Euro 6d Test procedure for pollutants NEDC ( WLTP) WLTP/RDE (NEDC) RDE* RDE Monitoring RDE Step 1 (CF 2,1 NOx ) RDE Step 2 (CF NOx; decrease to 1.0 until 2023 ) PN Limit NO x CI: / km PI, DI: / km 80 mg CI, PI, DI: / km CO 2 Limit 130 g/km (NEDC or WLTP) 95 g/km 75-68? g/km RDE monitor from 2016 RDE Step 1 (CF:2.1) from Sept RDE Step 2 (CF: ) from 2020 RDE Step 2 (CF:1) from 2023 Slide5

6 Introduction RDE PN testing results at EU (Diesel and Gasoline) RDE challenges in India Summary Slide6

7 EU after treatment system trend for diesel PC & LDV Emission Control Systems CSF system SCR on DPF system Serial DeNOx System (EU6b) DOC + CSF + SCR NSC + CSF CC CC UF DOC CC NSC DOC CSF CC CSF SCR/ ASC DOC + SCR on DPF + SCR CC CC UF DOC SCR on DPF SCR/ ASC RDE/EU6d DeNOx Systems NSC + CSF + SCR CC CC UF NSC DOC CSF SCR/ ASC NSC + SCR on DPF + SCR CC CC UF NSC DOC SCR on DPF SCR/ ASC Major system One of key technology for diesel after treatment for future tighter regulation is SCR on DPF Slide7

8 Pore Volume DPF material for SCR on DPF / Design concept SiC-DPF with High Porosity (HP) + Optimized Pore Distribution Material Pore Size Distribution pore Standard Material High Coating capability Sharp Pore Size material Low Pressure Drop High Filtration Efficiency Small Pore Size Diameter Large To achieve market requirement, special material is considered for SCR on DPF Slide8

9 RDE testing Comparison of different driving styles Vehicle information Diesel Turbo Direct Injection; 4cyl. 2,0 l EU6 Automatic Transmission Altitude : m Emission Control System SCR on DPF system (High Porosity DPF) Slide9

10 RDE testing Evaluation of RDE data with EMROAD and CLEAR Log (Particulate Number [#/km]) Regeneration Particulate Numbers [#/km] evaluated with EMROAD and CLEAR 1.0E x /km - EMROAD 3.5E E+11 - CLEAR 1.0E E E E E E E E+08 Normal, D-Mode, cold RDE #1 RDE Normal, #2 RDE Aggressive, #3 RDE Aggressive, #4 RDE Aggressive, #5 RDE #6 D-Mode, warm D-Mode, warm D-Mode, warm S-Mode, cold Aggressive, S-Mode, warm High Porosity SiC DPF fulfills requirements for PN emissions in RDE. Even by having an active DPF regeneration during Testing RDE limit can be achieved Slide10

11 EU after treatment system trend for gasoline PC EU CO 2 limit : 95g/km (2021) Gasoline DI engines (GDI) to reduce CO 2 emissions Further market share increase Source: GDI engine tend to high PN emission Higher engine load driving cycles / RDE higher PN emission? One of key technology for gasoline after treatment in EU is GPF Slide11

12 Material lineup for Non catalyzed and catalyzed type GPFs Material Cordierite Gasoline Particulate Filter Porosity % % TWC GPF incl. TWC System Layout Example TWC GPF GPF incl. TWC Micro Structure [ SEM ] Wall Thickness / Cell Density 200µm 200µm 5-8 mil / cpsi 8-12 mil / 300 cpsi Application Non catalyzed GPF Catalyzed GPF Tested system Slide12

13 Time [min], ratio [%] GPF Real driving emission evaluation Driving route Driving route (in Germany) Altitude : m Vehicle information Gasoline Direct Injection λ = 1 ; 4cyl 1,8 l direct + port fuel injection Close Coupled TWC EU5 Manual Transmission PN PEMS 102 min 34% 28% 38% Tested system TWC With GPF or Without GPF Highway [%] ca. 150 cm Non catalyzed type GPF was installed and RDE PN emission was measured by PEMS Slide13

14 GPF Real driving emission evaluation PN emission results 6.0 x /km Test vehicle GDI without GPF exceed RDE PN limit GPF shows high filtration efficiency under RDE condition Slide14

15 Introduction RDE PN testing results at EU (Diesel and Gasoline) RDE challenges in India Summary Slide15

16 How is the Indian RDE driving cycle? Heavy traffic Non-paved road Highly dynamic driving Comparison of India City Driving vs NEDC* NEDC Pune City Impact % <10km/hr 0% 32% Low temperature gas Ave. Accel. m/s High Torque, RPM = High Soot Average Speed Low temperature gas *: Case Study by Central Institute of Road Transport Pune, India Compare to EU, Indian RDE could be focused on low speed zone? Slide16

17 NOx Conversion (%) Low speed driving impact for after treatment system Diesel PC & LDV case Urban Rural Area Highway Uphill Driving NSC + SCR on NSC only NSC + SDPF (+SCR) SDPF (+SCR) DPF + SCR SCR on DPF + SCR NSC SDPF + SCR Majority? Temperature C NSC contribution is higher than EU? Slide17

18 RDE Challenges in India Challenges for Emission Comparing EU RDE to Indian RDE: NOx Requirement for NSC could be higher Due to complicated system, cooperation of engine operation and after treatment technology is necessary Challenges for Implementation of RDE How to decide RDE driving cycle Large variation of driving Driving ratio of Urban : Rural : Highway =? :? :? Tighter CF may come in effect (ex. 1.5?) Start from tighter level Slide18

19 Introduction RDE PN testing results at EU (Diesel and Gasoline) RDE challenges in India Summary Slide19

20 Summary In case of EU, filter technology (SCR on DPF, GPF) has possibility to meet RDE PN limit In case of RDE in India, DeNOx system could be complicated hence optimized engine operation and emission control systems are necessary OEM and supplier cooperation is required Slide20

21 ECT-2016 Emission Control Technology for Sustainable Growth November 9-10, 2016 Thank you for your attention! India Habitat Centre, Lodhi Road, New Delhi, India DIESEL PARTICULATE FILTER Implementation and Challenges of RDE with BSIV Norms HONEYCERAM Kentaro Sugimoto Deputy General Manager NGK Technologies India Pvt. Ltd. LARGE SIZE MONOLITH HONEYCOMB ECT Implementation and Challenges NGK of Technologies RDE with BSVI India Norms copyright / NGK Technologies India Pvt. Ltd. Kentaro Sugimoto Slide21