ubia lezing brussel 28 november 2019 - aecc · renault scenic –c‐segment 1700 kg drivetrain...
TRANSCRIPT
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Diesel is future proof
UBIA lezing Brussel 28 November 2019
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Exhaust emissions control technologies for original equipment, retrofit and aftermarket for all new cars, commercial vehicles, motorcycles, and non‐road mobile machinery
Association for Emissions Control by Catalyst (AECC AISBL)AECC members : European Emissions Control companies
AECC is # 78711786419‐61 in EU Transparency Register and has consultative status with the UN Economic and Social Council (ECOSOC)
2UBIA – 28 November 2019
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Real‐world NOx emissions gap is issue of pre‐RDE diesels
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Source: TRUE initiative
UBIA – 28 November 2019
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EU Real‐driving Emissions legislation
Low NOx emission diesel cars: a reality
AECC ultra‐low emissions diesel demonstrator
Gasoline PN emissions
Content
4UBIA – 28 November 2019
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Not To Exceed limit (NTE) = Euro 6 limit x Conformity Factor (CF)
CF defined for NOx and PN
CF applies to urban part and total trip
CF in final step accounts for PEMS error margin (Portable Emissions Measurement Systems)
Two stages added to Euro 6 legislation: Euro 6d‐TEMP and Euro 6d
EU‐RDE legislation to close the gap between lab and real‐world emissions
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NT: New TypesAll: All Types
NOx CF2 = 1.0 + 0.43 error margin
UBIA – 28 November 2019
Today
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PEMS equipment used to measure emissions on the road
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Applies to New Types as of 1 January 2019 and All New Vehicles as of 1 September 2019
Mandatory tests
Type 1: RDE
Type 1: WLTP
Optional tests
Type 4: evaporative emissions
Type 6: low ambient temperature
Some examples of process flow in next 2 slides
In‐Service Conformity and Market Surveillance are key
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Defined in 4th legislative EU‐RDE package ‐ Regulation (EU) 2018/1832
UBIA – 28 November 2019
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In‐Service Conformity and Market Surveillance are key
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Defined in 4th legislative EU‐RDE package
Source: Z. Kregar, “Update on EU Air Quality and vehicle emissions policies”, EIONET meeting on environment and transport, 2018, Copenhagen
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In‐Service Conformity and Market Surveillance are key
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Defined in 4th legislative EU‐RDE package
Source: Z. Kregar, “Update on EU Air Quality and vehicle emissions policies”, EIONET meeting on environment and transport, 2018, Copenhagen
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EU Real‐driving Emissions legislation
Low NOx emission diesel cars: a reality
AECC ultra‐low emissions diesel demonstrator
Gasoline PN emissions
Content
10UBIA – 28 November 2019
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pre‐RDE vehicles
On‐road emissions of Euro 6d(‐TEMP) cars are well within standards
RDE has significantly improved diesel NOx emissions
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Source: ACEA/JAMA PEMS data consulted 19 November 2019
UBIA – 28 November 2019
Source: Handbook of Emissions Factors 4.1, UBA press release 11 September 2019
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RDE has significantly improved diesel NOx emissions
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Source: ADAC EcotestSource: Green NCAP
Trend is confirmed by 3rd party testing
Source: Auto Motor und Sport
Source: Emissions Analytics
RDE benefit
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UBIA – 28 November 2019
Light‐duty diesel emissions control technology evolution
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Source: BMW
Source: VW
Source: Hyundai
Source: Daimler
Source: VW
Lean NOx Trap(LNT)
Diesel Particulate
Filter(DPF)
Diesel Oxidation Catalyst (DOC)
Selective Catalytic Reduction
(SCR)
Introduction of individual deNOxtechnologies for Euro 6a/b
Combination of deNOxtechnologies for Euro 6d‐TEMP
Further integration for Euro 6d
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EU Real‐driving Emissions legislation
Low NOx emission diesel cars: a reality
AECC ultra‐low emissions diesel demonstrator
Gasoline PN emissions
Content
14UBIA – 28 November 2019
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Robust NOx control over wide range of driving conditions
Low speed/loade.g. city driving
High speed/loade.g. motorway driving
Transientse.g. overtaking
AECC ultra‐low NOx emissions diesel demonstrator
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More details: J. Demuynck, et al.; “Integrated Diesel System Achieving Ultra‐Low Urban and Motorway NOx Emissions on the Road”, 40th International Vienna Motor Symposium, 2019 https://www.aecc.eu/wp‐content/uploads/2019/04/190516‐AECC‐IAV‐IPA‐Integrated‐Diesel‐System‐achieving‐Ultra‐Low‐NOx‐on‐the‐road‐Vienna‐Symposium.pdf
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Vehicle Renault Scenic – C‐segment 1700 kg
Drivetrain Manual gearbox, 6‐speed 48 Volt mild‐hybrid (belt‐driven, P0)
Engine 1.5l, 4‐cylinder, 2‐valve EGR: uncooled HP and cooled LP
Euro 6b type‐approval (LNT + DPF)
Vehicle and powertrain characteristics
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Emissions controls to cover wide range of driving conditions
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EGR: Exhaust Gas RecirculationHP/LP: High/Low pressurecc: close‐coupledLNT: Lean NOx trapSCR: Selective Catalytic ReductionDPF: Diesel Particulate FilterSDPF: SCR on DPFuf: underfloorASC: Ammonia Slip Catalyst
Engine‐out Tailpipe
LNT + dual‐SCR system
Supported by 48V mild‐hybrid
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Also on a renewable fuel which offers reduced CO2 emissions on lifecycle basis
Robust NOx control achieved
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City driving: LNT and close coupled SCR+SDPF Motorway driving: underfloor SCR required to secure robust emissions control
All aftertreatment components contribute to NOx control
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Urban RDE Motorway RDE
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80% improvement due to LNT regeneration stabilisation and active thermal management Near‐zero emissions in the city after the cold‐start phase
Robust NOx control in the city directly after cold‐start
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Transport for London cycle
80% improvement
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More videos available on YouTube (AECC eu):https://www.youtube.com/channel/UCbPS9op5ztLqrv6zlMH_IcQ
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PN of all tests has order of magnitude between 109 and 1010 #/km
PN and PM controlled by SDPF under all driving conditions
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sub‐23nm PN (10nm CPC)
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Remains below 50 mg/km on WLTC and RDE Increases on TfL due to impact of thermal management
(optimisation was outside programme scope)
CO emission well within standards on WLTC and RDE
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THC+NOx remains below 50 mg/km on WLTC and RDE Increases on TfL due to impact of thermal management
(optimisation was outside programme scope)
THC emission well within standards on WLTC and RDE
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Bosch [1]: DOC + dual‐SCR
FEV [2]: DOC + dual‐SCR
Continental [3]: eDOC + dual‐SCR
Other approaches are available to achieve low NOx
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1. A. Kufferath, et al.; “EU6d – Analysis of Boundary Conditions and Evaluation of the Impact on Emissions using the Example of the Advanced Diesel Powertrain”, 40th Vienna Motorsymposium, 20192. M. Schönen, et al.; “White Eco Diesel Powertrain with Pre‐Turbine Exhaust Aftertreatment and Mild‐Hybrid Concept for lowest NOx Emission under Urban Driving Condition”, 40th Vienna Motorsymposium, 20193. G. Avolio, et al.; “Super Clean Electrified Diesel: Towards Real NOx Emissions below 35 mg/km”, 27th Aachen Colloquium, 2018
pre‐turbine components
UBIA – 28 November 2019
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Diesel achieves similar NOx emissions as gasoline
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Euro 6d(‐TEMP) diesel expectedto have improved engine‐out & dual‐SCR
UBIA – 28 November 2019
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EU Real‐driving Emissions legislation
Low NOx emission diesel cars: a reality
AECC ultra‐low emissions diesel demonstrator
Gasoline PN emissions
Content
28UBIA – 28 November 2019
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On‐road emissions of Euro 6d(‐TEMP) cars are well within standards
RDE has significantly improved GDI PN emissions
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Source: ‐ ACEA/JAMA Euro 6d(‐TEMP)
PEMS data consulted 19 November 2019
‐ pre‐RDE emissions factors fromB. Giechaskiel, Int. J. Environ. Res. Public Health, 2018
UBIA – 28 November 2019
pre‐RDE vehicles
Source: Emissions Analytics
Trend is confirmed by 3rd party testing
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Light‐duty gasoline emissions control technology evolution
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TWC
GPF
Three‐Way Catalyst (TWC)
Source: Audi
Source: Volvo
Source: VW
Source: PSA
TWC
Gasoline Particulate
Filter(GPF)
TWC
Source: Opel
2x TWC
GPF
Single Three‐Way Catalyst for Euro 6a/b
Introduction of Gasoline Particulate Filter on cars with direct injection and integration with Three‐Way Catalyst for Euro 6d(‐TEMP)
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RDE requirements have ensured better control of NOx & PN emissions under most EU driving conditions on both diesel and gasoline vehicles –these Euro 6d(‐TEMP) cars are on the road today
AECC’s diesel demo car shows that diesel NOx emissions can be kept at a very low level in a consistent way, over a wide range of driving conditions
This is achieved by combining existing catalyst technologies with improved engine and aftertreatment control functions supported by hybrid technology.
Conclusions
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Diesel Information Hub
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https://dieselinformation.aecc.eu
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Real‐world NOx emissions gap is issue of pre‐RDE diesels
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THANK YOU !www.aecc.eudieselinformation.aecc.eu
@AECC_euAECC (Association for Emissions Control by Catalyst)@aeccbrusselsAECC eu