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Andrews, Gordon E.; Li, Hu; Wylie, James A.; Zhu, G.; Bell, Margaret; Tate, James (2005)
Publisher: Society of Automotive Engineers
Languages: English
Types: Part of book or chapter of book
The influence of ambient temperature on exhaust emissions for an instrumented Euro 1 SI car was determined for urban congested traffic conditions. In UK cities cold-starting vehicles directly into congested traffic conditions is a common occurrence that is not currently taken into account when modeling urban traffic pollution. In-vehicle emission samples were taken directly from the exhaust, upstream and downstream of the catalyst, using the bag sampling technique. The first bag was for the cold start emissions and approximately the first 1.1 km of travel. The following three bags were with a hotter catalyst. The cold start tests were conducted over a year, with ambient temperatures ranging from 2°C to 30°C. The results showed that CO emissions for the cold start were reduced by 70% downstream of the catalyst when the ambient temperature rose from 2°C to 30°C. The corresponding hydrocarbon emissions were reduced by 41% and NOx emissions were increased by 90%. The influence of ambient temperature was less when the catalyst was fully warmed up. The results showed that ambient temperature had a greater influence on cold start emission under traffic jam conditions than in previous work with real world driving closer to the ECE passenger car drive cycle.
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    • 1. Hans Peter and Christian Cozzarini: Emissions and Air Quality. SAE Reference book R-237.2000.
    • 2. J.Laurikko, L. Erlandsson and R.Arbrahamsson; Exhaust in Cold Ambient Conditions: Considerations for a European Test Procedure. SAE Paper 95923.
    • 3. J.Laurikko and P.Aakko: The Effect of Ambient Temperature on the Emissions of Some Nitrogen Compounds: A Comparative Study on Low-Medium and High Mileage Three-Way Catalyst Vehicles. SAE Paper 950933.
    • 4. M.D.Gurney and J.R.Allsup: Predictability of Emissions from In-Use Vehicles at Low-Ambient Temperature and Alternate Driving Cycle Based on Standard Tests. SAE Paper 890625.
    • 5. R.E.Larson: Vehicles Emissions Characteristics under Cold Ambient Condition. SAE Paper 890021.
    • 6. G.W.R.Taylor and S Stewart: Cold Start Impact on Vehicle Energy Use. SAE Paper 2001-01-0221.
    • 7. G.E.Andrews, G. Zhu, H Li, A Simpson, J.A.Wylie, M.Bell and J.Tate: The Effect of Ambient Temperature on Cold Start Urban Traffic Emissions for a Real World SI Car. SAE Paper 2004-01-2903.
    • 8. J.Laurikko and N.Nylund: Regulated and Unregulated Emissions from Catalyst Vehicles at Low Ambient Temperature. SAE Paper 930946.
    • 9. D.H.Jason and M.D.Checkel: Quantifying Vehicle Emission Factors for Various Ambient Conditions using an On-Road, Real-Time Emissions system. SAE Paper 2003-01-0301
    • 10. G.E.Andrews, J.R.Harris and A.Ounzain: Transient Heating and Emissions of an SI Engine during the Warm-up period. SAE Paper 880264.
    • 11. G.E.Andrews, J.R.Harris and A.Ounzain: SI Engine Warm-Up: Water and Lubricating Oil Temperature Influences. SAE Paper 892103.
    • 12. G.E.Andrews, J.R.Harris and A.Ounzain: The Role of Cooling Water and Lubricating Oil Temperature on Transient Emissions during SI Engine Warm-up. I.Mech.E. 1989.
    • 13. G.E.Andrews, J.R.Harris and A.Ounzain: Experimental Methods for Investigating the Transient Heating and Emissions of an SI Engine during the Warm-up Period. I.Mech.E. 1988.
    • 14. G.E.Andrews, A.Ounzain, A.D.Al-fawaz, M.Ghazhikhani and P.H.Dyke: Catalyst Performance during the Warm-up period. 2nd British-Italian conference in Engine
    • 15. G.E.Andrews, J.R.Harris and A.Ounzain: The Influence of External Heat Losses on the Transient SFC and Emissions during the Warm-up period of an SI Engine. IMechE 1990
    • 16. B.Piotr and M. Jerzy: Cold Start Emissions Investigation at Different Temperature Conditions. SAE Paper 980401.
    • 17. G.E.Andrews and F.M.Ahmad: The Composition of Spark Ignition Engine Steady State Particulate Emissions. SAE Paper 1999-01-1143.
    • 18. G.E.Andrews, Hu Li, J.Hall, A.A.Rahman and P.Mawson: The Influence of an Oil Recycler on Emissions with Oil Age for a Refuse Truck in Service testing. SAE Paper 2001-01-0623.
    • 19. G.E.Andrews, Hu Li, J.Hall, A.A.Rahman and P.Mawson: Impacts of an on Line Bypass Oil Recycler on Emissions with Oil Age for a Bus in Service testing. SAE Paper 2001-01-3677.
    • 20. G.G.Zhu: Engine and Exhaust System Warm-up, Emissions and Catalyst Temperature Control. PhD thesis, Dept. of Fuel and Energy, The University of Leeds, 1999.
    • 21. J.A.Wylie: Spark Ignition Engine Emissions during Cold Start under Real World Driving Conditions. MSc thesis. The University of Leeds, 2001.
    • 22. Automotive Test Drive Cycles for Emission Measurement and Real-World Emission levels - A Review. Journal of Automobile Engineering, Vol.216, No.D7. Institution of Mechanical Engineers. London, 2002
    • 23. Y.Ohyama: Mixture Formation during Cold Starting and Warm-up in Spark Ignition Engines. SAE Paper 960065.
    • 24. P.Bielaczyc and J.Merkisz: Euro III/Euro IV Emissions - A Study of Cold Start and Warm Up Phases with a SI Engine. SAE Paper 1999-01-1073.
    • 25. P.Bielaczyc and J.Merkisz: Exhaust Emission from Passenger Cars during Engine Cold Start and Warm-up. SAE Paper 970740.
    • 26. P.Bielaczyc, J.Merkisz and J.Pielecha: Exhaust Emissions from Diesel Engine during Cold Start in Ambient Temperature Conditions. Paper presented at 2000 FISITA World Automotive Congress~Automotive Innovation for the New Millennium. Seoul, Korea, 2000
    • 27. Spark Ignition Engine Emissions. Short course. Leeds University. 2003.
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