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Experimental Research on Emission Characteristics of Extended-Range Electric Transit Bus
Technical Paper
2017-01-2394
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The range-extended electric transit bus (REEbus) equipped with the auxiliary power unit (APU) using high efficient diesel engine as power source can reduce the cost of power battery and is an ideal transitional powertrain architecture to the pure electric drive. Based on chassis tests of a 12m long REEbus, fuel consumption and emission characteristics during Charge-Sustaining (CS) stage effected by temperature of the REEbus are researched. The APU of REEbus starts to work around just one point with best efficiency and lower emission when the state of charge (SOC) is too low and stop when the SOC is high, which aims to lower fuel consumption. As a result, even during CS stage, the fuel consumption of REEbus is only 22.84 L/100km. Also almost all emissions decrease dramatically and the NOx emission is only 0.68g/km, but the ultrafine-particle number increases owing to better combustion. For the engine of REEbus there are colder engine start, severer acceleration and deceleration compared to of the traditional powered buses, so during start for too much fuel injection and acceleration for lacking in inlet fresh air as well as shutdown processes of APU, there are obvious overshoots of the APU speed accompanied with sharp increases of CO, THC emissions, which is more obvious during engine start on colder condition. What’s more, on warm condition the catalyst of SCR lights off much earlier than on cold condition, contributing to significant decrease of NOx emission. So it turns that on warm condition, CO, THC, NOx emissions and the ultrafine-particle mass reduce respectively by 62.6%, 25.3%, 68.1% and 41.0% compared to on cold condition, but the ultrafine-particle number increases by 58.7%.
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Xu, N., Lou, D., Liu, J., Tan, P. et al., "Experimental Research on Emission Characteristics of Extended-Range Electric Transit Bus," SAE Technical Paper 2017-01-2394, 2017, https://doi.org/10.4271/2017-01-2394.Data Sets - Support Documents
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References
- Suggestions on the promotion of new energy vehicles issued by Ministry of Transport of the People's Republic of China
- Rodrigues , M. , King , S. , Scott , D. , and Wang , D. Advanced Energy Management Strategies for Range Extended Electric Vehicle SAE Technical Paper 2015-26-0121 2015 10.4271/2015-26-0121
- Chen , S.G. , Li , M.L. , Xu , D. et al A study on the Influence of Start/Stop of Hybrid Electric Bus Engine on Its Emissions Based on PEMS Automotive Engineering 3 32 198 202 2010
- SAE International Surface Vehicle Recommended Practice Recommended Practice for Measuring Fuel Economy and Emissions of Hybrid-Electric and Conventional Heavy-Duty Vehicles SAE Standard J2711 Sep. 2009
- GB/T 19754- 2015 Test methods for energy consumption of heavy-duty hybrid electric vehicles
- GB/T 19691- 201X Limits and measurement methods for exhaust pollutants from compression ignition and gas fuelled positive ignition engines of vehicles (CHINA VI)
- Chen , H. , Zuo , C. , and Cheng , X. A Study of Parameter Matching and Experiment of Powertrain for an Extended-Range Electric Vehicle SAE Technical Paper 2012-01-2221 2012 10.4271/2012-01-2221
- Chambon , P. , Deter , D. , Irick , D. , and Smith , D. PHEV Cold Start Emissions Management SAE Int. J. Alt. Power 2 2 252 260 2013 10.4271/2013-01-0358
- Kim , C. , Paratore , M. , Gonze , E. , Solbrig , C. et al. Electrically Heated Catalysts for Cold-Start Emissions in Diesel Aftertreatment SAE Technical Paper 2012-01-1092 2012 10.4271/2012-01-1092
- Ng , H. , Anderson , J. , Duoba , M. , and Larsen , R. Engine Start Characteristics of Two Hybrid Electric Vehicles (HEVs) - Honda Insight and Toyota Prius SAE Technical Paper 2001-01-2492 2001 10.4271/2001-01-2492
- Tan , P.Q , Lou , D.M. , Hu , Z.Y. Nucleation mode particles from a diesel engine with biodiesel fuel Journal of Engineering Thermophysics 31 7 1231 1234 2010
- AS 2077-1982 METHODS OF TEST FOR FUEL CONSUMPTION OF PASSENGER CARS, THEIR DERIVATIVES AND MULTI-PURPOSE PASSENGER CARS
- Hu , M.Y. , Yang , F.Y. , Ouyang , M.G. et al A research on the Distributed Control System for Extended-range Electric Vehicle Automotive Engineering 34 3 197 202 2012
- Wang , Y.K. , Yu , X.M. , Liang , J.G. et al Control strategy of electronic controlled diesel engine during cold start process Journal of Jilin University (Engineering and Technology Edition) 1 38 27 31 2008
- Boger , T. , Rose , D. , Tilgner , I. , and Heibel , A. Regeneration Strategies for an Enhanced Thermal Management of Oxide Diesel Particulate Filters SAE Int. J. Fuels Lubr. 1 1 162 172 2009 10.4271/2008-01-0328