This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Construction of Engine Emission Test Driving Cycle of City Transit Buses
Technical Paper
2015-01-2800
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The paper develops an engine emission test driving cycle of heavy duty city transit buses. A real-world emission test is performed by PEMS in Guangzhou, Foshan and Shenzhen which are the three big cities in the Pearl River delta in southern China. Sets of 107767 data were sampled, including vehicle speed, transmission gears, and exhaust emission, etc. Engine speed and torque were calculated based on the vehicle speed and transmission ratio, then normalized and standardized.
The methods of principle component analysis and cluster analysis were used for developing a driving cycle. The real-world continuous run mode was separated into1625 micro-trips, and 12 basic characteristic parameters were used to describe the characteristic of continuous run mode and micro-trip modes. Dimension of characteristic matrix of micro-trips was reduced by principle component analysis, and 1625 micro-trip modes were clustered into 5 categories. Finally, an engine driving cycle W1900 of city transit buses was constructed with the representative micro-trip modes. It's found that the conformity degrees of characteristic parameters of W1900 with that of total samples are more than 89% which shows W1900 has a good conformity with total samples.
Compared to ETC, W1900's average speed is 33% lower, average torque is 16% lower and average positive torque is 23% lower, but percentage of idle mode is 5.64 times of that of ETC. It means W1900 can better reflect the driving condition of transit buses in the Pearl River Delta in southern China than ETC.
Recommended Content
Technical Paper | The Analytical Basis of Automobile Coastdown Testing |
Technical Paper | The Diesel Engine for Truck Application |
Ground Vehicle Standard | Sound Level for Passenger Cars and Light Trucks |
Authors
Topic
Citation
Peng, M., Liu, X., and Lin, Q., "Construction of Engine Emission Test Driving Cycle of City Transit Buses," SAE Technical Paper 2015-01-2800, 2015, https://doi.org/10.4271/2015-01-2800.Also In
References
- Amirjamshidi , G. and Roorda , M. Development of simulated driving cycles for light, medium, and heavy duty trucks: Case of the Toronto Waterfront Area Transportation Research Part D: Transport and Environment 34 255 266 2015 10.1016/j.trd.2014.11.010
- Barnitt , R. and Gonder , J. Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption of a PHEV School Bus SAE Technical Paper 2011-01-0863 2011 10.4271/2011-01-0863
- National Standard of the People's Republic of China Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles (III, IV, V) May 2005
- Peng , M. , Lin , Q. , Liang , X. , Zhong , Z. et al. Comparison Between the Driving Mode of City Buses in Guangzhou City and the Urban Part of ETC Circle Automotive Engineering 2012 34 11 1043 1044 1048 10.3969/j.issn.1000-680X.2012.11.016
- Risam , G. , Singanamalli , A. , C , S. , and T , R. Development of Real World Driving Cycle for Vehicle Durability Evaluation SAE Technical Paper 2012-32-0097 2012 10.4271/2012-32-0097