This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
On-board Measurements of City Buses with Hybrid Electric Powertrain, Conventional Diesel and LPG Engines
Technical Paper
2009-01-2719
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
On-board measurements of fuel consumption and vehicle exhaust emissions of NOx, HC, CO, CO2, and PM are being conducted for three types of commercially available city buses in Guangzhou, China. The selected vehicles for this test include a diesel bus with Eaton hybrid electric powertrain, a conventional diesel bus with automated mechanical transmission (AMT), and a LPG powered city bus with manual transmission (MT). All of the tested vehicles were instrumented with on-board measurements. Horiba OBS-2200 was used for measuring NOx, HC, and CO emissions; ELPI (Electrical Low Pressure Impactor) was used for PM measurement. The vehicles were tested at Hainan National Proving Ground in southern China.
Test data of fuel consumption and exhaust emissions were analyzed. The city bus with Eaton hybrid electric powertrain demonstrated more than 27% fuel consumption reduction over the conventional diesel powered bus, and over 68% over the LPG bus. The Eaton hybrid bus also showed 13% NOx and 35% HC reductions compared with the conventional diesel powered bus and 29% NOx and 99% HC reductions over the LPG bus when the buses are operated with air conditioning in an official China City Bus Cycle. The Eaton hybrid bus also showed 27% PM reduction compared with conventional diesel power bus; however, the PM emission level of Eaton hybrid bus was higher than the LPG powered bus.
Recommended Content
Technical Paper | Transit Bus Fuel Economy Test |
Technical Paper | On-road Testing and Characterization of Fuel Economy of Light-Duty Vehicles |
Aerospace Standard | Design Considerations for Enclosed Turboshaft Engine Test Cells |
Authors
Topic
Citation
Hu, H., Zou, Z., and Yang, H., "On-board Measurements of City Buses with Hybrid Electric Powertrain, Conventional Diesel and LPG Engines," SAE Technical Paper 2009-01-2719, 2009, https://doi.org/10.4271/2009-01-2719.Also In
References
- “Vehicle Emission Control In China” Vehicle Emission Control Center, Ministry of Environmental Protection, PR China 2007
- China State Information Center. www.sic.gov.cn
- Wang B. H. et al “Simulation Of City Bus Performance Based On Actual Urban Driving Cycle In China” International Journal of Automotive Technology 9 4 501 507 2008
- Chandler K. Walkowicz K. “King County Metro Transit Hybrid Articulated Buses: Interim Evaluation Results” NREL (National Renewable Energy Laboratory) Technical Report TP-540-39742 April 2006
- Barnitt Robb A. “In-Use Performance Comparison of Hybrid Electric, CNG, and Diesel Buses at New York City Transit” SAE paper 2008-01-1556
- 2005 “Heavy-Duty Hybrid Electric Automotive Energy Consumption Test Methods” National Standard of People’ss Republic of China
- Nellums Richard. et al “Class 4 Hybrid Electric Truck for Pick Up and Delivery Applications” SAE Paper 2003-01-3368
- Zou Zhanjiang Dave Scott Beaty Kevin O’Keefe Michael Hendricks Terry Rehn Robert Weissner Steve Sharma VK “A New Composite Drive Cycle for Heavy-Duty Hybrid Electric Class 4-6 Vehicles” SAE Journal paper 2004-01-1052
- Horiba OBS 2200. www.Horiba.com
- DEKATI ELPI™ Electrical Low Pressure Impactor. www.dekati.fi .