Development of a Parallel-Type Diesel Hybrid Bus and Fuel Efficiency Results from Trial Runs 2011-28-0065
High-powered vehicles offer an advantage of superior fuel
economy through use of regenerative braking and lowered transient
emissions by reducing the operating portion of the engine to follow
load as closely as in a conventional bus. A hybrid bus was designed
and a prototype was developed. It has a parallel-type hybrid
powertrain system and uses a 6-liter diesel engine which satisfy
Euro-5 emission standard. 44-kW-electric motor, AMT (automated
manual transmission) and Li-ion-type batteries were applied to this
hybrid bus.
Total 8 hybrid buses are test-running in 6 cities and the
driving performances are monitored in terms of fuel efficiency,
emission and convenience. This paper presents the performance,
major component features and calibration procedures of hybrid
powertrain systems. Test run monitoring result showed a benefit of
fuel economy at least 36% by comparing to a conventional
diesel-powered bus. Chassis dynamometer tests were also carried out
and hybrid bus showed 42% ~ 54% higher fuel efficiency and low
emission levels than diesel bus. So it is expected that this system
may become a cost-effective alternative drive for next medium and
heavy hybrid vehicles.
Citation: Kim, Y., Lee, Y., Choi, K., and Jeong, D., "Development of a Parallel-Type Diesel Hybrid Bus and Fuel Efficiency Results from Trial Runs," SAE Technical Paper 2011-28-0065, 2011, https://doi.org/10.4271/2011-28-0065. Download Citation
Author(s):
Yongrae Kim, Yonggu Lee, Kyonam Choi, Dongsoo Jeong
Affiliated:
Korea Institute of Machinery and Materials
Pages: 7
Event:
16th Asia Pacific Automotive Engineering Conference
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Fuel economy
Energy conservation
Regenerative braking
Manual transmissions
Diesel / compression ignition engines
Powertrains
Buses
Environmental regulations and standards
Batteries
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