Feasibility assessment of hydrogen-rich syngas spark-ignition engine for heavy-duty long-distance vehicle application

•Heavy-duty spark-ignition engine was examined for long-distance mass transit vehicle.•Hydrogen-rich syngas was used as the fuel.•One-dimensional engine model was created and validated using experimental results.•Simulation was conducted using actual highway driving data obtained from highway bus.•F...

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Bibliographic Details
Published in:Energy conversion and management 2022-01, Vol.252, p.115048, Article 115048
Main Authors: Kim, Seongsu, Kim, Junghwan
Format: Article
Language:English
Subjects:
Actual road driving
Air flow
All terrain vehicles
Automatic transmissions
Buses
Compressed gas
Data acquisition
Driving ability
Driving conditions
Energy efficiency
Engine cylinders
Feasibility studies
Fuel consumption
Fuel economy
Fuel tanks
Hydrogen
Mathematical models
Natural gas
Optimization
Simulation
Spark ignition
Spark-ignition engine
Synthesis gas
Vehicle fuel economy
Vehicle simulation
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Summary:•Heavy-duty spark-ignition engine was examined for long-distance mass transit vehicle.•Hydrogen-rich syngas was used as the fuel.•One-dimensional engine model was created and validated using experimental results.•Simulation was conducted using actual highway driving data obtained from highway bus.•Fuel consumption and emissions of the vehicle were estimated. The feasibility of syngas-fueled engine was assessed in numerical simulation using the single-cylinder engine experiment and on-road driving data. A 6-cylinder, 1841-cm3, spark-ignition engine was designed for a highway express bus in South Korea. Firstly, a one-dimensional engine model was constructed on a basis of the single-cylinder engine experimental data. The valve timings were optimized for maximizing the intake air flow at each engine speed. Then, the vehicle simulation model was built for the highway express bus equipped with the syngas engine and 10-speed automatic transmission. A parametric investigation was performed to optimize the gear shift schedule for the best fuel economy under on-road driving condition. The driving data was acquired from an actual highway express bus traveled from Daejeon to Seoul in South Korea. The syngas engine bus exhibited the trip fuel economy of 412 g/km in the driving simulation. The estimated travel distance was 194 km using the stock fuel tank employed for 20-MPa compressed natural gas.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2021.115048