TY - JOUR
T1 - Dual-fuel operation of gasoline and natural gas in a turbocharged engine
AU - Singh, Eshan
AU - Morganti, Kai
AU - Dibble, Robert W.
N1 - KAUST Repository Item: Exported on 2021-02-04
Acknowledgements: The authors acknowledge funding from the Clean Combustion Research Center at King Abdullah University of Science and Technology. The authors also wish to thank Nimal Naser for enlightening discussions on the project, and the technical support from Adrian Ichim and other laboratory staff.
PY - 2018/10/14
Y1 - 2018/10/14
N2 - Natural gas is a high-octane fuel that produces lower CO emissions per kilowatt hour than liquid transport fuels, with essentially zero sulfur emissions. Historically, natural gas has mostly been used in power generation and industrial applications. However, there has been a recent shift towards employing natural gas in the transport sector. In many regions, vehicles are retrofitted with compressed natural gas (CNG) systems, enabling operation on both gasoline and natural gas (and theoretical mixtures thereof). This work examines the effect of leveraging the secondary natural gas fuel system on the performance, efficiency and broader environmental impact of a high specific output gasoline engine. Firstly, mixture sweeps are presented for varying gasoline/natural gas ratios (100% gasoline to 100% natural gas) at wide open throttle (WOT) with both fixed and variable spark timing. This baseline information is then used to optimize the engine calibration for varying gasoline/natural gas ratios over a wider range of operating conditions. Finally, the CO-equivalent emissions are computed to investigate the broader environmental impact of an optimized gasoline/natural gas vehicle.
AB - Natural gas is a high-octane fuel that produces lower CO emissions per kilowatt hour than liquid transport fuels, with essentially zero sulfur emissions. Historically, natural gas has mostly been used in power generation and industrial applications. However, there has been a recent shift towards employing natural gas in the transport sector. In many regions, vehicles are retrofitted with compressed natural gas (CNG) systems, enabling operation on both gasoline and natural gas (and theoretical mixtures thereof). This work examines the effect of leveraging the secondary natural gas fuel system on the performance, efficiency and broader environmental impact of a high specific output gasoline engine. Firstly, mixture sweeps are presented for varying gasoline/natural gas ratios (100% gasoline to 100% natural gas) at wide open throttle (WOT) with both fixed and variable spark timing. This baseline information is then used to optimize the engine calibration for varying gasoline/natural gas ratios over a wider range of operating conditions. Finally, the CO-equivalent emissions are computed to investigate the broader environmental impact of an optimized gasoline/natural gas vehicle.
UR - http://hdl.handle.net/10754/629887
UR - http://www.sciencedirect.com/science/article/pii/S0016236118317058
UR - http://www.scopus.com/inward/record.url?scp=85054675338&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2018.09.158
DO - 10.1016/j.fuel.2018.09.158
M3 - Article
AN - SCOPUS:85054675338
VL - 237
SP - 694
EP - 706
JO - Fuel
JF - Fuel
SN - 0016-2361
ER -