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Table 20: Transportation Technology Summary
Stated Need Technology Descriptor
Impact Ranking Economy Environment
More efficient and lower emission natural gas turbine engines Next Gen NG Gas Turbine Engines 1.31 0.57
More efficient and lower emission natural gas piston engines
Next Gen NG Piston Engines (LDV) 1.44 0.57 Next Gen NG Piston Engines (LHDV and MHDV) 1.44 0.65 Next Gen NG Piston Engines (HHDV) 1.44 0.73 Next Gen NG Piston Engines (Rail) 1.52 0.57 Alternative natural gas engine types (e.g. hybridization, NG fuel cells) Alternative Engine Architecture 1.37 0.57
Smaller capacity economic LNG production units Economic <10,000 gal/day LNG Units 1.31 0.5
Lower cost and safe fuel dispensing Fuelling Infrastructure 1.39 0.5
Next generation on-board fuel storage with lower cost On-board Fuel Storage 1.15 0.73
NG storage solutions for fuelling infrastructure CNG and Long Term NG LNG Storage 1.15 0.73
Systems for LDV fuelling at home Home Fuelling Systems for LDVs 1.37 0.36
Improved efficiency of NG fuel use in bi-fuel engines Optimized Bi-Fuel Engines to Run on NG 1.26 0.43
Figure 27: Transportation Technology Plot
0.0
0.5
1.0
0.0 1.0 2.0
Economy
Optimized Bi-Fuel Engines
Home-fuelling Systems for LDVs
CNG and Long-term LNG Storage
On-board Fuel Storage, including Tank Weight and Fuel Boil-off
More Economical Fuelling Infrastructure
Economic <10,000 gal/day LNG Units
Alternative Engine Architecture
Next Generation NG Rail Engine
Next Generation NG Piston Engines (HDV)
Next Generation NG Piston Engines (MDV)
Next Generation NG Piston Engines (LDV)
Next Generation NG Gas Turbine Engines
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