Compressed Natural Gas Vehicles Ian Petersen

Energy Density Source: NYSERDA

Storage

CNG Storage Vessels 3 Distinct Categories  Plain Metal Cylinder  Fiber Wrapped Metal Cylinder  Composite

The CNGV Image:

Refueling  Slow Fill  Fuelmaker  0.46 gge/hr  Residential Natural Gas  Fast Fill  About the same fill rate as conventional gas stations  Few and far between

Fast Fill CNG Stations  777 Stations  150:1 Image:

Combustion and Emissions  130 Octane rating  12.5:1  Emissions reduction based on Gasoline Engines  NO x by 30-60%  CO by 90-97%  CO 2 by 25%  NMHC 50-75%

Safety  Relief Valves  Shutoff Valves  Tank Design  Buoyancy of CNG  CNG LEL 5%  UEL 15% Images: Images: (top left), Powertech (top left, bottom)

Case Study: Honda Gx  Engine: 113hp 1.8L I-4  Fuel Efficiency: 24/36/28  Fuel Capacity: 8.03 gge  Range: 225 miles Image:

Other CNGVs  Conversions Kits  Diesel/CNG mix fuel  Dual Fuel: Gas/CNG  CNG Electric Hybrids  ICE  Turbine

Questions? Images: NYSERDA and Honda Gx website