Natural Gas Vehicle Reports and Studies

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NGV Engine Performance Reports

• NGV Legacy Fleet Study (Adobe PDF, 124 KB)
  
• Cummins Engine Study (Adobe PDF, 220 KB)
  
• Detroit Diesel Engine Study (Adobe PDF, 176 KB)
• Detroit Diesel 50 G Engine Testing Project - Report (Adobe PDF, 3.6 MB)
• Detroit Diesel  50 Gas Engine -  Field Test Report (Adobe PDF, 2.0 MB)
• Cummins, John Deere, and Detroit Diesel Engine Testing Report (Adobe PDF, 5.3 MB)
  

Information Related to Proposed Revisions of the CARB CNG Fuel Specification Regulations

• SDG&E and SoCalGas Transmittal Letter 041306 (Adobe PDF, 30 KB)
  
• Southern California Heavy-Duty CNG Vehicle Report - 2005 Update 041006 (Adobe PDF, 153 KB)
  
• GTI Light-Duty Vehicle Fuel Composition Study (Adobe PDF, 389 KB)
  
• 2005 CARB CNG Fuel Specification Workshop Presentation from SDG&E and SoCalGas 80305 (Adobe PDF, 62 KB)
  
• CARB Proposed Revisions to the CARB CNG Fuel Specification 062805 (Adobe PDF, 9 KB)
• SDG&E and SoCalGas Transmittal Letter 033009 (Adobe PDF, 30 KB)
• Southern California Heavy-Duty CNG Vehicle Report - 2008 Update 033009 (Adobe PDF, 512 KB)
• Effects of Gas Composition on Emissions from Heavy-Duty Natural Gas Engines -- October, 2009 (Adobe PDF, 1 MB)

Updated 10/2009