This report describes the findings of a non-random selection survey undertaken to assess the performance standard and level of public satisfaction with CNG powered vehicles. A total of 65 vehicles from the Auckland area were evaluated covering most of the popular models and CNG conversion systems. A significant proportion was found to have CNG equipment deficiencies which caused a power difference between petrol and CNG of more than 20%. The majority of these vehicles were capable of being rectified relatively easily. Approximately 75% of the people surveyed were satisfied with the power output of their vehicle. Over half of the vehicles belonging to dissatisfied owners exhibited power differences in excess of 20%. The major complaint, raised by over 25% of the people surveyed, was difficult cold starting on CNG.

  • Corporate Authors:

    University of Auckland

    Department of Mechanical Engineering
    Auckland,   New Zealand 
  • Authors:
    • Jones, K
    • Raine, R R
    • Stephenson, J
  • Publication Date: 1985-2

Media Info

  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00457483
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NZERDC-113
  • Files: TRIS
  • Created Date: Aug 31 1986 12:00AM