Comparative Performance of Two Postal Service Vehicles Operated on Gasoline, Compressed Natural Gas and Propane.
Comparative Performance of Two Postal Service Vehicles
Operated on Gasoline, Compressed Natural Gas and
Hill, J. E.; Didion, D. A.
Winter Annual Meeting, 1974. American Society of
Mechanical Engineers (ASME). November 17-22, 1974, New
York, NY, 1974.
motor vehicles; gasoline; natural gas; propane; exhaust
emissions; trucks; fuels; LP gas; tests; temperature;
fuel/air ratio; hydrocarbons; carbon monoxide; nitorgen
The operational and exhaust emission characteristics of
a 1/2-ton and a 1-ton truck run on three different fuels
compressed natural gas (CNG) and liquefied petroleum gas
or propane (LPG) were measured. The
vehicles were put into an environmental chamber so that
the rear wheels rested on a chassis dynamometer. In
the series of tests, ambient temperature was controlled
at various levels between 1 and 110 F and a range of
spark advance settings and air-fuel rations were used on
the engines. The vehicles were run at various
dynamometer loads and simulated speeds ranging from
idling to 50 mph. HC, CO, and NOx emissions were
measured and the results showed to what extent the
various pollutants could be reduced by suing the
fuels (CNG or LPG).