Exhaust emissions from an urban transit bus powered by a diesel/natural gas dual-fuel system / prepared by: Greg Rideout; prepared for: BC Transit. : En83-14/94-10E-PDF

"The exhaust emission rates of the regulated compounds, as well other unregulated components of the exhaust, were determined for an urban transit bus which had been converted to operate on either diesel or diesel-natural gas. The exhaust emission tests were conducted on a heavy duty chassis dynamometer capable of simulating the inertia weight and road loads that urban buses are subjected to during normal on-road operation. The emissions of total hydrocarbons, methane, carbon monoxide, carbon dioxide, oxides of nitrogen, carbonyls, and total particulate were determined for the bus over various transient chassis dynamometer driving cycles. The test cycles included in the project were the Central Business District (CBO), the New York Bus Cycle (NYBUS), and New York Bus Composite Cycle (NYBCOMP). Arterial, and Commuter Cycles"--Abstract.

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