A Procedure for Evaluation Cycle Emissions From Raw Exhaust Gas Analyses

Paper #:
  • 871194

Published:
  • 1988-03-01
Abstract:
A procedure has been developed for evaluating equivalent drive cycle emission results from raw exhaust gas emissions data obtained from an engine under test on a computer controlled Vehicle Simulator Engine Dynamometer. The emitted species data is integrated with the air intake flow rate to determine the total mass of emissions, after correcting for the reduction in exhaust gas mass due to precipitation of the moisture of combustion. This procedure eliminates the need for the Constant Volume Sample (CVS) System attached to the vehicle exhaust while undergoing simulated drive testing on a chassis dynamometer to evaluate compliance of the test vehicle with the Australian Design Rules, ADR27 and ADR37.Sources of error with the procedure are examined by comparing the fuel consumption measured using a volumetric technique driving the test with that evaluated by a carbon balance procedure as given in the Australian Design Rules.
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