Browse Publications Technical Papers 710604
1971-02-01

Development of a Fuel-Based Mass Emission Measurement Procedure 710604

A calculational procedure is derived which expresses exhaust emissions on a fuel basis. Existing vehicle exhaust sampling procedures are utilized, together with fuel consumption data which are simultaneously obtained. Since no measurements of exhaust or air flow are required, the procedure is not limited by powerplant size.
Emission values are computed in terms of grams per mode and grams per mile, as well as on “corrected” molar concentration (fuel) bases. Additional calculated vehicle developmental parameters include air-fuel ratio (carbon balance and oxygen balance), air consumption, dry exhaust volume, fuel economy, and combustion efficiency. Conversion of wet exhaust analyses to dry bases is considered.
Actual mass emissions are determined for both the current federal seven-mode cycle and the 1972 federal test cycle. The observed, uncorrected vehicle concentration data, together with fuel flow data obtained by means of a digital fuel meter, are reduced by means of an on-line computer installation. In addition to tests of lean, catalytic, and rich reactor vehicles, this procedure has been employed for vehicles powered by gas turbine, steam, diesel, and hybrid ICE-electric powerplants, including some vehicles in the 1970 “Clean Air Car Race.”

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Accuracy of A/F Calculation from Exhaust Gas Composition of SI Engines

891971

View Details

TECHNICAL PAPER

The 4-and 5-Cylinder Turbocharged Diesel Engines for Volkswagen and Audi

820441

View Details

TECHNICAL PAPER

Excess Emissions and Fuel Consumption of Modern Spark Ignition Passenger Cars at Low Ambient Temperatures

2012-01-1070

View Details

X