Influence of Homogeneous Charge on the Exhaust Emissions of Hydrocarbons, Carbon Monoxide, and Nitric Oxide from a Multicylinder Engine 710588
A fuel-air mixture generator has been developed which allows a vehicle to be run on a chassis dynamometer under both transient and steady-state conditions on premixed homogeneous gasoline-air mixtures using conventional nonleaded gasoline. Under these conditions cylinder-to-cylinder-variations of air/fuel ratio, and of carbon monoxide emission from a 90 cu in. 4-cyl engine were virtually eliminated, and variations of NO emissions were greatly reduced. However, variations in hydrocarbon emission were scarcely affected. With the premixed charge the vehicle could be run on an extremely lean air-fuel mixture, while retaining good driveability. At an air/fuel ratio of 22.5/1, CO and NO emissions over the U.S. Federal cycle according to the 1970 test procedure were 2.7 and 0.4 g/mile, respectively. However, unburned hydrocarbon emissions exceeded current legislative requirements.
Citation: Lindsay, R., Thomas, A., Woodworth, J., and Zeschmann, E., "Influence of Homogeneous Charge on the Exhaust Emissions of Hydrocarbons, Carbon Monoxide, and Nitric Oxide from a Multicylinder Engine," SAE Technical Paper 710588, 1971, https://doi.org/10.4271/710588. Download Citation
Author(s):
R. Lindsay, A. Thomas, J. A. Woodworth, E. G. Zeschmann
Affiliated:
Shell Research Ltd., England
Pages: 16
Event:
International Mid-Year Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Carbon monoxide
Hydrocarbons
Exhaust emissions
Test procedures
Emissions
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