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RESEARCH PAPERS

Maintaining Low Exhaust Emissions With Turbocharged Gas Engines Using a Feedback Air–Fuel Ratio Control System

[+] Author and Article Information
D. W. Eckard

Cooper Industries—Superior, Springfield, OH 45503

J. V. Servé

New Engine Development, Cooper Industries—Superior, Springfield, OH 45503

J. Eng. Gas Turbines Power 109(4), 487-490 (Oct 01, 1987) (4 pages) doi:10.1115/1.3240068 History: Received November 14, 1986; Online October 15, 2009

Abstract

Maintaining low exhaust emissions on a turbocharged, natural gas engine through the speed and load range requires precise control of the air–fuel ratio. Changes in ambient conditions or fuel heating value will cause the air–fuel ratio to change substantially. By combining air–gas pressure with preturbine temperature control, the air–fuel ratio can be maintained regardless of changes in the ambient conditions or the fuel’s heating value. Design conditions and operating results are presented for an air–fuel controller for a turbocharged engine.

Copyright © 1987 by ASME
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