The Influence of Mixture Distribution on Emissions from an Aircraft Piston Engine.

Abstract

Cylinder-to-cylinder mixture ratio distributions were measured for both the injected and carbureted versions of the AVCO-Lycoming 0-320 engine to determine the effects of non-uniform distribution on the exhaust emissions of carbon monoxide, hydrocarbons, and oxides of nitrogen. Data for both normal and lean-out conditions were obtained. An experimental Turbulent Flow Manifold for the carbureted engine was tested as a potential means for improved cylinder-to-cylinder distribution. Results showed improvements for the low power operating modes but deterioration for the high power modes. An analysis based on test results predicts that the EPA emission requirements can be met, for this engine, by improving mixture distribution and leaning both the taxi-out and approach modes. Improvements in fuel economy are also predicted. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1980
Accession Number
ADA139475

Entities

People

  • J. A. Nicholls
  • W. Mirsky

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Intakes
  • Air Supplies
  • Carbon Monoxide
  • Cooling
  • Dielectric Gases
  • Engineering
  • Engines
  • Flow Rate
  • Fuel Air Ratio
  • Fuel Consumption
  • Gases
  • Measurement
  • Piston Engines
  • Plastic Explosives
  • Test Facilities
  • Turbulent Flow
  • United States

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Internal Combustion Engine (ICE) Technology.
  • Petroleum Engineering