Effect of Engine-Operating Variables and Internal Coolants on Spark-Advance Requirements of a Liquid-Cooled Cylinder

Abstract

Effects are discussed of fuel-air ratio, engine speed, air flow, mixture, temperature, and internal coolants on peak-power spark advance. Relation of spark advance to knock-limited engine performance is determined at different mixture temperatures. Fuel-air and internal cool-fuel ratio affects peak-power spark timing greatly. Knock-limited indicated mean effective pressure at take-off increased 6% when spark timing was retarded from normal value to point where rough operation was reached.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1945
Accession Number
ADA800559

Entities

People

  • A. F. Lietzke
  • Carl Dudugjian
  • John F. Pfender

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Air Flow
  • Air Pressure
  • Air Temperature
  • Burning Rate
  • Combustion
  • Compression
  • Compression Ratio
  • Engines
  • Fuel Air Ratio
  • Fuel Consumption
  • Heat Of Vaporization
  • Ignition
  • Intake Manifolds
  • Peak Power
  • Power
  • Vaporization

Readers

  • Combustion and Flow Dynamics.
  • Petroleum Engineering