Piston engine operating principle (II) fuel and air intake system

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July 28, 2025
Category Connection: Aircraft Engine
Brief: Discover the operating principle of the Lycoming IO-390-C3B6 engine, focusing on its fuel and air intake system. This high-performance, 6-cylinder engine delivers 300 horsepower and is ideal for light aircraft. Learn about its fuel injection, air-cooled design, and reliability.
Related Product Features:
  • 6-cylinder, horizontally opposed engine with 541.5 cubic inches displacement.
  • Delivers 300 horsepower at 2,700 RPM for high-performance applications.
  • Fuel injection system ensures better efficiency and performance.
  • Air-cooled design simplifies maintenance and reduces weight.
  • Compression ratio of 8.7:1 for optimal power output.
  • Uses 100LL aviation gasoline (avgas) for fuel.
  • Dry weight of approximately 390 lbs (177 kg).
  • Known for durability and long service life with proper maintenance.
Faqs:
  • What type of fuel does the Lycoming IO-390-C3B6 engine use?
    The engine uses 100LL aviation gasoline (avgas) for optimal performance.
  • What is the power output of the IO-390-C3B6 engine?
    The engine delivers 300 horsepower at 2,700 RPM, making it suitable for high-performance aircraft.
  • How is the IO-390-C3B6 engine cooled?
    The engine features an air-cooled design, which simplifies maintenance and reduces overall weight.