3.0 Fuel Injection 121

Let's explore the fuel discharge nozzle, a critical component for efficient fuel delivery in engines. This detailed diagram shows its internal structure and function.Continuous flow fuel injector nozzles often include air bleed holes. These allow air to mix with fuel, helping to vaporize it effectively.This Teledyne Continental Fuel Injector features a shrouded brass body, metering orifice, multiple air bleed holes, and an emulsion chamber.When installing fuel fittings with pipe threads, it's common practice to use thread sealant. However, we must apply it sparingly to avoid issues.For proper installation, insert the fitting one thread into the carburetor, then apply sealant to the remaining threads. This prevents sealant from entering the carburetor.Excess sealant can easily plug an orifice. If this happens, the carburetor would need removal, disassembly, cleaning, reassembly, and reinstallation.Teflon plumber's tape, though a common commercial product, must NOT be used in aircraft maintenance due to the risk of stray particles entering the system.Here we see a comprehensive diagram of a fuel discharge nozzle, illustrating its various parts and how they contribute to the fuel injection process.Rigging carburetor controls involves connecting and adjusting throttle controls to ensure full movement corresponds to cockpit controls. Check for springback and correct any play.When installing carburetors with manual mixture controls, adjust the mechanism to provide equal springback at both the RICH and LEAN ends of the control quadrant.