How does the mixture control change the fuel-air mixture ratio on the Teledyne-Continental fuel injection system? When the mixture control is in its Full Rich position, all fuel goes to the manifold valve. When it is in the Idle Cutoff position, all fuel is returned to the pump inlet.
How does the automatic mixture control in a pressure carburetor keep the fuel air mixture constant as the aircraft changes altitude?
8. How does the automatic mixture control in a pressure carburetor keep the fuel-air mixture constant as the aircraft changes altitude? It automatically and progressively bleeds the air between the two sides of the air diaphragm and decreases the air metering force.
What is the primary purpose of the bypass valve in the Teledyne Continental fuel injection system injector pump?
1. What is the purpose of the bypass valve in an engine-driven fuel pump? The bypass valve allows fuel to flow around the engine-driven pump for starting and for emergency operation if the engine-driven pump should fail.
What is the purpose of the discharge nozzles in the fuel injection system?
As fuel flow through the regulator is increased above idle requirements, fuel pressure builds up in the nozzle lines. This pressure fully opens the flow divider valve, and fuel distribution to the engine becomes a function of the discharge nozzles.
What is the function of the fuel mixture control in the fuel metering device?
It must meter fuel proportionately to air to establish the proper fuel/air mixture ratio for the engine at all speeds and altitudes at which the engine may be operated.
What is used to lean the mixture in a pressure carburetor?
The fuel mixture is automatically altitude-controlled by bleeding higher pressure air from chamber A to the chamber B as it flows through a tapered needle valve. The needle valve is controlled by an aneroid bellows, causing a leaning of the mixture as altitude increases.
What is the chief disadvantage of the float type carburetor?
The chief disadvantage of the float carburetor, however, is its icing tendency. Since the float carburetor must discharge fuel at a point of low pressure, the discharge nozzle must be located at the venturi throat, and the throttle valve must be on the engine side of the discharge nozzle.
Why the Continental fuel pump is referred to as the heart of the system?
It is the heart of the fuel system since it delivers fuel to the engines. … They pump fuel under pressure through a shutoff valve for each engine.
What is the simplest type of fuel system?
Gravity feed aircraft fuel systems
This is the simplest of fuel systems commonly found in high wing aircraft with a fuel tank in each wing. A gravity feed system is designed with the fuel tanks above the engine and propulsion system, with lines feeding the fuel from the tank to the engine via gravity.
What is Teledyne Continental fuel injection system use?
The Continental fuel-injection system injects fuel into the intake valve port in each cylinder head. … It is a continuous-flow type, which controls fuel flow to match engine airflow. The continuous-flow system permits the use of a rotary vane pump which does not require timing to the engine.
What is the main component of fuel injection system?
Abstract: The fuel injection system can be divided into low-pressure and high-pressure sides. The low-pressure components include the fuel tank, fuel supply pump and fuel filter. The high-pressure side components include a high pressure pump, accumulator, fuel injector and fuel injector nozzle.
Where is the fuel injector nozzle?
Because fuel flows through the system in a continuous stream, regardless of piston position or stroke, the nozzle is placed upstream of the intake valve.
How does fuel injection work aviation?
Fuel injected systems use a fuel pump to push fuel through a metering system. Then, the fuel flows through injector lines to each cylinder. … However in some aircraft, the electric backup pump doesn’t provide enough pressure on its own to keep the engine running.
What position does the fuel mixture control need to be set at to obtain the proper fuel-air mixture?
Carburetors are normally calibrated at sea-level air pressure where the correct fuel-air mixture ratio is established with the mixture control set in the FULL RICH position. However, as altitude increases, the density of air entering the carburetor decreases, while the density of the fuel remains the same.
What are the three general causes of vapor lock?
What are the three general causes of vapor lock? They are low fuel pressure, high fuel temperatures, and excessive fuel turbulence.
What position does the fuel mixture control need to be set at to obtain the proper fuel-air mixture requirements?
The metered fuel/air mixture is then delivered to the cylinder intake. Carburetors are calibrated at sea level, and the correct fuel-to-air mixture ratio is established at that altitude with the mixture control set in the FULL RICH position.