Carburettor/ Injection System Flashcards
The function of a diffuser (compensating jet) is to?
Maintain a constant mixture in a piston engine at low and high power settings.
When applying precautionary carburettor heating on a reciprocating engine with a FIXED pitch propeller, the RPM will?
Decrease
Variations in mixture ratios for carburettors are achieved by the adjustment of?
Fuel flow.
The purpose of the Venturi in a carburettor is to?
Create the suction necessary to cause fuel to flow through the carburettor main jets.
When applying precautionary carburettor heating on a reciprocating engine with a constant speed propeller in its constant speed range the mixture will?
Become richer
With regard to a piston engine, the sections of the carburettor where icing would most likely occur are the?
Venturi and the throttle valve.
Consider a fuel injection system. What is the central point where fuel is distributed to the individual cylinders?
Manifold valve.
The use of carburettor heating during take-off and climb is discouraged because of the?
Loss of power and increased risk of detonation
Excessive priming of a piston engine should be avoided because?
- Risk of engine fire
- Risk of flooding the engine
- It fouls the spark plugs
The function of an accelerator pump in the carburettor of a piston engine is to?
Enable proper functioning of a piston engine during throttle advance
the purpose of the barometric correction in a carburettor is to?
Maintain the correct fuel to air mass ratio when the altitude increases
In a reciprocating engine, the function of the primer pump is to?
Provide additional fuel for engine start.
What is a fuel strainer used for?
It collects unwanted particles in the fuel system.
To enable proper functioning of a piston engine during rapid throttle advance a carburettor is fitted with?
An accelerator pump
When applying precautionary carburettor heating on a reciprocating engine with a CONSTANT speed propeller in its constant speed range, the RPM?
The RPM remains constant
