AGK day 2 Flashcards
What is the ineffective crank angle
The point where the piston doesn’t move at the bottom dead centre but the crank is still adjusting
What is stoichiometric
Chemically balanced
What is the AFR
15:1
How does a carboreta work
A Venturi a pressure duct going through the point of lowest pressure that allows the atmospheric pressure to push it out
What is a main jet
A bolt with a hole that decides how much is released
What is an atomiser
Turns liquid into vapour so that it’ll burn
What type of fuel do you want for take off
Rich for more efficiency
What type of fuel do you want for cruising
A leaner fuel
What does accelerator pumps do
Prevents lean cut
How do you get rid of ice in the carboreta
Carb heat
What is the problems with carb heat
You lose 15% of power
Create condensation ice conditions
Could lead to detonation
How does a fuel injection work
No Venturi and carboreta icing and will have alt air instead
At what stage of flight is the fuel pump on?
Critical stages of flight and off during cruising
What is the FADEC
Full authority digital control
Looks into throttle position and engine speed
What are the 4 types of valve for fuel injection
Manifold valve
Metering valve
Mixture valve
Distributor valve
With regard to the fuel injection system what is the last point all the fuel is together
The manifold valve
What are the three types of oil
Synthetic
Semi-synthetic
Mineral
What is a dry sump
A sealed fuel system that is mainly used for acrobatic aircraft and high altitude
What is a wet sump
A fuel system that is used in standard low altitude flight with no oil reservoir
Is oil compressible
No
Which is the main task of the fuel system
To ensure that 100% of the fuel flow required in the most critical phase of flight is provided
The purpose of the Venturi in a carburettor is
To create the suction necessary to cause fuel to flow through the carburettors main jets