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Variations in mixture ratios for carburettors are achieved by the adjustment of ? Intake > airport

exemple question 159


As altitude increases the mixture ratio of a piston engine should be adjusted to ?

exemple question 160
As altitude increases mixture ratio of a piston engine should be adjusted to Reduce fuel flow in order to compensate the decreasing air density.


When applying carburettor heating ?

exemple question 161
When applying carburettor heating The mixture becomes richer. When you apply carburettor heating air (which will mix with fuel in carburettor) passes around muffler (or exhaust pipe) in order to be heated to avoid risks of icing the air's density decreases as air heated what generates a mixture (mixture) richer.


exemple question 162
When pilot moves mixture lever of a piston engine towards a lean position Amount of fuel entering combustion chamber reduced. When you apply carburettor heating air (which will mix with fuel in carburettor) passes around muffler (or exhaust pipe) in order to be heated to avoid risks of icing the air's density decreases as air heated what generates a mixture (mixture) richer.


exemple question 163
When altitude increases without adjustment of mixture ratio piston engine performance affected because of a A decrease of air density with a fuel flow which becomes too high. When you apply carburettor heating air (which will mix with fuel in carburettor) passes around muffler (or exhaust pipe) in order to be heated to avoid risks of icing the air's density decreases as air heated what generates a mixture (mixture) richer.


exemple question 164
A rich mixture setting has to be used during climb segments this results in a Lower cylinder head temperature. To obtain best torque during climb you will have to decrease fuel entering in carburettor in order to compensate decreasing of air density a rich mixture will not permit to deliver best available power but it permits a lower cylinder head temperature.


exemple question 165
Maximum exhaust gas temperature egt of a piston engine theoretically associated with a Fuel to air ratio of 5. Egt relative to temperature of charge as it burns within cylinder cht measures temperature of engine cylinder the highest egt achieved at a ratio of 15 parts of air to one part of fuel if ratio reduced ie rich charge temperature reduces due to excess fuel being left in cylinder if ratio greater than 15 1 ie lean or weak charge cooled excess air to appreciate why cht increases with lean mixtures we must consider speed at which fuel burns ie its flame rate lean mixtures burn slower than rich mixtures this means more heat transferred to engine components with lean mixtures example if you move a lighted match quickly under you hand no problem but move it slowly you will burn your hand! slow burning lean mixtures will increase cht.


8
For a given type of oil oil viscosity depends on Fuel to air ratio of 5. Egt relative to temperature of charge as it burns within cylinder cht measures temperature of engine cylinder the highest egt achieved at a ratio of 15 parts of air to one part of fuel if ratio reduced ie rich charge temperature reduces due to excess fuel being left in cylinder if ratio greater than 15 1 ie lean or weak charge cooled excess air to appreciate why cht increases with lean mixtures we must consider speed at which fuel burns ie its flame rate lean mixtures burn slower than rich mixtures this means more heat transferred to engine components with lean mixtures example if you move a lighted match quickly under you hand no problem but move it slowly you will burn your hand! slow burning lean mixtures will increase cht.


9
The fuel temperature at which under standard conditions vapour ignites in contact with a flame and extinguishes immediately the Fuel to air ratio of 5. Egt relative to temperature of charge as it burns within cylinder cht measures temperature of engine cylinder the highest egt achieved at a ratio of 15 parts of air to one part of fuel if ratio reduced ie rich charge temperature reduces due to excess fuel being left in cylinder if ratio greater than 15 1 ie lean or weak charge cooled excess air to appreciate why cht increases with lean mixtures we must consider speed at which fuel burns ie its flame rate lean mixtures burn slower than rich mixtures this means more heat transferred to engine components with lean mixtures example if you move a lighted match quickly under you hand no problem but move it slowly you will burn your hand! slow burning lean mixtures will increase cht.


10
Pre ignition refers to condition that may arise when The mixture ignited abnormal conditions within cylinder before spark occurs at plug. Egt relative to temperature of charge as it burns within cylinder cht measures temperature of engine cylinder the highest egt achieved at a ratio of 15 parts of air to one part of fuel if ratio reduced ie rich charge temperature reduces due to excess fuel being left in cylinder if ratio greater than 15 1 ie lean or weak charge cooled excess air to appreciate why cht increases with lean mixtures we must consider speed at which fuel burns ie its flame rate lean mixtures burn slower than rich mixtures this means more heat transferred to engine components with lean mixtures example if you move a lighted match quickly under you hand no problem but move it slowly you will burn your hand! slow burning lean mixtures will increase cht.


11
A fuel strainer fuel filter when fitted to a carburettor will be positioned Upstream of needle valve. A fuel strainer a fuel filter the fuel need to be filtered before entering carburettor .


12
The working cycle of a four stroke engine Induction compression power exhaust. A fuel strainer a fuel filter the fuel need to be filtered before entering carburettor .


13
Specific fuel consumption defined as Mass of fuel required to produce unit power unit time. A fuel strainer a fuel filter the fuel need to be filtered before entering carburettor .


14
The purpose of contact breaker to Control primary circuit of magneto. A fuel strainer a fuel filter the fuel need to be filtered before entering carburettor .


15
Under normal running conditions a magneto draws primary current From a self contained electro magnetic induction system. A fuel strainer a fuel filter the fuel need to be filtered before entering carburettor .


16
The air in a piston engine turbo supercharger centrifugal compressor Enters eye of impeller leaves at a tangent to periphery. the air in a piston engine turbo supercharger centrifugal compressor enters eye of impeller leaves at a tangent to periphery.


17
The power of a piston engine which will be measured a friction brake Enters eye of impeller leaves at a tangent to periphery. the air in a piston engine turbo supercharger centrifugal compressor enters eye of impeller leaves at a tangent to periphery.


18
The power output of a piston engine can be calculated Enters eye of impeller leaves at a tangent to periphery. the air in a piston engine turbo supercharger centrifugal compressor enters eye of impeller leaves at a tangent to periphery.


19
The power of a piston engine decreases during a climb with a constant power lever setting because of decreasing Enters eye of impeller leaves at a tangent to periphery. Howarthson note in this question 'with a constant power lever setting' so as you climb power will be decreasing because air becoming less dense so manifold absolute pressure will be decreasing.


20
The torque of an aeroplane engine can be measured at Gear box which located between engine the propeller. Howarthson note in this question 'with a constant power lever setting' so as you climb power will be decreasing because air becoming less dense so manifold absolute pressure will be decreasing.



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