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POWERPLANT - RECIPROCATING ENGINE Flashcards

(51 cards)

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1
Q

During which stroke of the Otto cycle does the fuel-air mixture get compressed?

A

Compression stroke

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2
Q

In the Otto cycle, what is the primary purpose of the power stroke?

A

To convert chemical energy into mechanical energy

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3
Q

Which phase of the Otto cycle involves the piston moving upwards and both intake and exhaust valves closed?

A

Compression stroke

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4
Q

What are the main components of a reciprocating engine?

A

Cylinder, piston, crankshaft, camshaft, and valves

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5
Q

What is the primary function of the carburetor in an aircraft engine?

A

Mix fuel and air

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6
Q

Which part of the engine does the crankshaft connect to?

A

Piston

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7
Q

What is the purpose of the magneto in an aircraft engine?

A

Provide spark for ignition

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8
Q

Which component in a reciprocating engine controls the opening and closing of the valves?

A

Camshaft

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9
Q

What is the primary function of the spark plug in a piston engine?

A

Ignite the fuel-air mixture

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10
Q

Which component in a reciprocating engine converts linear motion into rotary motion?

A

Crankshaft

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11
Q

What is the primary purpose of the fuel strainer in an aircraft engine?

A

Filter out contaminants

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12
Q

What is the main function of the camshaft in a piston engine?

A

Regulate the opening and closing of valves

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13
Q

Which component in a reciprocating engine helps reduce friction between moving parts?

A

Bearings

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14
Q

Which component is responsible for controlling the timing of the spark in a reciprocating engine?

A

Magneto

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15
Q

How is fuel typically delivered to the cylinders in a fuel-injected engine?

A

By fuel injectors

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16
Q

What type of fuel system is commonly found in Continental fuel-injected engines?

A

Continuous flow fuel injection

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17
Q

What is the primary function of the alternator in an aircraft engine?

A

a. Generate electrical power

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18
Q

Which type of cooling system uses air flowing through the engine cowling to cool the engine?

A

Air cooling

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19
Q

What is the purpose of the scavenge pump in a dry sump lubrication system?

A

Remove excess oil from the engine

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20
Q

Which component in a reciprocating engine converts linear motion into rotational motion?

A

Crankshaft

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21
Q

What component in a reciprocating engine controls the timing of the intake and exhaust valves?

22
Q

What is the purpose of an intercooler in a turbocharged engine?

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A

Cool the air before it enters the engine

23
Q

What is the purpose of a supercharger in an aircraft engine?

Study These Flashcards
A

Increase air pressure in the intake manifold

24
Q

What component controls the fuel-air mixture in a fuel-injected engine?

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A

Injector nozzles

25
What is the function of the intercooler in a turbocharged piston engine?
Decrease intake air temperature
26
Which component helps reduce the vibration of an aircraft engine?
Vibration damper
27
What is the purpose of the oil cooler in an aircraft engine?
Decrease engine temperature
28
What is the purpose of the exhaust manifold in an aircraft engine?
Collect and expel exhaust gases
29
What does the term 'critical altitude' refer to in a turbocharged engine?
The altitude at which the turbocharger no longer provides additional boost
30
What is the function of a fuel injector in a fuel-injected engine?
Inject fuel directly into the combustion chamber
31
What is the primary function of a turbocharger in an aircraft engine?
Compress incoming air
32
What is the purpose of the primer in a piston engine?
Inject fuel directly into the cylinders
33
What component adjusts the mixture control in a fuel-injected engine?
Mixture control valve
34
What type of lubrication system is typically used in a reciprocating aircraft engine?
Pressure lubrication
35
What is the purpose of baffles in an aircraft engine's cooling system?
Direct airflow around the engine
36
What is the function of the wastegate in a turbocharged engine?
Control the flow of exhaust gases to the turbocharger
37
What is the main disadvantage of a carbureted engine compared to a fuel- injected engine?
Susceptibility to icing
38
What is the purpose of the mixture control in a piston engine?
Adjust the fuel-to-air ratio
39
What does the term 'supercharger' refer to in aircraft engines?
A device that compresses intake air
40
What is the function of a fuel flow divider in a fuel-injected engine?
Distribute fuel evenly to all cylinders
41
What is the primary advantage of a dry sump lubrication system?
Better cooling and lubrication under high loads
42
Which component regulates the pressure of the fuel entering the carburetor?
Fuel pressure regulator
43
What does the term 'ram air' refer to in an aircraft induction system?
Air forced into the engine by the aircraft's forward motion
44
What is a key feature of the Lycoming IO series engines?
Fuel injection system
45
What is a common method to identify Lycoming engines in maintenance records?
By model designation (e.g., O-360, IO-540)
46
Which of the following is a characteristic of Continental engines?
They are typically horizontally opposed and air-cooled
47
What is the purpose of the lubricating oil in a reciprocating engine?
To lubricate moving parts and reduce friction
48
Which oil viscosity is typically used in colder climates for reciprocating engines?
SAE 20
49
How does a fuel injection system in a reciprocating engine improve performance?
delivering fuel more precisely to each cylinder
50
What is the function of the intercooler in a turbocharged engine?
To cool the compressed air before it enters the combustion chamber
51
What is the typical compression ratio range for an aircraft reciprocating engine?
7:1 to 9:1

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