AMT 2203: Powerplant Overhaul & Troubleshooting Flashcards
1
Q
It is called as internal combustion
A
Reciprocating engine
2
Q
Uses one or more pistons in order to convert pressure into rotational motion
A
Reciprocating engine
3
Q
Two types of reciprocating engine
A
Lycoming and continental
4
Q
The camshaft is on the top of the crankshaft
A
Lycoming
5
Q
The camshaft is at the bottom of the crankshaft
A
Continental
6
Q
The cycle is also called the ________
A
Otto cycle
7
Q
Four strokes
A
Intake, compression, power and exhaust
8
Q
Five events
A
Intake, compression, ignition, power and exhaust
9
Q
It is located on the camshaft that opens and closes the intake and exhaust valves
A
Cam lobe
10
Q
The part responsible for transmitting the movement of the camshaft towards the intake and exhaust valves of the engine
A
Rocker arm
11
Q
Foundation of engine
A
Crankcase
12
Q
Reduce the friction of moving parts
A
Bearings
13
Q
Three types of bearings
A
Plain bearings, ball bearings and roller bearings
14
Q
non-ferrous and used for crankshaft, cam ring, camshaft and connecting rods
A
Plain bearings
15
Q
Basic major components of a reciprocating engine
A
Crankcase, cylinders, pistons, connecting rods, valves, valve operating mechanism and crankshaft
16
Q
Consists of grooved inner and outer races.
A
Ball bearings
17
Q
They are used for shaft bearings and rocker arm bearings in some reciprocating engine
A
Ball bearings
18
Q
Two types of roller bearings generally used in the aircraft engine
A
Straight roller and the tapered roller bearings
19
Q
Used in high power aircraft engines as main bearings to support the crankshaft
A
Roller bearings
20
Q
Backbone of the reciprocating engine
A
Crankshaft
21
Q
It is subjected to most of the forces developed by the engine
A
Crankshaft
22
Q
4 Main parts of a crankshaft
A
Main journal, crankpin, crank cheek and counterweights and dampers
23
Q
The part of the crankshaft that is supported by and rotates in the main bearing
A
Main journal
24
Q
It is also called connecting-rod bearing journal
A
Crankpin
25
The crankshaft will rotate when a force is applied to the ________ in any direction other than parallel to a line directly through the center line of the crankshaft
Crankpin
26
Sometimes called the crank arm, is the part of the crankshaft which connects the crankpin to the main journal
Crank cheek
27
It supports a counterweight used to balance the crankshaft and it is usually provide with drilled oil passages
Crank cheek
28
It provides static balance for a crankshaft
Counterweight
29
To relieve the whip and vibration caused by the rotation of the crankshaft
Dynamic dampers
30
It is the link which transmit forces between the piston and the crankshaft of an engine
Connecting rod
31
The end of the rod which connects to the crankshaft and also called as crankpin end
Large end
32
The end which connects to the piston pin and also called as piston-pin end
Small end
33
A cylindrical member which moves back and forth within a steel cylinder
Piston
34
Two types of piston rings
Compression rings and oil rings
35
The purpose of this ring is to prevent the escape of combustion gases past the piston during engine operation
Compression rings
36
The purpose of this ring is to control the quantity of lubricant supply to the cylinder walls and to prevent the oil from passing into the combustion chamber
Oil rings
37
How many oil control ring is on a piston
One
38
Sometimes called a wrist pin
Piston pins
39
It joins the piston to the connecting rod
Piston pins
40
The piston pin used in a modern aircraft engines is the __________
Full-floating type
41
It is an internal combustion engine converts the chemical heat energy of the fuel to mechanical energy and transmits it through piston and connecting rods to the rotating crankshaft
Cylinder
42
The cylinder used in a air cooled engine is the __________
Overhead valve type
43
7 components of a cylinder
Cylinder barrel
cylinder head
valve guides
valve rocker arm supports
Valve seats
spark plug bushings
cooling fins
44
Provide a place for combustion of the fuel and air mixture and to give the cylinder more heat conductivity for adequate cooling
Cylinder head
45
Provides mountain pads for the accessory units
Accessory section
46
It also serves as part of the lubrication system
Accessory case
47
A significant feature of the __________ is that separate sections are devoted to each function and all functions are performed simultaneously without interruption
Gas turbine engine
48
Four types of gas turbine engines
Turbojet, turboprop, turbofan and turboshaft
49
It is located at the front of the compressor
Air inlet
50
It must have a clean aerodynamic design to ensure a smooth evenly distributed air flow into the engine
Inlet
51
Its primary function is to supply air in sufficient quantity to satisfy the requirements of the combustion burners
Compressor section
52
Its secondary function is to supply bleed air for various purposes in the engine and aircraft
Compressor section
53
The ______ is taken from any of the various pressure stages of the compressor
Bleed-air
54
Types of compressors
Centrifugal flow compressors and axial flow compressor
55
This type of compressor consists of an impeller or rotor, a diffuser or stator and a compressor manifold
Centrifugal flow compressor
56
This term means that the air is compressed by centrifugal force
Centrifugal
57
This compressor operate by taking in outside air near the hub and rotating it by means of an impeller
Centrifugal compressor
58
The air flows axially that is, in a relatively straight path in line with the axis of the engine
Axial flow compressor
59
It consists of two elements: a rotating member called the rotor and the stator, which consists of rows of stationary blades
Axial flow compressor
60
Two common types of action flow configurations
Single spool or solid spool and the split spool or dual spool
61
It houses the combustion process which raises the temperature of the air passing through the engine
Combustion section
62
Primary function is to burn the fuel and air mixture, thereby adding heat energy to the air
Combustion section
63
Three types of combustion chambers
Can type, can-annular type and annular type
64
This type of combustion chamber is consist of an outer shell and a removable liner with openings to permit compressor discharge air to enter from the outer chamber
Can type combustion chamber
65
This combustion chamber has characteristics of both the annular and can types
Can annular type combustion chamber
66
This combustion chamber operates at a high pressure level, aiding efficient combustion at reduced power and high altitudes
Can annular combustion chamber
67
This type of combustion chamber makes the most efficient use of the available space
Annular type combustion chamber
68
The function of this section is to extract kinetic energy from the high-velocity gases leaving the combustion section of the engine
Turbine section
69
The function of this section is it must direct the flow of hot gases rearward in such a manner as to prevent turbulence and at the same time impart a high final or exit velocity to the gases
Exhaust section
70
Two types of exhaust nozzle designs
Converging design for subsonic gas velocities and the converging-diverging design for supersonic gas velocities
71
These instruments are designed to constantly measure operating parameters relating to the aircraft's engine
Engine instruments
72
It is an instrument that indicates the speed of the crankshaft of a reciprocating engine
Tachometer or tach
73
Used to monitor engine power and to ensure the engine is operated within certified limits
Tachometer
74
Tachometer color codes
Green - operating range
Yellow - caution range
Red - maximum limit
75
It measures the cylinder head temperature of an engine
Cylinder head temperature gauge
76
It is also shows the effectiveness of the engine cooling system
Cylinder head temperature gauge
77
Extremely high cylinder head temperature means _______
Engine overload
78
A measurement of the temperature of the exhaust gases at the exhaust manifold
Exhaust gas temperature gauge
79
It can be used as a basis for regulating the fuel and air mixture entering the engine
Exhaust gas temperature gauge
80
It indicates an engine's fuel use in real time
Fuel flow meter
81
This can be useful to the pilot for ascertaining engine performance and for flight planning calculations
Fuel flow meter
82
This indicates oil pressure and temperature
Oil gauge
83
This instrument is one of the most important instruments when it comes to monitoring the engine
Oil gauge
84
The operating range of oil gauge
180°F to 190°F
85
Reading should adjust to the oil warming up to ___ minutes
15
86
It is the step-by-step procedure used to determine the cause of a given fault and then select the best and quickest solution
Troubleshooting
87
Six troubleshooting process
Symptom recognition
symptom elaboration
listing of probable faulty functions
localizing the fault
isolating the fault to a component
failure analysis
88
The prerequisites for troubleshooting are to be familiar with the normal engine condition and to be able to recognize when an engine is not operating properly
Symptom recognition
89
It is the next logical step once a fault or malfunction has been detected
Symptom elaboration
90
Test equipment, built in or external help the technician to evaluate the performance of the engine and its components
Symptom elaboration
91
When the technician has located all the symptoms of the malfunction or fault, the third step is to list, either mentally or on paper, the possible causes
Listing of probable faulty functions
92
It is an attempt to determine which functional system of the engine is actually creating the problem
Localizing the fault
93
Once the malfunction is isolated to one system, additional testing is done to isolate the fault to a specific component. The technician often uses test equipment to measure or indicate the correct outputs for various system components
Isolating the fault to a component
94
Once the fault can be traced to a specific component or components, an attempt should be made to determine the cause of the failure
Failure analysis
