Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

2nd sem midterms > Amt 124 for quiz only > Flashcards

Amt 124 for quiz only Flashcards

1
Q

basic major components of the reciprocating Engine

A

crankcase, Cylinders, Pistons, Connecting Rods, Valves, Spark Plugs, Crankshaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

One of the valves is in a passage leading from the?

A

Induction System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Inside each cylinder is a movable —– connected to a —— by a ——-

A

Piston, connectod to a crankshaft by a connecting rod.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

the other is in a passage leading to the???

A

Exhaust System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

to draw fuel and air into the cylinder

A

intake valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Its role is to let the exhaust gases out,

A

Exhaust Valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

moving within the cylinders, forms one of the walls of the combustion chamber.
CYLINDRICAL PLUNGER THAT MOVES UP AND DOWN

A

Piston

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

it Forms a link between the piston and the crankshaft.

A

Connecting Rod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

it is part of the chamber where fuel is compressed and burned.

A

Cylinder.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

-FOUNDATION OF A RECIPROCATING ENGINE

A

CrankCase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

-PROVIDES TIGHT ENCLOSURE FOR THE LUBRICATING OIL

A

CrankCase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

-CONTAINS THE ENGINE’S INTEGRAL PARTS

A

CrankCase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

-MOUNTING SURFACE FOR THE ENGINE CYLINDERS AND EXTERNAL ACCESSORIES

A

CrankCase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

-EXTREMELY RIGID, LIGHT AND STRONG
CAST OR FORGED ALUMINUM ALLOY

A

CrankCase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

BACKBONE OF RECIPROCATING ENGINE

A

Crank Shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

MAIN PURPOSE IS TO TRANSFORM THE RECIPROCATING MOTION OF THE PISTON AND CONNECTING ROD INTO ROTARY MOTION

A

Crank Shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

FORGED FROM A STRONG ALLOY SUCH AS CHROMIUM-NICKEL MOLYBDENUM STEEL

A

Crank Shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

CONSIST OF A MAIN BEARING JOURNAL, ONE OR MORE CRANKPINS, AND SEVERAL CRANK CHEEKS

A

Crank Shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Crank Case is typically made from?

A

cast or forged aluminum alloy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

CrankShaft is typically made from?

A

chromium-nickel
Molybdenum Steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Parts of crankshaft

A

Main bearing journals, crankpins, crank cheeks.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

, repre­sent the centerline of a crankshaft and support the crankshaft as it rotates in the main bearings. All crankshafts require at least two main journals to support the crankshaft, absorb the operational loads, and transmit stress from the crankshaft to the crankcase.

A

Main bearing Journals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

serve as attachment points for the connecting rods. This offset design means that any force applied to a ———— in a direction other than parallel to the crankshaft centerline causes the crankshaft to

A

CrankPins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

are required to connect the crankpin to the crankshaft.

A

Crank Cheeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

THE LINK WHICH TRANSMITS THE FORCE EXERTED ON A PISTON TO A CRANKSHAFT

A

Connecting Rod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Connecting Rod are typically made from?

A

Forged Druable Steel
Alloy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ONE END OF A CONNECTING ROD CONNECTS TO THE CRANKSHAFT IS CALLED THE ——-, WHILE THE OTHER END CONNECTS TO THE PISTON IS CALLED———-

A

Crankpin End
Piston End

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what are the four types of connecting Rod.

A

Plain type, Master and articulated rod type, Fork and blade Type, Split type

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The piston’s top surface is called the ——- and is directly exposed to the heat of combus­tion.

A

Piston Head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

are used in opposed and in­line engines.

17
Q

The piston end of a plain connecting rod is fitted with a ——— to accommodate the piston pin.

A

Bronze Bushing

17
Q

PRIMARY FUNCTIONS; DRAW FUEL AND AIR INTO A CYLINDER, COMPRESS THE GASES, AND PURGE BURNED EXHAUST GASES FROM THE CYLINDER
SECOND FUNCTION; TRANSMIT THE FORCE PRODUCED BY COMBUSTION TO THE CRANKSHAFT

18
Q

is an enlarged area inside the piston that provides additional bearing area for a piston pin.

A

Piston Pin Boss

18
Q

Five parts of piston

A

Piston head, Ring groves, Piston Pin Boss, Piston Skirt, piston pin

18
Q

Pistons are usually amde from?

A

aluminum Alloy

18
Q

are cut into a piston’s outside surface to hold a set of piston rings.

A

Ring Grooves

19
Q

which passes through the piston pin boss to attach the piston to a connecting rod.

A

Piston Pin

20
Q

To help align a piston in a cylinder, the piston base is extended to form the——-

A

PIston Skirt

21
Q

Piston Head Designs

A

Flat head,
Recessed Head
Concave Head
Dome Head

22
Q

They prevent leakage of gas pres­sure from the combustion chamber, reduce oil seepage into the combustion chamber, and transfer heat from the piston to the cylinder walls.

A

Piston Rings

22
Q

The point where a piston ring is split is called the

A

Piston Ring Gap

23
Q

types of piston ring

A

butt join
Angle Joint
Step Joint

23
Q

prevent gas from escaping past the piston during engine operation and are placed in the ring grooves immediately below the piston head. The number of compression rings used on each piston is determined by the type of engine and its design. However, most aircraft engines typically use two or three compression rings on each piston

A

Compression Rings

24
Q

control the amount of oil that is applied to the cylinder walls as well as prevent oil from enter­ing the combustion chamber. The two types of oil rings that are found on most engines are

25
Q

are placed in the grooves immediately below the com­pression rings. Pistons may have one or more oil control rings and, depending on the type of piston, as many as two rings can be installed in a single ring groove.

A

Oil Control RIngs

26
Q

The primary purpose of ——- is to regulate the thickness of the oil film on the cylinder wall. To allow an oil control ring to remove excess oil and return it to the crankcase, small holes are drilled in the piston ring grooves, or ring lands.

A

Oil Control Rings

47
Q

first ring types used

A

Oil control rings

48
Q

Second type of rings

A

Oil scraper rings

49
Q

other term for oil scraper ring

A

oil wiper ring

50
Q

joins the piston to the connecting rod. A typical piston pin is machined in the form of a tube from a nickel-steel alloy forging that is case-hardened. Piston pins are sometimes called wrist pins

A

Piston Pin

51
Q

Piston pins may be ————

A

stationary, semi floating, or full-floating.

52
Q

are held tightly in place by a set screw that pre­vents movement.

A

Stationary Piston Pins

53
Q

on the other hand, are retained stationary in the connect­ing rod by a set clamp that engages a slot in the pin.

A

Semi Floating Piston pins

54
Q

PROVIDES A COMBUSTION CHAMBER WHERE THE BURNING AND EXPANSION OF GASES TAKES PLACE TO PRODUCE POWER

54
Q

are free to rotate in both the connecting rod and the piston, and are used in most modern aircraft engines.

A

Full-floating piston pins

55
Q

HOUSES THE PISTON AND CONNECTING ROD ASSEMBLY AS WELL AS THE VALVES AND SPARK PLUGS

56
Q

STRONG ENOUGH TO WITHSTAND THE INTERNAL PRESSURE DEVELOPED DURING ENGINE OPERATION YET BE LIGHTWEIGHT TO MINIMIZE ENGINE WEIGHT

56
Q

CONSISTS OF A CYLINDER HEAD, CYLINDER BARREL, MOUNTING FLANGE, CYLINDER SKIRT, COOLING FINS AND VALVE ASSEMBLY

57
Q

parts of cylinder

A

intake and exhaust valve ports, spark plugs, valve actuating mechanisms,

57
Q

are cast or machined onto the outside of a cylinder head and provide an effective means of transferring heat from the cylinder head to the sur­rounding air.

A

Cooling Fins

58
Q

are machined from a forged blank, with a skirt that projects into the crankcase and a mounting flange that is used to attach the cylinder to the crankcase.

A

Cylinder barrels

59
Q

However, some cylinder bores are machined with a slight taper. In other words, the diameter of the top por­tion of the barrel is slightly smaller than the diame­ter at the cylinder skirt. This is called a

A

choke bore cylinder

60
Q

REGULATE THE FLOW OF GASES INTO AND OUT OF A CYLINDER BY OPENING AND CLOSING AT PREDETERMINED TIMES IN THE COMBUSTION PROCESS

61
Q

CONTROLS THE AMOUNT OF FUEL/AIR MIXTURE

A

Intake valve

61
Q

AT LEAST ONE INTAKE VALVE AND ONE EXHAUST VALVE

62
Q

FOUR BASIC DESIGNS OF VALVES

A

Flat head, Semi tulip head, Tulip Head, Mushroom head

62
Q

ALLOWS THE EXHAUST GASES TO EXIT THE CYLINDER

A

Exhaust Valve

63
Q

is that portion of the valve that cre­ates a seal at the intake and exhaust ports.

A

Valve face

64
Q

acts as a pilot to keep the valve head properly aligned as it moves back and forth

A

Valve Stem

65
Q

parts of valve

A

valve tip
Valve spring keeper retention
Valve Stem
Transition Region
Valve Head
Valve seat
Valve face

65
Q

is a circular ring of hardened metal that provides a uniform sealing surface for the valve face. A typical valve seat is made of either bronze or steel and machined to an oversize fit.

A

Valve Seat

66
Q

are helical-coiled springs that are installed in the cylinder head and provide the force that holds the valve face firmly against the valve seat.

A

valve springs

67
Q

IT OPENS AND CLOSES THE INLET AND EXHAUST VALVES OF THE ENGINE AT THE RIGHT TIME, WITH THE EXACT STROKE AND IN A PRECISELY DEFINED SEQUENCE

2nd sem midterms (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions