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MB4 > Prime Movers- Internal Combustion Engines > Flashcards

Prime Movers- Internal Combustion Engines Flashcards

1
Q

The connecting rod is the link between the _____ and the _____?

A

Wrist pin and crankshaft

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2
Q

Timing gears link the?

A

Camshaft and crankshaft

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3
Q

An engine is a mechanical device that converts _____ to _____

A

Chemical energy to mechanical energy

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4
Q

The stroke of an engine is?

A

Movement of the piston from TDC to BDC

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5
Q

Clearance volume is?

A

The volume remaining above the piston when it is at TDC

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6
Q

Integral engines are?

A

Are built with the load as part of the engine

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7
Q

The four strokes of a 4 stroke engine in order are?

A

ICPE. Intake, Compression, Power, Exhaust

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8
Q

Industrial engines with removable liners most commonly have which type?

A

Wet liners

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9
Q

Liners that are within specification can be repaired with?

A

Ball deglazers and hone

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10
Q

Compression rings are activated by?

A

Compression and combustion gasses

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11
Q

The highest rate of wear on an industrial engine occurs?

A

On start up

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12
Q

Supercharging is the process of?

A

Increasing the mass of air in the cylinders to above atmospheric pressure

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13
Q

Electronic ignition systems?

A

Use electronic switches to open and close primary circuits

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14
Q

Aluminum pistons are fitted tighter than cast irons pistons

A

False

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15
Q

Worn or scored cylinder liners affect engine performance and oil consumption, and lead to increase crankcase pressure. (True or False)

A

True

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16
Q

The flywheel is used to stabilize speed fluctuations and store power to carry the engine to the next stroke? (True or false)

A

True

17
Q

The most common cause of bearing failure?

A

Loss of lubrication

18
Q

Full flow filtration occurs when?

A

All of the oil flows through an oil filter

19
Q

The larger the engine the greater the amount of oil consumption

A

True

20
Q

Crankcase ventilation is necessary to remove?

A

Blowby and water vapor

21
Q

Water pumps are?

A

Centrifugal pumps

22
Q

The speed ratio of the camshaft to the crankshaft in the 4 stroke engine?

A

1/2 the crank speed

23
Q

The mass an industrial engine foundation should be?

A

2.5 times the complete engine

24
Q

Compression ignition (CI) engines typically have compression ratios of?

A

18:1

25
Q

Naturally aspirated engines use _____ to provide air to the cylinders?

A

Piston movement, low pressure area

26
Q

The efficiency loss of a torque multiplier is?

A

10%

27
Q

The function of piston rings are?

A
  • provide a dynamic seal between cylinder and piston
  • prevent combustion gasses from entering crankcase.
  • cool the piston by transferring the heat to cylinder walls
28
Q

Most connecting rods are shaped like I Beams?

A

True

29
Q

The bolt stretch is the most accurate method of tightening rod bolts?

A

True

30
Q

Most internal combustion engines produce what amount of usable horsepower?

A

25 to 35%

31
Q

Turbochargers can rotate at over 100,000 rpm and are powered by what method?

A

Exhaust gasses

32
Q

What is the usual range of voltage provided to the spark plug in SI engines?

A

15000 to 60000

33
Q

Diesel fuel has more heat value than gasoline?

A

True

34
Q

Pressurized fuel lines in diesel engines have pressures in which range?

A

1000 to 5000

35
Q

When installing sole plates on new engine installations the chocks should be placed?

A

At the engine hold down bolts

36
Q

The preferred choice for air filters on an industrial engine installation are?

A

Paper type

37
Q

Which type of the following will cause high oil consumption?

A

Worn piston rings

38
Q

What does the term Bore refer to?

A

Cylinder diameter

MB4 (5 decks)

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