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parts second year > engine 201 > Flashcards

engine 201 Flashcards

1
Q

What part supports the crankshaft in the cylinder block

A

main bearings

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2
Q

what part changes rotary motion to reciprocating motion

A

camshaft

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3
Q

How would a cam ground piston be measured

A

skirt at right angles to the wrist pin

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4
Q

What engine component is made of I beam construction

A

connecting rods

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5
Q

What forces do main bearings counteract

A

axial

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6
Q

What is the main purpose for piston ring end gap

A

allow clearance for ring expansion

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7
Q

On a vblock engine with SOHC how many camshafts would the engine have

A

2

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8
Q

What is the purpose of lugs and dowels

A

position bearing shells in bores

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9
Q

If a journal is ground what size bearing would you need

A

undersized

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10
Q

What component converts reciprocating motion into rotary motion

A

crankshaft

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11
Q

How many revolution does a 4 stroke engine make for one cycle

A

2

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12
Q

How is an engine sized

A

total displacement of all cylinders

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13
Q

What is the purpose of counterbalance weights

A

counterbalance inertial forces

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14
Q

What is the purpose of front and rear crankshaft seals

A

prevent oil from leaking out

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15
Q

What does horsepower measure

A

rate of doing work

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16
Q

What is the most common materiel used for Diesel engine cylinder heads

A

cast iron alloy

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17
Q

What component is eliminated with overhead camshafts

A

pushrods

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18
Q

What should be offered when selling serpentine belts

A

tensioning devices

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19
Q

What is responsible for keeping coolant flowing

A

water pump

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20
Q

what type of antifreeze is best suited for heavy duty diesel engines

A

propylene glycol

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21
Q

Where is performance in the donut

A

Top

22
Q

What does engine oil contain to combat oxidation, rust, or corrosion

A

inhibitors

23
Q

What determines the amount of filtration that a filter can provide

A

micron rating

24
Q

What are double walled pipes used to reduce

A

noise

25
Q

What are most exhaust system components made of

A

stainless steel

26
Q

What is the purpose of the pre-screener

A

remove chaff

27
Q

What type of air pump is a supercharger

A

positive displacement

28
Q

When does a turbo produce maximum boost

A

high engine speed

29
Q

What does octane rating measure

A

ability to resist detonation

30
Q

Where are octane improvers added to gasoline

A

slow down combustion

31
Q

What are main fuel lines typically made of

A

steel or nylon

32
Q

In a fuel ignition system, how are mechanical injectors opened

A

fuel pressure

33
Q

What is the primary function of the throttle body on a multi-port fuel injection system

A

control airflow to the intake manifold

34
Q

Where is the air mixed with fuel in a throttle body fuel injection system

A

intake manifold

35
Q

What type of fuel metering is used for in-line injection pumps on automotive systems

A

port and helix

36
Q

What does a governor control

A

idle and high idle speeds

37
Q

What re the 2 classifications of diesel fuel filters

A

primary and secondary

38
Q

What type of containers are used to store natural gas

A

steel, aluminum, composite

39
Q

Why is pressure so high in a CNG system

A

to store enough fuel for use

40
Q

What device admits crankcase gases into the intake manifold

A

pcv valve

41
Q

How are emission control standards regulated in North America

A

regionally

42
Q

What is the purpose of air injection system

A

oxidize HC and CO

43
Q

What is the purpose of a linear EGR valve

A

control flow of exhaust gases

44
Q

What is latent heat

A

Temperature at which state changes

45
Q

What is main function of an evaporator

A

Change refrigerant form a liquid to a vapour

46
Q

What metric unit is heat measured in

A

joules

47
Q

What component in an AC system creates air flow in the plenum

A

blower motor and fan

48
Q

R12-R134a

A

retrofitting

49
Q

What type of connectors are used in R134a to attach service gauges

A

quick connectors

50
Q

What type of device is used with an accumulator AC system

A

fixed orifice

51
Q

What are the 2 purposes of an AC system

A

clean and dehumidify

parts second year (4 decks)

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