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Block 3 > Oil Systems > Flashcards

Oil Systems Flashcards

1
Q

What does a lubrication system need to do?

A

*reduce friction
*cool
*clean
*absorb shock loads
Be compatible with latest exhaust aftertreatment systems

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2
Q

What does the American petroleum institute classify engine oils by?

A

It’s application

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3
Q

What are two distinct classifications of oil?

A

C-series compression ignited
S-series spark ignited

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4
Q

What classification of oil does today’s dpf equipped engines use

A

CJ-4

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5
Q

Crude oil (mineral oi) originates from where?

A

From the ground

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6
Q

What is base stock

A

The raw mineral processed from crude oil

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7
Q

What’s does winter rated oil mean

A

Means it’s viscosity rating is measured at 0°F (-18 °C)
Given suffix W

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8
Q

What do the society of automotive engineers do

A

Viscosity rating

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9
Q

What percentage of motor oils are base stock?

A

75-85%

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10
Q

What types of oil pumps are the most common?

A

Gerotor
External gear oil pump

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11
Q

What’s is normal oil pressure?

A

20-40 psi

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12
Q

What is minimum oil pressure

A

10 psi

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13
Q

What is high oil pressure

A

65-75 psi

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14
Q

What are the two types of oil coolers?

A

Plate and tube

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15
Q

What temp should engine oil never exceed?

A

250°f or 139°C

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16
Q

What does percentage of solids refer to?

A

Total amount of particles suspended in oil

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17
Q

When should you change oil?

A

Before dissolved solids rose above 5%

18
Q

What does TAN stand for?

A

Total acid number- the acidity of oil

19
Q

What does TBN stand for

A

Total base number- measurement of lubricants reserve alkalinity

20
Q

What is the recommended oil change interval calculated by?

A

Quantity of oil in oil pan by barrels of fuel burned

21
Q

What is the purpose of a base pan?

A

Store oil

22
Q

What are two types of oil circuits?

A

Full flow- any oil reaching engine components has passed through an oil filter

Supplemental partial flow- filters oil through a bypass filter and returns filtered oil to the sump. No oil passing through bypass fikter actually reaches engine components

23
Q

What is viscosity

A

An oils restance to flow

24
Q

What is viscosity index?

A

A measurement of the total amount of change in an oils viscosity due to temperature

25
Q

What do oil additives do

A

Improve original properties of base stock oil

26
Q

What is good oil level

A

Midrange between low and full mark

27
Q

What does the oil pressure regulating valve do?

A

Prevents excess oil pressure build up

28
Q

What does the oil suction tube screen do

A

Protects oil pump from debris

29
Q

What types of pumps are used

A

Positive displacement pumps

30
Q

What is proper procedure for pil sample

A

Operating temp
Mid stream
Clean

31
Q

How to test an oil cooler

A

Remove and pressurize with air and check for leaks

32
Q

What is the purpose of a piston nozzle jet

A

Cool and lubricate pistons components

33
Q

What causes areation

A

Heat

34
Q

What is cavitation

A

Collapse of tiny bubbles due to high temp

35
Q

What is a micron

A

A unit of measurement equal to 0.001 mm

36
Q

What is cold sludge caused by

A

Cold start up

37
Q

What is the term used to describe lube that surrounds and supports moving parts?

A

Hydrodynamic

38
Q

Low viscosity oil

A

Flows easier than high viscosity

39
Q

What is multigrade oil

A

A blend of different several oils with different viscosities

40
Q

What percentage of base stock is amde from polyalphaolefin

A

70%

41
Q

When oil is gray white or brown it’s usually a sign that has leaked into it

A

Coolant

42
Q

What’s Danny’s last name

A

Branton

Block 3 (10 decks)

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