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64 Study > Engineering > Flashcards

Engineering Flashcards

1
Q

How long to allow engines to cool prior to shut down?

A

At least 3 minutes

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2
Q

Backflush max RPM

A

1000 no more than 30 seconds

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3
Q

Normal MDE oil pressure

A

116-131 psi

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4
Q

Normal MDE water temp

A

176-185°F

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5
Q

Normal R/G pressure engaged

A

260-304 psi

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6
Q

Normal R/G pressure disengaged

A

50-90 psi

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7
Q

Normal engine RPM range

A

2300-2500

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8
Q

Disabling MDE oil pressure

A

<81 psi

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9
Q

Disabling MDE water temp

A

<104°F and >208°F

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10
Q

Major MDE water temp

A

190-198°F

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11
Q

Restrictive MDE water temp

A

199-207°F

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12
Q

Disabling R/G pressure engaged

A

<230 psi and >310 psi

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13
Q

Restrictive MDE RPM

A

<2300

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14
Q

Normal engine RPM

A

2450 RPM

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15
Q

Disabling surge

A

over 50 RPM

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16
Q

Disabling F/O dilution

A

5% or above

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17
Q

Hot surface

A

over 400°F

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18
Q

Disabling F/O leak

A

If on a hot surface

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19
Q

Restrictive F/O leak

A

One drop within 10 minutes

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20
Q

Restrictive J/W, R/W, L/O, Hydraulic fluid, or gear oil leak

A

More than 15 drops per minute

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21
Q

What does the engine designation mean?

A

10 cylinder
V configuration
2000 series
Model 92

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22
Q

Rotation of engine

A

Counterclockwise from rear of engine

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23
Q

Horsepower

A

1360

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24
Q

Cruising speed

A

21 kts @ 2150 RPM

25
Max speed
30+ @ 2450 RPM
26
Engine oil
21.4 gallons 15W40
27
Jacket water capacity
30.1 gallons
28
Normal oil PSI
116-131 cruising | 36 @ idle
29
Disabling oil PSI @ cruising
81 PSI
30
Max RPM operating on one strainer
1900
31
Crossover valve purpose
Allow both MDEs to operate on a single strainer
32
MDE heat exchanger type
Plate cooler
33
Thermostats temps
1st and 2nd opens at 167°F | 3rd open at 174°F
34
Plate cooler is made from what?
Titanium
35
What is the generator engine?
Diesel engine: Lugger M20CRW2.2
36
Generator horsepower
32
37
Generator # of cylinders
4
38
Generator oil
2.1 gallons 15W40
39
Generator power provided
20 kW | 120v/240v
40
Transformer purpose
Isolate the boats VAC systems from the shore power lines for safety and corrosion control purposes
41
What does the transformer have on the output line?
100 amp circuit breaker
42
12v battery charger location
Engine room aft bulkhead above exhaust stbd side
43
24v battery charger location
Engine room aft bulkhead above exhaust port side
44
Normal fuel load
1200-1300 gallons
45
Primary fuel filter rating
10 micron
46
R/G oil
5.5 gallons 15W40
47
Jet drive HPU fluid capacity
.4 liters
48
Jet drive bearing oil capacity
2 liters
49
Air compressor max psi
150
50
Collar relief valve
Opens at 1.3 to 1.5 psi | Closes at 1 psi
51
Bilge pump activation level
2.5”
52
Bilge pump deactivation level
1.5”
53
What is FM-200?
Heptafluoropropane
54
At high temps, FM-200 will decompose and produce ___
Hydrogen fluoride
55
FM-200 capacity
47.5 lbs per cylinder = 95 lbs total
56
What temp will trigger the FM-200?
175°F
57
When will the heat detectors activate?
190°F | Heat rise greater than 12°/min
58
Superstructure material
5083 marine grade aluminum

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