MPDE, PROPULSION, AND RIDE CONTROL Flashcards Preview

EPF 101 > MPDE, PROPULSION, AND RIDE CONTROL > Flashcards

Flashcards in MPDE, PROPULSION, AND RIDE CONTROL Deck (24):
1

MAIN ENGINE MODEL AND RATING

4 X MTU 20V 8000 M71L
12203 (91OO KW) EACH

2

MAIN ENGINE CYLINDER ARRANGEMENT

A-BANK ON LEFT
B-BANK ON RIGHT
VIEWED FROM AFT
A-BANK 40 DEGREES TO B-BANK
KS END AFT
KGS END FWD

3

MAIN ENGINE RPM

450 RPM IDLE
1150 RPM OPERATING
80-120 RPM STARTING

4

MPDE TURBOCHARGERS

4 X PER MPDE
1-2 ONLINE FOR LOW DEMAND
4 ONLINE FOR HIGH DEMAND

5

MPDE CONTROL

NORMALLY CONTROLLED THROUGH IMCS
LOCALLY OPERATING PANEL DESIGNATED PRIMARY

6

MPDE LOCAL OPERATING PANELS

LOP'S AND MONITORING EXTENSION UNITS HAVE NORMAL AND ALTERNATE POWER
MPDE'S WILL NOT START W/O 24 VDC POWER
MEU'S PROVIDE REDUNDANT ENGINE MONITORING

7

MPDE START AIR

SUPPLIED AT 550 PSI
REDUCED TO 203-217 PSI
LOCATED ON KS END
24 VDC SOLENOID VALVE

8

MPDE COOLING SYSTEM

FRESHWATER JACKET COOLING
HEAT EXCHANGER RATED AT 6030 KW
HEAT EXCHANGER ALSO COOLS FUEL OIL RETURNED TO SERVICE TANKS
PREHEATER KEEPS JACKET WATER AT 104 F

9

MPDE RAW WATER COOLING PUMP

SUPPLIES:
MAIN REDUCTION GEARBOX
WATER JET HYDRAULIC POWER PACK
WATER JET THRUST BEARING LUBE OIL POWER PACK
SHAFT SEAL

10

REDUCTION GEAR

INTERNAL HYDRAULICALLY-ACTUATED MULTIPLE DISC CLUTCH
2.156:1 DRIVE RATION

11

REDUCTION GEAR LUBE OIL SYSTEM

USES SAE 30 IN COOLER TEMPERATURS
SAE 40 USED WHEN SUMP TEMPERATURE EXCEEDS 176 F (80 C)

12

REDUCTION GEAR COOLING

TOP-MOUNTED OIL COOLER COOLED BY MPDE SEAWATER SUPPLY
OIL TEMP REGULATED AT 122 TO 176 F (50 TO 60 C)
SEAWATER FLOW AT 79 TO 110 GPM (300 TO 500 LPM)

13

HIGH SPEED SHAFT

CARBON FIBER REINFORCED EPOXY
TRANSMIT POWER FROM MPDE'S TO REDUCTION GEARS
TWO SECTIONS FOR OUTBOARD ENGINES
ONE SECTION FOR INBOARD ENGINES

14

LOW SPEED SHAFT

GLASS FIBER REINFORCED EPOXY
TRANSMIT POWER FROM REDUCTION GEAR TO WATER JET THRUST BEARING

15

SHAFT BULKHEAD SEALS

AT FR 70 NEAR AFTER END OF HIGH SPEED SHAFT

16

SHAFT BEARINGS

LOCATED AT AFT END OF EACH ENGINE
OUTBOARD ENGINES HAVE ADDITIONAL BEARING BETWEEN TWO SHAFT SECTIONS

17

WATERJET CHARACTERISTICS

4 X WARTSILA WLD 1400 SR MODEL
+/- 3O DEG STEERING ANGLE
REVERSING PLATE
CONTROLLED BY THREE HYDRAULIC CYLINDERS

18

WATERJET THRUST BEARING

SUPPORTS INPUT SHAFT AND ABSORBS AXIAL THRUST OF IMPELLER
LUBRICATED BY GEAR-TYPE PUMP
15.8 GAL (60 L) LUBE OIL TANK

19

WATERJET THRUST BEARING LUBE OIL ALARMS

OIL PRESSURE ALARM AT 11.6 PSI (0.8 BAR)
CLOGGED FILTER SWITCH AT 43.5 PSI (3 BAR)
COOLER BYPASS LIFTS AT 43.5 PSI (3 BAR)
FILTER BYPASS ACTIVATES AT 50.8 PSI (3.5 BAR)
OIL PRESSURE BYPASS ACTIVATES AT 58 PSI (4 BAR)

20

WATERJET CORROSION PROTECTION

(10) ZINC ANODES ON EACH STATOR BOWL
(10) ZINC ANODES ON EACH JETAVATOR
ZINCS RATED FOR TWO YEARS AND INSPECTED AT 6M INTERVALS
ZINCS REPLACED WHEN 50% DEPLETED

21

HYDRAULIC POWER PACK

PROVIDES DIRECTIONAL CONTROL
HOLDS 62 GAL MOBI DTE 15M HYDRAULIC FLUID
COOLED BY SEAWATER COOLING SYSTEM
PRESSURE PUMP PTO-DRIVEN PUMP MOUNTED ON REDUCTION GEAR

22

RIDE CONTROL SYSTEM

2 X SINGLE CANTILEVERED FOILS FWD
2 X INTERCEPTOR BLADES AFT
CONTROL SYSTEM

23

SINGLE CANTILEVERED FOIL

MOUNTED TO INBOARD SIDE OF HULL NEAR FR 13
MOVED BY TWO HYDRAULIC ACTUATORS
FOIL ANGLE (DEG):
15 FOR < 15 KTS
10 FOR 15-25 KTS
8 FOR 25-30 KTS
5 FOR > 35 KTS

24

INTERCEPTOR BLADES

MOUNTED ON OUTER TRANSOM BELOW WATERJET OUTLETS
MOVED VERTICALLY WITHIN GUIDES BY 2 X CONNECTING RODS
17.5 FT IN LENGTH