3508b Mui Eui Eng Contr Large Tractors
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Transcript of 3508b Mui Eui Eng Contr Large Tractors
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Service TrainingMALAGA
Large Track Type Tractors
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
ENGINE OIL COOLER
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
FUEL PRIMING PUMP SECONDARY FUEL FILTERS
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P a g e:
CYLINDER HEADSMUI AND EUI
MUI EUI
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P a g e:
PRIMARYFILTER
TRANSFERPUMP
SECONDARYFILTER
FUEL TANK
ECM
FUEL TANK
FUEL
PRESSUREREGULATOR
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P a g e:
FUELTANK
PRIMARY
FUEL
FILTER
SECONDARYFUEL FILTERS
FUEL
PRESSURE
REGULATOR
FUEL
TRANSFER
PUMPECM
CYLINDERHEAD
PRIMING PUMP SUPPLY
DIFFERENTIAL
PRESSURE
SWITCH
RETURN FUEL
3508B FUEL SUPPLY CIRCUIT
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P a g e:
GROUNDBOLT
15 AMPBREAKER
KEY START
SWITCH
24 V
SPEED/TIMINGSENSOR
MACHINEINTERFACE
CONNECTOR
COOLANTTEMPERATURE
SENSOR
8/12/16INJECTORS
GROUND BOLT
P26 T/C CONNECTOR
J2
J1
ECM
UNFILTERED OILPRESSURE
SENSOR
AFTERCOOLERTEMPERATURE
SENSOR
CRANKCASEPRESSURE
SENSOR
RIGHTTURBOCHARGERINLET PRESSURE
SENSOR
LOW OILLEVEL
SWITCH
ATMOSPHERICPRESSURE
SENSOR
FUEL FILTERDIFFERENTIAL
PRESSURE SWITCH
TURBOCHARGEROUTLET
PRESSURE SENSOR
COOLANTFLOW
SWITCH
FILTERED OILPRESSURE
SENSOR
LEFTTURBOCHARGER
EXHAUSTTEMPERATURE
SENSOR
RIGHTTURBOCHARGER
EXHAUSTTEMPERATURE
SENSOR
LEFTTURBOCHARGER
INLET PRESSURESENSOR
THROTTLEPOSITIONSENSOR
THROTTLEBACK-UPSWITCH
USER DEFINED SHUTDOWN
GROUNDLEVEL
SHUTDOWNSWITCH
BATTERY
ENGINE FANCONTROLSOLENOID
A/C ONSWITCH
FAN PRESSURE SENSOR
+ BATTERY
RELAYCYLINDER
ENGINE
ETHER START VALVE
STARTINGAID SWITCH
BASIC ENGINE BLOCK DIAGRAM APPLICATION BLOCK DIAGRAM
ELECTRONIC SERVICETOOL CONNECTOR
DISCONNECTSWITCH
15 AMPBREAKER
COOLANTTEMPERATURE
SENSOR
RELAY
CAT Data Link
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P a g e:
ENGINE COOLANT
TEMPERATURE SENSOR
ENGINE OILPRESSURE SENSOR
+V ANALOGANALOG RETURN
SIGNAL
+V ANALOGANALOG RETURNSIGNAL
TURBO OUTLET
PRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
RIGHT TURBO INLET PRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
ATMOSPHERICPRESSURE SENSOR
+V ANALOG
ANALOG RETURNSIGNAL
LEFT TURBO INLETPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
3630
+V ANALOGANALOG RETURNSIGNAL
CRANKCASEPRESSURE SENSOR
+V ANALOGANALOG RETURNSIGNAL
FAN PUMPPRESSURE SENSOR
ABC
ABC
ABC
A
BC
ABC
ABC
ABC
AB
C
5 ± 0.5 VOLTS
+V ANALOG SUPPLYANALOG RETURN
ECM
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P a g e:
+ V DIGITAL SUPPLY- V DIGITAL RETURN
2935
P1 J1
ABC
J31 P31
+V DIGITALDIGITAL RETURN
SIGNAL
RIGHT EXHAUST TEMPERATURE SENSOR
ABC
J35 P35
THROTTLEPOSITION SENSOR
+V DIGITALDIGITAL RETURN
SIGNAL
8 ± 0.5 VOLTS
ABC
J30 P30
+V DIGITALDIGITAL RETURN
SIGNAL
LEFT EXHAUST
TEMPERATURE SENSOR
ABC
J84 P84
+V DIGITALDIGITAL RETURN
SIGNAL
SPEED TIMING SENSOR
ECM
+ 12V SPD//TIM SNSR SUPPLY32
P1 J1 ENGINE ECM
ENG SPEED/TIMING SNSR38
29 DIGITAL RETURN
12± 1 VOLTS
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
ENGINE DERATES
ALTITUDE COMPENSATION
-DERATES APPROX 1% PER kPa TO A MAX OF 24% (if above 10000
feet)
AIR INLET RESTRICTION
- CALCULATES DIFFERENCE BETWEEN ATMOSPHERIC
PRESSURE SENSOR AND TURBO INLET PRESSURE
-FUEL LIMITED BY 1% IF RESTRICTION 25 INCHES WATER
(6,5kPa)
MAXIMUM DERATE 20%
EXHAUST TEMPERATURE DERATE
-- TORQUE MAP REDUCED BY 2% WHEN TURBINE (LEFT ORRIGHT) IS ABOVE 750˚C FOR 60 SECS
- MAXIMUM DERATE 20%
DATA LINK TRANSMISSION ERROR DERATE
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P a g e:
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
8,210
8,920
9,630
10,340
11,050
11,760
12,470
13,890
14,600
15,310
16,020
16,730
17,440
13,180
7,500
72%
ACCORDING TO ATMOSPHERIC PRESSURE
ATMOSPHERIC PRESSURE IN kPa
P E R C E N T O F F
U L L L O A D P O W E R
A L T I T U
D E I N F E E T
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P a g e:
O I L
P R E S S U R E I N k P a
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800
60
80
100
120
140
160
180
200
220
240
260
280
300
ENGINE RPM
1900
320
340
8.7
11.6
14.5
17.4
20.3
23.2
26.1
29
31.9
34.8
37.7
40.6
43.5
46.4
49.3
O I L
P R E S S U R E I N P
S I
kPa x 0.145 = PSI
2000
50
40
44
94LOW OIL PRESSURE REGION
300
250
T R I P
L I N E R
E S E T
L I N E
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P a g e:
PART No.
TRADE MARK
SERIAL No.
TRIM CODE SERIAL No. BAR CODE
E -T RI M
C ODE
S
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
ECM automaticalty stop injectionto non- firing injectors until theengine warm up based on water temp.
ECM cutout each cylinder for a
brief amount of time to see if thatinjector is contributing to power.If not, injection will be stop to thatcylinder, ECM will retest any cutoutcylinder every so often.
COLD START LOGIC
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P a g e:
ENGINE ECM FEATURES
• Throttle Lock
• Fan Control
• Ether Injection System
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P a g e:
F706-PU
ECMP1 J1
13192927142024
Throttle Lock RH Brake (NO)Throttle Lock RH Brake (NC)Digital ReturnThrottle Lock ON LampThrottle Lock Set/DeclerateThrottle Lock Resume/AccelerateThrottle Lock ON/OFF
998-BR
RIGHT BRAKE PEDAL SWITCH
F721-GYF722-OR
THROTTLELOCK LAMP
J3 P3
2113-OR BATT+
F717-YLF718-BU
F719-BR
998-BR
998-BR
998-BR
998-BR
998-BR
THROTTLE LOCKSET/DECLERATION SW
THROTTLE LOCKRESUME/ACCLERATION SW
THROTTLE LOCK SW
THROTTLE LOCK CIRCUIT
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
THROTTLE LOCK CIRCUIT
SIMILAR TO CRUISE CONTROL
USES ENGINE SPEED AS REFERENCE (Not vehicle speed)
COMPONENTS
- THROTTLE LOCK SWITCH
- Sets throttle lock ON/OFF
- THROTTLE LOCK LAMP
- SET/DECELERATION SWITCH
-Sets desired speed
-Speed loweredby 20 rpm every time switch pressed
-Speed lowered by 50 rpm / sec holding switch down
- RESUME / ACCELERATION SWITCH
--Speed increased by 20 rpm every time switch pressed
-Speed increased by 50 rpm / sec holding switch down
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
995-BU
ENGINE ECM
P2 J2
1907
HYDRAULIC FANPWM DRIVE AND SOL RETURN
P86 J86
21
HYDRAULIC FAN
SOLENOID VALVE
E799-BR
F700-BU
997OR993BRCOOLANT TEMP
SENSOR3009
36 +5V ANALOG SUPPLYANALOG SENSOR RETURNCOOLANT TEMP SENSOR
HYDRAULIC ENGINE FAN CONTROL CIRCUIT
IMPLEMENT OILTEMP SENSOR
I/F 1 DATA LINK
SOLENOID VALVE CONTROLS OIL SUPPLY TO MOTOR
- INCREASES OR DECREASES FAN SPEED
- PROPORTIONAL VALVE (RECEIVES PWM SIGNAL)
INPUT COOLANT TEMP SENSOR
- ABOVE 98 °C FAN SPEED MAXIMUM
- BELOW 95° C FAN SPEED MINIMUM
-FAN SPEED CHANGES AS HYD PUMP VARIES WITH ENGINE SPEED
IMPUT IMPLEMENT OIL TEMP SENSOR
- DESIRED TEMPERATURE 70˚C
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CHAPTER : ENGINE CONTROL 3508B
Large Track Type Tractors
28
29
19
40
CONTROL GROUP(3408E/E3412E)
ETHER SWITCH
308-YL
200-BK
P1 J1
ETHER SW LAMP
DIGITAL RETURN
ETHER REQUEST
ETHER CONTROL
P2 J2
F708-YL
998-BR
721-GY
710-BR
J3 P3
23 93921
RELAY
12
+24V
+310-PK
200-BKP37 J37
ETHER
START VALVETO ENGINE
FROMCYLINDER
ETHER INJECTION SYSTEM
SPEED TIMINGSENSOR
COOLANTTEMP SENSOR
ETHER INJECTION SYSTEM
- CONTROLLED BY ENGINE ECM
- INPUTS FROM SPEED/TIMING AND COOLANT TEMP SENSOR
- FLOW DETERMINED BY ENGINE SPEED AND TEMPERATURE
- ENABLED IF COOLANT TEMP < 10°C & SPEED BETWEEN 50 & 1900
RPM
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