@Perkins

Technical Data 4012-46TWG2A

4000 Series 4012-46TWG3A
Diesel Engine - ElectropaK
Basic technical data Cyclic irregularity
For engine/flywheel maximum:
Number of cylinders .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 12 -4012-46TWG2A @ 1500 rev/min.. ... ... ... ... ... ... ... ... ... .. 1752
Cylinder arrangement ... ... ... ... ... ... ... ... ... ... ... ... ... ... Vee 60
-4012-46TWG3A @ 1500 rev/min.. ... ... ... ... ... ... ... ... ... ... 1752
Cycle . ... ... ... ... ... ... ... ... ... ... ... ..4 stroke, compression ignition
Induction system ... ... ... ... ... ... ... ... ... ... ... ... ... ... turbocharged Ratings
Combustion system... ... ... ... ... ... ... ... ... ... ... ... . direct injection Steady state speed stability at constant load . ... ... ... ... .. 0,25%
Compression ratio . ... ... ... ... ... ... ... ... ... ... ... ... ... .13:1 nominal Electrical ratings are based on average alternator efficiency and are
Bore... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 160 mm for guidance only (0.8 power factor being used).
Stroke ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 190 mm
Cubic capacity... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 45482 litres Operating point
Direction of rotation ... ... ... ... ... Anti clockwise viewed on flywheel Engine speed ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1500 rev/min
Firing order ... ... ... ... ... ... ... 1A,6B,5A,2B,3A,4B,6A,1B,2A,5B.4A,3B Static injection timing . ... ... ... ... ... ... ... ... ... ... ... .spill timing 22
Cylinder 1 .. ... ... ... ... ... ... ... ... ... ... ... ... ... furthest from flywheel Cooling water exit temperature .. ... ... ... ... ... ... ... ... ... ... < 98 C
Note: Cylinders designated A are on the right hand side of the Performance
engine when viewed from the flywheel end. Note: All data based on operation to ISO 3046/1, BS 5514 and
Total weight of ElectropaK DIN 6271 standard reference conditions.
Engine - dry Estimated sound pressure level at 1 metre ... ... ... ... ... 111 dB(A)
-temperate. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 4440 kg Note: Noise levels represent highest recorded at 1500 rev/min
-tropical . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 4440 kg
For engines operating in ambient conditions other than the standard
ElectropaK - dry (1)
reference conditions stated below, a suitable de-rate must be
-temperate. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5220 kg
applied.
-tropical . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5283 kg
De-rate tables for increased ambient temperatures and / or altitude
ElectropaK - wet (1) (2)
are available, please contact Perkins Applications Department
-temperate. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5547 kg
-tropical . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5615 kg Test conditions
1. Includes fuel cooler. -air temperature.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...25 C
2. Includes engine lubricating oil and water jacket -barometric pressure .. ... ... ... ... ... ... ... ... ... ... ... ... ... ...100 kPa
-relative humidity ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 30%
Overall dimensions of ElectropaK
-air inlet restriction at maximum power (nominal)... ... ... ... 2,5 kPa
Height ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 2255 mm
-exhaust back pressure at maximum power (nominal)... ... 3,0 kPa
Length ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 3714 mm
-maximum fuel temperature (inlet pump) ... ... ... ... ... ... ... ...58 C
Width
For test conditions relevant to data on load acceptance, please refer
-temperate. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 1780 mm
to Cold start recommendations on page 22 of this document.
-tropical . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 1978 mm
Moment of inertia (mk)
Flywheel ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 9,57 kgm
Engine ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 9,73 kgm
General installation - 4012-46TWG2A (Temperate) 50 Hz @ 1500 rev/min
Type of operation and application
Designation Units
Base Prime Standby
Gross engine power kWb 884 1106 1217
Fan and battery charging alternator power kW 51
Net engine power kWm 833 1055 1166
Brake mean effective pressure (gross) kPa 1543 1930 21,24
Combustion air flow at ISO conditions m/min 90 102 109
Exhaust gas temperature (max) after turbo C 422
Exhaust gas flow (max) at atmospheric pressure m/min 180
Boost pressure ratio - 2,38 2,86 3,09
Mechanical efficiency % 88.0 90.2 91.0
Overall thermal efficiency (nett) % 39.46 39.81 39.66
Friction and pumping power losses kWm 120
Mean piston speed m/s 9,5
Engine coolant flow l/min 948
kVA 989 1253 1385
Typical GenSet electrical output (0.8pf)
kWe 791 1002 1108
Assumed alternator efficiency % 95

General installation - 4012-46TWG2A (Tropical) 50 Hz @ 1500 rev/min

Type of operation and application
Designation Units
Base Prime Standby
Gross engine power kWb 891 1113 1224
Fan and battery charging alternator power kW 58
Net engine power kWm 833 1055 1166
Brake mean effective pressure (gross) kPa 1555 1942 2136
Combustion air flow at ISO conditions m/min 90 103 109
Exhaust gas temperature (max) after turbo C 422
Exhaust gas flow (max) at atmospheric pressure m/min 180
Boost pressure ratio - 2,39 2,87 3,10
Mechanical efficiency % 88.1 90.3 91.1
Overall thermal efficiency (nett) % 39,5 39,8 39,6
Friction and pumping power losses kWm 120
Mean piston speed m/s 9,5
Engine coolant flow l/min 948
kVA 989 1253 1385
Typical GenSet electrical output (0.8pf)
kWe 791 1002 1108
Assumed alternator efficiency % 95

Notes:
All quoted gross engine powers include an allowance of 1.5% for installation variance
Not to be used for CHP design purposes (indicative figures only). Consult Perkins Engines Stafford Limited. Assumes complete
combustion.
General installation - 4012-46TWG3A (Temperate), 50 Hz @ 1500 rev/min
Type of operation and application
Designation Units
Base Prime Standby
Gross engine power kWb 960 1200 1314
Fan and battery charging alternator power kW 51
Net engine power kWm 909 1149 1263
Brake mean effective pressure (gross) kPa 1675 2094 2293
Combustion air flow at ISO conditions m/min 94 108 114
Exhaust gas temperature (max) after turbo C 474
Exhaust gas flow (max) at atmospheric pressure m/min 182
Boost pressure ratio - 2.55 3.05 3.28
Mechanical efficiency % 88.9 90.9 91.6
Overall thermal efficiency (nett) % 39.66 39.80 38.95
Friction and pumping power losses kWm 120
Mean piston speed m/s 9,5
Engine coolant flow l/min 948
kVA 1079 1364 1500
Typical GenSet electrical output (0.8pf)
kWe 864 1092 1200
Assumed alternator efficiency % 95

General installation - 4012-46TWG3A (Tropical), 50 Hz @ 1500 rev/min

Type of operation and application
Designation Units
Base Prime Standby
Gross engine power kWb 967 1207 1321
Fan and battery charging alternator power kW 58
Net engine power kWm 909 1149 1263
Brake mean effective pressure (gross) kPa 1688 2106 2305
Combustion air flow at ISO conditions m/min 94 108 115
Exhaust gas temperature (max) after turbo C 479
Exhaust gas flow (max) at atmospheric pressure m/min 182
Boost pressure ratio - 2.56 3.07 3.30
Mechanical efficiency % 89.0 91.0 91.7
Overall thermal efficiency (nett) % 39.67 39.75 38.92
Friction and pumping power losses kWm 120
Mean piston speed m/s 9,5
Engine coolant flow l/min 948
kVA 1079 1364 1500
Typical GenSet electrical output (0.8pf)
kWe 864 1092 1200
Assumed alternator efficiency % 95

Notes:
All quoted gross engine powers include an allowance of 1.5% for installation variance
Not to be used for CHP design purposes (indicative figures only). Consult Perkins Engines Stafford Limited. Assumes complete
combustion.

Rating definitions
Baseload power
Unlimited hours usage with an average load factor of 100% of the published baseload power rating.

Prime Power
Variable load. Unlimited hours usage with an average load factor of 80% of the published prime power rating over each 24 hr. period A
10% overload is available for 1 hour in every 12 hour of operation.

Standby power
Variable load. Limited to 500 hours annual usage up to 300 hours of which may be continuous running. No overload is permitted.

Emissions capability
All 4012-46TWG ratings are optimised to the best fuel consumption and do not comply to Harmonised International Regulation Emission
Limits. More information on these statements can be obtained by contacting the Applications Department at Perkins Engines Company
Limited.
Energy balance
4012-46TWG2A - Temperate 4012-46TWG3A - Temperate
50 Hz @ 1500 rev/min 50 Hz @ 1500 rev/min
Designation Units Baseload Prime Standby Designation Units Baseload Prime Standby
power power power power power power
Energy in fuel kWt 2107 2632 2939 Energy in fuel kWt 2278 2889 3245
Energy in power output Energy in power output
kWb 884 1106 1217 kWb 960 1200 1314
(gross) (gross)
Energy to cooling fan kWm 51 Energy to cooling fan kWm 51
Energy in power output Energy in power output
kWm 833 1055 1166 kWm 909 1149 1263
(nett) (nett)
Energy to exhaust kWt 684 878 1001 Energy to exhaust kWt 745 981 1128
Energy to coolant and Energy to coolant and
kWt 345 372 401 kWt 352 395 441
oil oil
Energy to radiation kWt 64 81 89 Energy to radiation kWt 70 87 96
Energy to charge cooler kWt 131 195 232 Energy to charge cooler kWt 151 226 266

4012-46TWG2A - Tropical 4012-46TWG3A - Tropical

50 Hz @ 1500 rev/min 50 Hz @ 1500 rev/min
Designation Units Baseload Prime Standby Designation Units Baseload Prime Standby
power power power power power power
Energy in fuel kWt 2123 2650 2960 Energy in fuel kWt 2294 2910 3269
Energy in power output Energy in power output
kWb 891 1113 1224 kWb 967 1207 1321
(gross) (gross)
Energy to cooling fan kWm 58 Energy to cooling fan kWm 58
Energy in power output Energy in power output
kWm 833 1055 1166 kWm 909 1149 1263
(nett) (nett)
Energy to exhaust kWt 689 886 1009 Energy to exhaust kWt 751 989 1138
Energy to coolant and Energy to coolant and
kWt 345 374 403 kWt 353 398 445
oil oil
Energy to radiation kWt 65 81 89 Energy to radiation kWt 70 88 96
Energy to charge cooler kWt 133 197 234 Energy to charge cooler kWt 153 228 269

Note: Not to be used for combined heat and power (CHP) purposes (indicative figures only), if required, please consult Perkins Engines
Company Limited.

Exhaust system
Outlet size (internal) ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2 x 254 mm
Outlet flange size ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 10 table D
Back pressure for total system... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 5 kPa
For recommended pipe sizes, refer to the Installation Manual.

Induction system
Emissions data with combustion air temperature of 25 C
Maximum air intake restriction of engine:
-clean filter . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 2 kPa
-dirty filter ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 4 kPa
-air filter type .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . heavy duty axial flow
 3750 OVERALL WIDTH

1312 2236

1618 189

786

73.5 FUEL LEAK-OFF CONN.

FUEL LEAK OFF CON NO FUEL COOLER FITTED

REAR FACE OF C/CASE

FRONT FACE OF C/CASE

REAR FACE OF FLYWHEEL HSG.
4012-46TWG2A Temperate - left view

25

EXHAUST OUTLET ELBOW

1 EACH SIDE. SEE
FLANGE DETAIL. SYSTEM
1280 FAN PIPEWORK MUST BE
ADEQUATELY SUPPORTED
TO ENSURE THAT NO LOAD
IS EXERTED ON
533 TURBOCHARGERS

CRANKSHAFT

26.5 HOLE
REAR LIFTING
LOW OIL PRESSURE BRACKET
SWITCH. 1 EACH SIDE.
(ENGINE ONLY)
1 PER SIDE

CRANKCASE INSPECTION
19 COVERS
CRANKSHAFT PULLEY 5 GROOVE
FOR SPB & B SECTION BELTS GROOVE CRS
COOLANT DRIAN TAP
TO BS3790:1995
391 1 EACH SIDE.

LUB. OIL FILLER LUB. OIL COOLER

FRONT GROOVE
1 EACH SIDE
IN PULLEY
533 G3/8" TAPPING FOR
LUB. OIL TEMP. CONN.
LUB.OIL DIPSTICK
G1/4" TAPPING FOR
SUMP DRAIN PLUG G1 LUB. OIL TEMP. CONN.
(BOTH SIDES)
4012-46TWG2A Temperate - front view

1684
CRS
1604
OVER MATRIX
650 842
RADIATOR FILLER
0.7 BAR RELIEF VALVE 802

513 513
FUEL COOLER WHEN FITTED FUEL LEAK-OFF CONN.
510
FUEL COOLER TO SUIT 15mm O/D PIPE.
CONNECTIONS
'BITE' TYPE NON-RETURN
VALVE SUPPLIED.
G 3/8" AND G 1/2" TAPPINGS IN I EACH SIDE.
THERMOSTAT HOUSING

Rp 1/2" TAPPING IN THERMOSTAT

HOUSING. 1 EACH SIDE

7 PITCHES 1592
OF 200 OVER
= 1400 MATRIX
THERMOSTAT HOUSING
1 EACH SIDE
385 570 20 HOLE, FRONT
LIFTING BRACKET
CRANKSHAFT (ENGINE ONLY)
1 EACH SIDE
75
FUEL INLET CONNECTION 15
(OUTSIDE) STEEL PIPE. 409.5
313.5
MAXIMUM FUEL LIFT 2.5 METRES
WHEN FUEL TANK OUTLET IS
LOWER THAN LIFT PUMP INLET A
NON-RETURN VALVE MUST BE
10
CRANKSHAFT

FITTED AT FUEL TANK. IF MAX. 315 315

FUEL LIFT FIGURE IS EXCEED TORSIONAL VIBRATION
CONSULT PERKINS TECHNICAL DEPT. 70 CLEARANCE DAMPERS (2 X 20")
REQUIRED TO
FUEL FILTER/WATER SEPERATOR REMOVE SUMP

ELECTRONIC ACTUATOR
FRONT VIEW
 12 FRONT LIFTING BRACKET

FRONT FACE OF CRANKCASE

HIGH WATER TEMP

PROTECTION SWITCH
36 FUEL LEAK-OFF CONN. 1 EACH SIDE
NO FUEL COOLER FITTED
BREATHER CON
1 EACH SIDE
AIR FILTER ELECTRONIC CONTROL 591
FLEX HOSE 51 I/DIA X 865 LG
1 EACH SIDE UNIT FOR ACTUATOR. SUPPLIED LOOSE
G3/4" FUEL COOLER
EXHAUST GAS HIGH TEMP CONNECTIONS
PROTECTION MODULE RADIATOR WATER LEVEL SWITCH
1 EACH SIDE

G 3/8" AND G 1/2" TAPPINGS IN

THERMOSTAT HOUSING
4012-46TWG2A Temperate - right view

Rp 1/2" TAPPING IN THERMOSTAT

HOUSING. 1 EACH SIDE
248.5

AIR
FLOW 878
CHARGE AIR COOLER
1 EACH SIDE

CRANKSHAFT

FUEL LEAK OFF CON

FUEL INLET CONNECTION 15

(OUTSIDE) STEEL PIPE.
MAXIMUM FUEL LIFT 2.5 METRES
WHEN FUEL TANK OUTLET IS
LOWER THAN LIFT PUMP INLET A
24V ALTERNATOR NON-RETURN VALVE MUST BE
DUAL 24V. STARTERS
FITTED AT FUEL TANK. IF MAX.
LUB. OIL PUMP FUEL LIFT FIGURE IS EXCEED
STARTER RELAY
FUEL LIFT PUMP
G1/4" TAPPING FOR
LUB.OIL PRESS.CONN. FUEL HAND PRIMING PUMP

LUB. OIL FILTERS

3 EACH SIDE
1956 C of G WET WITH
G3/8" TAPPING FOR SIDE VIEW BANK A FUEL COOLER RADIATOR
LUB.OIL TEMP.CONN. 1958 C of G WET WITHOUT
FUEL COLLER RADIATOR
4012-46TWG2A Temperate - rear view

1780 OVERALL WIDTH

AIR FILTER RESTRICTION 1704 OVERALL RADIATOR
INDICATOR 1 EACH SIDE

301 CRANKSHAFT 301

EXHAUST OUTLET FLANGE
24 V AIR SHUT-OFF VALVE
1 EACH SIDE
ENERGISED TO CLOSE.
SEE DETAIL
1 EACH SIDE

1400
2291 OVERALL HEIGHT

CRANKSHAFT
235.4
ENGINE
280
FEET
611 552 .5 646
25 39 CLEARANCE
REQUIRED TO REMOVE
FUEL FILTER

6 HOLES M16 X 30 DEEP

EQUALLY SPACED ON 182 182
16 HOLES M12 X 21 DEEP
543 (21.38") P.C.D. EQUALLY SPACED AS SHOWN
641
ON 851 (33.5") P.C.D.
11.25
SUMP DRAIN PLUG
4012-46TWG2A Temperate - Support pads, exhaust outlet flange and flywheel detail
406

8 HOLES 22
EQUALLY SPACED
ON 356 PC
22,5

250

DETAIL OF EXHAUST OUTLET FLANGE

(B.S.10 TABLE D)
SCALE 1:5

10
15.7

592 883
100,035 498
571,6 787,65
100,00
571,5 787,4
CRANKSHAFT

6,5

DETAIL OF SAE 518 FLYWHEEL

AND SAE 00 FLYWHEEL HOUSING
(METRIC TAPPINGS)
SCALE 1:5

2369
39
1744 175 300 300 100

60
70 98
91
REAR FACE FLYWHEEL HSG

6 HOLES 22 851
FRONT FACE C/CASE

500 112,5
435 8 HOLES22
451
1000 CRANKSHAFT 1702
C
L
1780

150

4 154 135
221

PLAN VIEW OF SUPPORT PADS

900
 3750 OVERALL LENGTH

1312 2236

1618 189

786

FRONT FACE OF C/CASE

FUEL LEAK OFF CON

73.5 FUEL LEAK-OFF CONN.

NO FUEL COOLER FITTED
RADIATOR WATER LEVEL SWITCH

REAR FACE OF C/CASE

REAR FACE OF FLYWHEEL HSG.
25

EXHAUST OUTLET ELBOW

1 EACH SIDE. SEE
FLANGE DETAIL. SYSTEM
1280 PIPEWORK MUST BE
FAN ADEQUATELY SUPPORTED
TO ENSURE THAT NO LOAD
IS EXERTED ON
TURBOCHARGERS
4012-46TWG2A Tropical - 4012-46TWG3A Temperate - left view

533

CRANKSHAFT

26.5 HOLE
REAR LIFTING BRACKET
LOW OIL PRESSURE (ENGINE ONLY)
SWITCH. 1 EACH SIDE. 1 PER SIDE
CRANKCASE INSPECTION
COVERS
CRANKSHAFT PULLEY 5 GROOVE
FOR SPB & B SECTION BELTS COOLANT DRIAN TAP
TO BS3790:1995 1 EACH SIDE.
LUB. OIL FILLER
LUB. OIL COOLER
1 EACH SIDE
FRONT GROOVE 19
IN PULLEY GROOVE CRS 533 391 G3/8" TAPPING FOR
LUB. OIL TEMP. CONN.
LUB.OIL DIPSTICK
G1/4" TAPPING FOR
SUMP DRAIN PLUG G1" LUB. OIL TEMP. CONN.
(BOTH SIDES)
4012-46TWG2A Tropical - 4012-46TWG3A Temperate - front view

1672
CRS
1600
OVER MATRIX
600 836
RADIATOR FILLER
0.7 BAR RELIEF VALVE 800
G 3/8" AND G 1/2" TAPPINGS IN
513 513 THERMOSTAT HOUSING
509 315 1 EACH SIDE
FUEL COOLER FUEL COOLER WHEN FITTED
CONNECTIONS

Rp 1/2" TAPPING IN THERMOSTAT

HOUSING. 1 EACH SIDE FUEL LEAK-OFF CONN.
TO SUIT 15mm O/D PIPE.
'BITE' TYPE NON-RETURN
VALVE SUPPLIED.
THERMOSTAT HOUSING
1 EACH SIDE I EACH SIDE.

7 PITCHES1644
OF 226 OVER
= 1582 MATRIX

75
20 HOLE, FRONT LIFTING BRACKET
385 (ENGINE ONLY) 1 EACH SIDE
CRANKSHAFT

FUEL INLET CONNECTION 15 570

(OUTSIDE) STEEL PIPE.
MAXIMUM FUEL LIFT 2.5 METRES 294.5
WHEN FUEL TANK OUTLET IS
LOWER THAN LIFT PUMP INLET A
NON-RETURN VALVE MUST BE 243
10
CRANKSHAFT

FITTED AT FUEL TANK. IF MAX.

FUEL LIFT FIGURE IS EXCEED 315 TORSIONAL VIBRATION
CONSULT PERKINS TECHNICAL DEPT. 70 CLEARANCE DAMPERS
REQUIRED TO
FUEL FILTER/WATER SEPERATOR REMOVE SUMP

ELECTRONIC ACTUATOR

FRONT VIEW
 12 FRONT LIFTING BRACKET
FRONT FACE OF CRANKCASE

36 FUEL LEAK OFF CONN. HIGH WATER TEMP

NO FUEL COOLER FITTED PROTECTION SWITCH
1 EACH SIDE
BREATHER CON
1 EACH SIDE
ELECTRONIC CONTROL FLEX HOSE 51 I/DIA X 865 LG
606
AIR FILTER UNIT FOR ACTUATOR. SUPPLIED LOOSE
1 EACH SIDE
G3/4" FUEL COOLER
CONNECTIONS

248.5

EXHAUST GAS HIGH TEMP

PROTECTION MODULE
1 EACH SIDE

AIR
976
FLOW

CHARGE AIR COOLER

1 EACH SIDE

CRANKSHAFT
4012-46TWG2A Tropical - 4012-46TWG3A Temperate - right view

FUEL LEAK OFF CON

DUAL 24V. STARTERS 24V ALTERNATOR

LUB. OIL PUMP

STARTER RELAY

G1/4" TAPPING FOR FUEL LIFT PUMP

LUB.OIL PRESS.CONN. 1960 C of G WET WITH
FUEL COOLER RADIATOR
1962 C of G WET WITHOUT
LUB. OIL FILTERS FUEL HAND PRIMING PUMP FUEL COLLER RADIATOR
3 EACH SIDE SIDE VIEW BANK A

G3/8" TAPPING FOR

LUB.OIL TEMP.CONN.
4012-46TWG2A Tropical - 4012-46TWG3A Temperate- rear view

BANK B
1780 OVERALL WIDTH
BANK A

1704 OVER RADIATOR

AIR FILTER RESTRICTION
INDICATOR 1 EACH SIDE
301 301

CRANKSHAFT
EXHAUST OUTLET
24 V AIR SHUT-OFF VALVE FLANGE 1 EACH
ENERGISED TO CLOSE. SIDE SEE DETAIL
1 EACH SIDE

1400
2255 OVERALL
HEIGHT

39 CLEARANCE
REQUIRED TO
REMOVE FUEL
FILTER
CRANKSHAFT

235.4
ENGINE FEET 280

646 611 552.5

25

6 HOLES M16 X 30 DEEP

EQUALLY SPACED ON
182 182 16 HOLES M12 X 21 DEEP
543 (21.38") P.C.D.
EQUALLY SPACED AS SHOWN
11.25 ON 851 (33.5") P.C.D.
SUMP DRAIN PLUG 641
4012-46TWG2A Tropical - 4012-46TWG3A Temperate - Support pads, exhaust outlet flange and flywheel detail

406

8 HOLES 22
EQUALLY SPACED
ON 356 PC
22,5

250

DETAIL OF EXHAUST OUTLET FLANGE

(B.S.10 TABLE D)
SCALE 1:5
10
15.7

571,6 787,65

100,035 571,5 787,4
498
100,00 592 883

CRANKSHAFT

6,5
DETAIL OF SAE 518 FLYWHEEL
AND SAE 00 FLYWHEEL HOUSING
(METRIC TAPPINGS)
SCALE 1:5

2369

1744 175 300 300 100 39

60

70
91 98
6 HOLES 22
REAR FACE FLYWHEEL HSG

851
112,5
FRONT FACE C/CASE

500
435 8 HOLES 22
451
1000 CRANKSHAFT
C
L
1702
1780

4 154 135
221

PLAN VIEW OF SUPPORT PADS 150

900
 3750
OVERALL LENGTH

2236

1312 1618 189

26.5 HOLE REAR
786
FUEL LEAK-OFF LIFTING BRACKET
RADIATOR WATER 73.5 FUEL LEAK-OFF
CONN. ENGINE ONLY
LEVEL SWITCH NO FUEL COOLER FITTED
1 EACH SIDE
25
EXHAUST OUTLET ELBOW

REAR FACE OF C/CASE

REAR FACE OF FLYWHEEL HSG.
1 EACH SIDE. SEE
FLANGE DETAIL. SYSTEM
4012-46TWG3A Tropical - left view

PIPEWORK MUST BE
ADEQUATELY SUPPORTED
TO ENSURETHAT NO LOAD

FRONT FACE OF C/CASE

IS EXERTED ON
LOW OIL PRESSURE
SWITCH. 1 EACH SIDE. TURBOCHARGERS

1280
FAN

CRANKSHAFT

CRANKCASE INSPECTION
COVERS
19 COOLANT DRAIN TAP.
GROOVE CRS 1 EACH SIDE.

LUB. OIL COOLER

CRANKSHAFT PULLEY 5 GROOVE 1 EACH SIDE
FOR SPB & B SECTION BELTS
TO BS3790:1995 533 391 G3/8" TAPPING FOR
LUB. OIL TEMP. CONN.
G1/4" TAPPING FOR
LUB.OIL FILLER
LUB. OIL PRESS. CONN.
FRONT GROOVE
LUB.OIL DIPSTICK
IN PULLEY SIDE VIEW
SUMP DRAIN PLUG G1"
(BOTH SIDES) B BANK
4012-46TWG3A Tropical - front view

1873
CRS
936.5

1805
OVER MATRIX
RADIATOR FILLER
0.7 BAR RELIEF VALVE 701 902.5

513
FUEL COOLER WHEN FITTED
G 3/8" AND G 1/2" TAPPINGS IN 510 513
FUEL COOLER
THERMOSTAT HOUSING 1 EACH SIDE CONNECTIONS 16 SLOTS 11 X 19
(FOR DUCTING PURPOSES)
Rp 1/2" TAPPING IN THERMOSTAT
HOUSING. 1 EACH SIDE

ELECTRONIC ACTUATOR

THERMOSTAT HOUSING FUEL LEAK-OFF CONN.

1 EACH SIDE TO SUIT 15 mm O/D PIPE.
'BITE' TYPE NON-RETURN
FUEL INLET CONNECTION 15 VALVE SUPPLIED.
OUTSIDE STEEL PIPE. 1 EACH SIDE. 1662
MAXIMUM FUEL LIFT 2,5 METRES OVER
WHEN FUEL TANK OUTLET IS MATRIX
LOWER THAN LIFT PUMP INLET A
NON-RETURN VALVE MUST BE 7 PITTCHES
FITTED AT FUEL TANK. IF MAX. 570 @ 226
FUEL LIFT FIGURE IS EXCEEDED 385 75 385 =1582
CONSULT PERKINS TECHNICAL DEPT.
CRANKSHAFT
20 HOLE FRONT
LIFTING BRACKET
(ENGINE ONLY) 1 EACH SIDE

235.4 254.5 294.5

ENGINE 22
FEET

FUEL FILTER/WATER SEPARATOR

RADIATOR DRAIN 315 TORSIONAL VIBRATION

PLUG G1/2" 315
370 353 70 CLEARANCE DAMPER
REQUIRED
641
TO REMOVE
CRANKSHAFT

SUMP
 36 FUEL LEAK-OFF CONN.
NO FUEL COOLER FITTED 12 FRONT LIFTING BRACKET

H.W.T. PROTECTION SWITCH.

1 EACH SIDE.

ELECTRONIC CONTROL
UNIT FOR ACTUATOR. BREATHER CONN.
AIR FILTERS
1 EACH SIDE. 1 EACH SIDE
FLEX. HOSE 51 I/DIA X865 LONG
EXHAUST GAS HIGH TEMP: 605
SUPPLIED LOOSE
PROTECTION MODULE

G3/4" FUEL COOLER

CONNECTIONS
4012-46TWG3A Tropical - right view

AIR FLOW 248.5

FRTONT FACE CRANKCASE

CHARGE AIR COOLER
1 EACH SIDE
981
FUEL LEAK-OFF
LUB. OIL FILTERS CONN.
3 EACH SIDE

CRANKSHAFT

DUAL 24V. STARTERS

24 V ALTERNATOR

STARTER RELAY
G1/4" TAPPING FOR LUB. OIL PUMP
LUB.OIL PRESS.CONN. G3/8" TAPPING FOR
LUB.OIL TEMP.CONN. FUEL LIFT PUMP
FUEL HAND-PRIMING
PUMP

1634
C OF G WET
WITH FUEL COOLER
1635 C OF G WET
WITHOUT FUEL COOLER
4012-46TWG3A Tropical - rear view

1978
OVERALL WIDTH
1905
OVER RADIATOR

AIR FILTER RESTRICTION

CRANKSHAFT

INDICATOR. 1 EACH SIDE 301 301

B BANK A BANK
24 V AIR SHUT-OFF VALVE
ENERGISED TO CLOSE.
1 EACH SIDE

1400

CLEARANCE REQUIRED TO 2255

REMOVE FUEL FILTER
OVERALL
HEIGHT
235.4
ENGINE
FEET ROTATION
CRANKSHAFT
25
280
552.5
611 646
10

39

6 HOLES M16 X 30 DEEP

16 HOLES M12 X 21 DEEP
EQUALLY SPACED ON 11.25
EQUALLY SPACED AS SHOWN
543 (21.38") P.C.D.
ON 851 (33.5") P.C.D.
182 182
SUMP DRAIN PLUG
4012-46TWG3A Tropical - Support pads, exhaust outlet flange and flywheel details
406

8 HOLES 22
EQUALLY SPACED
ON 356 PC
22,5

250

DETAIL OF EXHAUST OUTLET FLANGE

(B.S.10 TABLE D)
SCALE 1:5

10
15.7

100,035
100,00 571,6 592 787,65 883
498 571,5 787,4

CRANKSHAFT

6,5

DETAIL OF SAE 518 FLYWHEEL

AND SAE 00 FLYWHEEL HOUSING
(METRIC TAPPINGS)
SCALE 1:5

2369 300 300

100
39

1744 175
60
91 98
70 6 HOLES 22

950
REAR FACE FLYWHEEL HSG

FRONT FACE C/CASE

500 451
435

CRANKSHAFT 1900 1978

1000

135
4 154
221

PLAN VIEW OF SUPPORT PADS 150

900
Cooling system Coolant pump
-speed ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 1.4 x engine rev/min
Recommended coolant: 50% inhibited ethylene glycol or 50%
-method of drive . ... ... ... ... ... ... ... ... ... ... ... engine (gear) driven
inhibited propylene glycol and 50% clean fresh water. For CHP
systems and where there is no likelihood of ambient temperature Radiator
below 10 C, then clean soft water may be used, treated with 1% Face area
by volume of Perkins inhibitor in the cooling system. The inhibitor is -temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..2630400 mm
available in 1 litre bottles from all Perkins Distributors. -tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..2967420 mm
Maximum pressure in crankcase water jacket .. ... ... ... ... 170 kPa Number of rows and material . ... ... ... ... ... ... ... ... ... ... ... ... .. 226
Maximum top tank temperature (standby) ... ... ... ... ... ... ... 98 C Fins per inch and material .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 7
Maximum static pressure on pump ... ... ... ... ... ... ... ... ... . 70 kPa Width of matrix
Maximum pressure cap setting . ... ... ... ... ... ... ... ... ... ... . 70 kPa -temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1600 mm
-tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1805 mm
Total coolant capacity Height of matrix .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1644 mm
Electrounit (engine only) ... ... ... ... ... ... ... ... ... ... ... ... ... 73 litres
Weight (dry)
ElectropaK
-temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 780 kg
-temperate (engine and radiator) .. ... ... ... ... ... ... ... ... ...196 litres
-tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 843 kg
-tropical (engine and radiator) ... ... ... ... ... ... ... ... ... ... .. 201 litres
Total coolant capacity
Maximum permissible restriction to coolant pump flow. ... . 20 kPa
-temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 123 litres
Thermostat operating range.. ... ... ... ... ... ... ... ... ... ... 71 - 85 C
-tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 128 litres
Temperature rise across the engine (standby power) with inhibited
Pressure cap setting (min) . ... ... ... ... ... ... ... ... ... ... ... ... .69 kPa
coolant .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 8 C
Shutdown switch setting ... ... ... ... ... ... ... ... ... ... . 101 C (rising) Fan
Coolant immersion heater capacity... ... ... ... ... ... ... ... .. 2 x 4 kW Type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. engine driven
Diameter
Water jacket cooling data -temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1400 mm
Coolant flow .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...948 l/min -tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1530 mm
Coolant exit temperature (max). ... ... ... ... ... ... ... ... ... ... ... 98 C
Number of blades ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 12
Coolant inlet temperature (min). ... ... ... ... ... ... ... ... ... ... ... 70 C Material... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Aluminium
Coolant inlet temperature (max) ... ... ... ... ... ... ... ... ... ... ... 85 C
Drive ratio
-temperate .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...1:1
-tropical... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1:0,9

Cooling clearance
4012-46TWG2A - Temperate 4012-46TWG3A - Temperate
Maximum additional restriction (duct allowance) to cooling Maximum additional restriction (duct allowance) to cooling
airflow, and resultant min airflow airflow, and resultant min airflow
Description C Pa m/sec Description C Pa m/sec
Ambient clearance: Ambient clearance:
35 N/A N/A 35 N/A N/A
Inhibited coolant Inhibited coolant
Duct allowance 35 250 N/A Duct allowance 35 250 N/A
Minimum airflow 35 250 22 Minimum airflow 35 250 22

4012-46TWG2A - Tropical 4012-46TWG3A - Tropical

Maximum additional restriction (duct allowance) to cooling Maximum additional restriction (duct allowance) to cooling
airflow, and resultant min airflow airflow, and resultant min airflow
Description C Pa m/sec Description C Pa m/sec
Ambient clearance: Ambient clearance:
50 N/A N/A 50 N/A N/A
Inhibited coolant Inhibited coolant
Duct allowance 50 125 N/A Duct allowance 50 125 N/A
Minimum airflow 50 125 28 Minimum airflow 50 125 28
Fuel system
Injection system . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... direct injection
Fuel injection pump/Injector type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Combined unit injector
Injector pressure ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 23,4 MPa
Fuel lift pump type.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...Gerotor
Delivery flow... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1020 litres/hr
Heat retained in fuel to tank
-4012-46TWG2A ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 8,5 kW
-4012-46TWG3A ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 9,0 kW
Fuel inlet temperature to be less than ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 58 C
Delivery pressure ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 300 kPa
Maximum suction head at pump inlet ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 24,5 kPa
Maximum static pressure head .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... see manual
Fuel filter spacing ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 10 microns
Governing type... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... electronic
Governing .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... to ISO 8528-5 2005
Torque at the governor output shaft... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1631
Tolerance on fuel consumption .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... to ISO 8528-1 1993
Fuel specification
Recommended fuel to conform to: . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... -BS2869 1998 class A2 or BS EN590

Fuel consumption
Note: All fuel consumption figures are based on assumed fuel density of 0.862.

4012-46TWG2A - Temperate 4012-46TWG3A - Temperate

Fuel consumption calculated Fuel consumption calculated
on nett rated powers on nett rated powers
Designation Designation
1500 rev/min 1500 rev/min
g/kWh litres/hr g/kWh litres/hr
Standby 212 287 Standby 215 315
Prime power 211 258 Prime power 211 281
Baseload power 213 206 Baseload power 212 224
At 75% of Prime power 214 196 At 75% of Prime power 212 212
At 50% of Prime power 230 141 At 50% of Prime power 224 149

4012-46TWG2A - Tropical 4012-46TWG3A - Tropical

Fuel consumption calculated Fuel consumption calculated
on nett rated powers on nett rated powers
Designation Designation
1500 rev/min 1500 rev/min
g/kWh litres/hr g/kWh litres/hr
Standby 213 288 Standby 217 318
Prime power 212 259 Prime power 212 283
Baseload power 214 207 Baseload power 213 225
At 75% of Prime power 216 196 At 75% of Prime power 213 213
At 50% of Prime power 233 143 At 50% of Prime power 226 151
Electrical system Cold start recommendations
Alternator Temperature
-type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. insulated return range
-voltage .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 24 volts Oil: .. ... .. ... .. ... .. ... .. ... .. ... .. ... .. ...API CH4 15W40
-output ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 40 amps Starter: .. ... .. ... .. ... .. ... .. ... .. ... .. ... .. ... 2 x 24 volts
Starter Battery: .. ... .. ... .. ... .. ... .. ... .. ... .. ... .4 x 12V 286 Ah
Down to 0 C
Max breakaway current: . .. ... .. ... .. ... .. ... 1600 amps
-type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . (axial) electric (32 F)
Cranking current: . ... .. ... .. ... .. ... .. ... .. ... .. 810 amps
-motor voltage ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 24 volts Aids: ... .. ... .. ... .. ... .. ... .. ... .. ... .. ... .. .block heaters
-motor power.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 16,4 kW Min mean cranking speed:.. ... .. ... .. ... .. ... 120 rev/min
Number of teeth on
-flywheel. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 156 Notes:
-starter motor . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 12
Minimum cranking speed ... ... ... ... ... ... ... ... ... ... ... 120 rev/min The battery capacity is defined by the 20 hour rate
Starter solenoid (24V) The oil specification should be for the minimum ambient
-pull in current @ -25 C max. ... ... ... ... ... ... ... ... ... ... . 30 amps temperature as the oil will not be warmed by the immersion
-hold in current @ -25 C max ... ... ... ... ... ... ... ... ... ... ... 9 amps heater
Engine stop solenoid current . ... ... ... ... ... ... ... ... ... ... . 1,1 amps Breakaway current is dependant on battery capacity available.
Cables should be capable of handling the transient current
Engine mounting which may be up to double the steady cranking current.

Maximum static bending moment at rear face of block . . 1356 Nm

Maximum additional load applied to flywheel due to rotating
Lubrication system
components ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 850 kg Recommended multigrade oil viscosity (15W40) which adequately
meets the specifications of API CH4. For further details refer to the
Centre of gravity engine OMM.

Bare engine (wet) 4012-46TWG2A / 4012-46TWG3A

Lubricating oil capacity
-forward of rear face of cylinder block ... ... ... ... ... ... ... .. 658 mm Total system ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 177 litres
-above crankshaft centre line. ... ... ... ... ... ... ... ... ... ... ... 32 mm Sump maximum .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 159 litres
ElectropaK (wet) - Temperate Sump minimum ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 136 litres
-forward of rear face of cylinder block ... ... ... ... ... ... ... .. 960 mm Oil temperature at normal operating conditions .. ... ... ... ... . 95 C
-above crankshaft centre line. ... ... ... ... ... ... ... ... ... ... ... 32 mm Oil temperature (in rail) - maximum continuous operation .. 105 C
ElectropaK (wet) - Tropical Lubricating oil pressure
-forward of rear face of cylinder block ... ... ... ... ... ... ... 1286 mm minimum.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 340 kPa
-above crankshaft centre line. ... ... ... ... ... ... ... ... ... ... ... 32 mm At rated speed . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..400 kPa
Oil relief opens ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..400 kPa
Oil filter screen spacing ... ... ... ... ... ... ... ... ... ... ... ... 20 microns
Sump drain plug tapping size .. ... ... ... ... ... ... ... ... ... ... ... ... . G1
Lubricating oil pump speed . ... ... ... ... ... ... ...1.4 x engine rev/min
Lubricating oil pump drive method .. ... ... ... ... ... ... . engine driven
Shutdown switch - pressure setting (where fitted) 193 kPa (falling)
Normal operating angles
-front and rear.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 5
-side tilt ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 10
4012- 4012-
Oil consumption (prime power)
46TWG2A 46TWG3A
After running-in
g/kWhr 0,52 0,52
(typically after 250 hours)
Oil flow rate from oil pump l/s 6,0 6,0
Noise levels
The figures for total noise levels are typical for an engine running at the standby power rating in a semi-reverberant environment and
measured at a distance of one metre from the periphery of the engine (sound pressure level re: -20 x 10-6 pa).
Ambient noise level ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 70 dB(A)
Octave analysis
The following diagrams show maximum noise level.

Noise data 4012-46TWG3A, 1500 rev/min 1263 kWb with radiator 584/471FC
Fr equency anal ysi s at poi nt 6

120
105 106.8 104 101.8
Position SPL dBA 100
96.2 97 95.6
91.4
91
86.1
1 114.1
2 112.9 6 1 80

3 113.0 60

4 111.7
40
5 113.0
5 2
6 114.2 20

0
31.5 63 125 250 500 1K 2K 4K 8K 16k

4 3 Fr equency i n Hz

Noise data 4012-46TWG3A, 1500 rev/min 1263 kWb with radiator 584/485FC

Fr e que nc y a na l y si s a t poi nt 1

120 109.4 109.6

102.8
Position SPL dBA 95.8
100
92.6 95.1
100 90.2
88
1 113.5 84

2 113.2 6 1 80

3 112.0
60
4 111.7
40
5 113.1
5 2
6 112.8 20

0
31.5 63 125 250 500 1K 2K 4K 8K 16k

4 3 Fr e que nc y i n H z

Note: The information given on this Technical Data Sheet is for standard ratings only. For ratings other than those shown, please contact
Perkins Engines Company Limited.

Load acceptance (cold)

4012-46TWG2A (prime %) ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 72
4012-46TWG3A (prime %) ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 65
Engine block temperature (cold) ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...45 C
Ambient temperature. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...25 C
Governing mode ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Isochronous
Alternator inertia ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 50 kgm
Under frequency roll off (UFRO) point set to. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 49 Hz
UFRO rate set to ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 16 V/Hz
LAM on/off. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... on

Notes:
All test were conducted using an engine installed and serviced to Perkins Engine Company Limited recommendations.
Applied load is a percentage of the generator electrical output efficiencies as published in the general installation section of this data
sheet.
4000 Series 4012-46TWG2A
4012-46TWG3A

Publication No. TPD1603E, Issue 2. May 2007 Perkins Engines Company Limited.

@Perkins
Distributed by

Perkins Engines Company Limited

Peterborough PE1 5NA United Kingdom
Telephone +44 (0) 1733 583000
Fax +44 (0) 1733 582240
www.perkins.com

All information in the document is substantially correct at the time

of printing but may be subsequently altered by the company.