MTU 12 V 4000 G21R User manual

Operating Instructions

Diesel engine

12 V 4000 G21R

12 V 4000 G41R

MS150064/01E

2 General Information

2.1 Engine side and cylinder designations

Engine sides are always designated as viewed from the driving end (KS).

The cylinders of the left engine side are designated "A" and those of the right side "B" (as per DIN ISO

1204). The cylinders of each bank are numbered consecutively, starting with No. 1 at the driving end of

the engine.

Other components are numbered in the same way, i.e. starting with No. 1 on driving end.

1 KGS = Free end

2 Right engine side

3 KS = Driving end

4 Left engine side

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2.2 Engine layout

Illustration valid for 8/12/16V 4000 Gxy engines

1 Coolant line

2 Exhaust system

3 Exhaust turbocharger

4 Air intake

5 Intercooler

6 Engine governor

7 PTO systems, driving end

and free end (coupling)

8 Air supply

9 Starting equipment

10 Oil filler neck

11 Mounting / support

12 Oil pan

13 Fuel line (high pressure)

14 Inspection port cover

15 Cylinder head

16 Fuel line (low pressure)

17 Lube oil filter

18 Fuel pump (high pres‐

sure)

19 Gear train

20 Running gear

21 Coolant system

22 Lube oil system

Engine model designation

Key to the engine model designations 8/12/16V 4000 Gxy

Designation Meaning

8/12/16 Number of cylinders

V Cylinder arrangement: V engine

4000 Series

G Application

x Application segment (2, 4, 6, 8)

y Design index (1, 2,...)

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3 Technical Data

3.1 12V 4000 engine data, continuous operation, variable 3B,

optimized fuel consumption

Explanation

Abbr. Meaning

DL Ref. value: Continuous power

BL Ref. value: Fuel stop power

A Design value

G Guaranteed value

R Guideline value

L Limit value, up to which the engine can be operated without changes (e.g. of power set‐

ting)

N Not yet defined value

- Not applicable

X Applicable

REFERENCE CONDITIONS

Engine model 12V

4000 G21R

12V

4000 G21R

12V

4000 G41R

Application group 3B 3B 3B

Intake air temperature °C 25 25 25

Charge-air coolant temperature °C 55 55 55

Barometric pressure mbar 1000 1000 1000

Site altitude above sea level m 100 100 100

POWER-RELATED DATA (power ratings are net brake power as per ISO 3046)

Number of cylinders 12 12 12

Engine rated speed A rpm 1500 1800 1800

Continuous power ISO 3046 (10%

overload capability) (design power

DIN 6280, ISO 8528)

A kW 1102 1246 1246

GENERAL CONDITIONS (for maximum power)

Number of cylinders 12 12 12

Intake air depression (new filter) A mbar 30 30 30

Intake air depression, max. L mbar 50 50 60

Exhaust pressure A mbar 30 30 30

Exhaust pressure, max. L mbar 51 51 51

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CONSUMPTION

Number of cylinders 12 12 12

Lube oil consumption after engine

run-in (B = hourly fuel consumption)

R % of B 0.5 0.5 0.5

MODEL RELATED DATA (basic design)

Number of cylinders 12 12 12

Cylinder arrangement: V angle Degrees (°) 90 90 90

Bore mm 165 165 165

Stroke mm 190 190 190

Displacement per cylinder liter 4.06 4.06 4.06

Displacement, total liter 48.7 48.7 65.0

Compression ratio 15.5 15.5 15.5

Number of inlet valves per cylinder 2 2 2

Number of exhaust valves per cylin‐

der

2 2 2

Standard flywheel housing flange (en‐

gine main PTO)

SAE 00 00 00

COMBUSTION AIR / EXHAUST GAS

Number of cylinders 12 12 12

Charge air pressure before cylinder,

R bar ABS 2.4 2.8 2.8

COOLING SYSTEM (HT circuit)

Number of cylinders 12 12 12

Coolant temperature (at engine outlet

to cooling equipment)

A °C 95 95 95

Coolant temperature after engine,

alarm

R °C 97 97 97

Coolant temperature after engine,

shutdown

L °C 99 99 99

Coolant antifreeze content, max. L % 50 50 50

Pressure loss in external raw water

system, max.

L bar 0.7 0.7 0.7

COOLING SYSTEM (LT circuit)

Number of cylinders 12 12 12

Coolant temperature before intercool‐

er (at engine inlet from cooling equip‐

ment)

A °C 55 55 55

Coolant antifreeze content, max. L % 50 50 50

Pressure loss in external raw water

system, max.

L bar 0.7 0.7 0.7

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LUBE OIL SYSTEM

Number of cylinders 12 12 12

Lube oil temperature before engine,

from

R °C 85 85 85

Lube oil operating temperature before

engine, to

R °C 95 95 95

Lube oil temperature before engine,

alarm

R °C 95 95 95

Lube oil operating pressure before

engine, from

R bar 5.0 5.0 5.0

Lube oil operating pressure before

engine, to

R bar 6.0 6.0 6.0

Lube oil pressure before engine,

alarm

R bar 4.5 4.5 4.5

Lube oil pressure before engine,

shutdown

L bar 4.0 4.0 4.0

FUEL SYSTEM

Number of cylinders 12 12 12

Fuel pressure at supply connection to

engine, min. (when engine is starting)

L bar -0.1 -0.1 -0.1

Fuel pressure at engine supply con‐

nection, max. (when engine is start‐

ing)

L bar 1.5 1.5 1.5

GENERAL OPERATING DATA

Number of cylinders 12 12 12

Cold start capability: air temperature

(w/o start aid, w/o preheating) (case

R °C 5 10 10

Coolant preheating, preheating tem‐

perature (min.)

R °C 32 32 32

Firing speed, from R rpm 80 80 80

Firing speed, to R rpm 120 120 120

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CAPACITIES

Number of cylinders 12 12 12

Engine coolant capacity (without cool‐

ing equipment)

R liter 160 160 160

Charge-air coolant capacity, engine

side

R liter 40 40 40

Engine oil at initial filling (standard oil

system) (Option: max. operating incli‐

nations)

R liter 260 260 260

Oil pan capacity at dipstick mark

"min." (standard oil system) (Option:

max. operating inclinations)

L liter 160 160 160

Oil pan capacity at dipstick mark

"max." (standard oil system) (Option:

max. operating inclinations)

L liter 200 200 200

WEIGHTS / MAIN DIMENSIONS

Number of cylinders 12 12 12

Engine weight, dry (basic engine con‐

figuration acc. to scope of supply

specification)

R kg 5650 5650 5650

ACOUSTICS

Number of cylinders 12 12 12

Exhaust noise, unsilenced, BL (free-

field sound pressure level Lp, 1m dis‐

tance, ISO 6798, +3dB(A) tolerance)

R dB(A) 115 118 115

Engine surface noise with attenuated

intake noise (filter), BL, (free-field

sound-pressure level Lp, 1m dis‐

tance, ISO 6798+2dB(A) tolerance)

R dB(A) 106 108 106

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3.2 12V 4000 engine data, continuous operation, variable 3B,

emissions optimized w/o certificate

Explanation

Abbr. Meaning

DL Ref. value: Continuous power

BL Ref. value: Fuel stop power

A Design value

G Guaranteed value

R Guideline value

L Limit value, up to which the engine can be operated without changes (e.g. of power set‐

ting)

N Not yet defined value

- Not applicable

X Applicable

REFERENCE CONDITIONS

Engine model 12V

4000 G21R

12V

4000 G41R

Application group 3B 3B

Intake air temperature °C 25 25

Charge-air coolant temperature °C 55 55

Barometric pressure mbar 1000 1000

Site altitude above sea level m 100 100

POWER-RELATED DATA (power ratings are net brake power as per ISO 3046)

Number of cylinders 12 12

Engine rated speed A rpm 1800 1800

Continuous power ISO 3046 (10% overload

capability, design power DIN 6280, ISO

8528)

A kW 1246 1246

GENERAL CONDITIONS (for maximum power)

Number of cylinders 12 12

Intake air depression (new filter) A mbar 30 30

Intake air depression, max. L mbar 50 50

Exhaust pressure A mbar 30 30

Exhaust pressure, max. L mbar 51 51

CONSUMPTION

Number of cylinders 12 12

Lube oil consumption after engine run-in (B

= hourly fuel consumption)

R % of B 0.5 0.5

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MODEL RELATED DATA (basic design)

Number of cylinders 12 12

Cylinder arrangement: V angle Degrees (°) 90 90

Bore mm 165 165

Stroke mm 190 190

Displacement per cylinder liter 4.06 4.06

Displacement, total liter 48.7 48.7

Compression ratio 15.5 15.5

Number of inlet valves per cylinder 2 2

Number of exhaust valves per cylinder 2 2

Standard flywheel housing flange (engine

main PTO)

SAE 00 00

COMBUSTION AIR / EXHAUST GAS

Number of cylinders 12 12

Charge air pressure before cylinder, BL R bar ABS 3.1 3.1

COOLING SYSTEM (HT circuit)

Number of cylinders 12 12

Coolant temperature (at engine outlet to

cooling equipment)

A °C 95 95

Coolant temperature after engine, alarm R °C 97 97

Coolant temperature after engine, shutdown L °C 99 99

Coolant antifreeze content, max. L % 50 50

Pressure loss in external raw water system,

max.

L bar 0.7 0.7

COOLING SYSTEM (LT circuit)

Number of cylinders 12 12

Coolant temperature before intercooler (at

engine inlet from cooling equipment)

A °C 55 55

Coolant antifreeze content, max. L % 50 50

Pressure loss in external raw water system,

max.

L bar 0.7 0.7

LUBE OIL SYSTEM

Number of cylinders 12 12

Lube oil temperature before engine, from R °C 85 85

Lube oil operating temperature before en‐

gine, to

R °C 95 95

Lube oil temperature before engine, alarm R °C 95 95

Lube oil operating pressure before engine,

from

R bar 5.0 5.0

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Number of cylinders 12 12

Lube oil operating pressure before engine,

R bar 6.0 6.0

Lube oil pressure before engine, alarm R bar 4.5 4.5

Lube oil pressure before engine, shutdown L bar 4.0 4.0

FUEL SYSTEM

Number of cylinders 12 12

Fuel pressure at supply connection to en‐

gine, min. (when engine is starting)

L bar -0.1 -0.1

Fuel pressure at engine supply connection,

max. (when engine is starting)

L bar 1.5 1.5

GENERAL OPERATING DATA

Number of cylinders 12 12

Cold start capability: air temperature (w/o

start aid, w/o preheating) (case A)

R °C 5 10

Coolant preheating, preheating temperature

(min.)

R °C 32 32

Firing speed, from R rpm 80 80

Firing speed, to R rpm 120 120

CAPACITIES

Number of cylinders 12 12

Engine coolant capacity (without cooling

equipment)

R liter 160 160

Charge-air coolant capacity, engine side R liter 40 40

Engine oil at initial filling (standard oil sys‐

tem) (Option: max. operating inclinations)

R liter 260 260

Oil pan capacity at dipstick mark "min."

(standard oil system) (Option: max. operat‐

ing inclinations)

L liter 160 160

Oil pan capacity at dipstick mark "max."

(standard oil system) (Option: max. operat‐

ing inclinations)

L liter 200 200

WEIGHTS / MAIN DIMENSIONS

Number of cylinders 12 12

Engine weight, dry (basic engine configura‐

tion acc. to scope of supply specification)

R kg 5650 5650

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