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Perkins 4012-46TAG1A Diesel Engine Technical Data

Nov. 15, 2017

According to the experts, the global diesel generator market for industrial applications will grow at a care of 4.65% during the period to 2017 - 2021. You can see that electricity plays an important role in our daily life. The modern world needs electricity to operate almost everything, ranging from transportation systems, computer databases or other fields. Perkins, as a global engine brand, is widely used in various fields as well as every country. There is no doubt that Perkins generator will be one of the prominent vendors in the diesel genset market.


Perkins engine is divided into several series that we talked about before. In this article, you will learn the specific technical data of Perkins 4012-46TAG1A engine.


Basic Technical Data

Number of cylinders

12

Cylinder arrangement

Vee, 60°

Cycle

4 stroke

Induction system

Turbocharged

Combustion system

direct injection

Compression ratio

13:1

Bore x  Stroke

160 x 190 (mm)

Cubic capacity

45·842 litres

Direction of rotation

anti-clockwise when viewed from flywheel

Firing order

1A, 6B,   5A, 2B, 3A, 4B, 6A, 1B, 2A, 5B, 4A, 3B

Cylinder 1

furthest from flywheel

 

Note: Cylinders designated ‘A’ are on the right hand side of the engine when viewed from the flywheel

end.

 

Approximate weights

Description

unit

Tropical

Temperate

Engine (dry)

 

Kg

4400

4400

Electropak (wet) + fuel cooler

6086

5949

Electropak (wet) - fuel cooler

6070

5933

 

Overall dimensions of ElectropaK

Description

unit

Tropical

Temperate

Height

 

mm

2258

2255

Length

3915

3916

Width

2198

1775

 

Emissions Compliant engines

 

Cyclic irregularity for engine/flywheel maximum

4012-46TAG1A

1:714

Ratings

Steady state speed stability at constant load

± 0·25%

Note: Electrical  rating are based on average alternator efficiency and are for guidance only (0.8 power factor being used).

Operating point

Engine speed

1500 rev/min

Cooling water exit temperature

< 98 °C

Fuel data

to conform to BS2869 class A2 or BS EN590

Performance:

All data based on operation to ISO 3046/1, BS 5514 and DIN 6271 standard reference

conditions

Noise:

For engines operating in ambient conditions other than the standard reference conditions stated below, a suitable de-rate must be applied. De-rate tables for increased ambient temperature and/or altitude are

available, please contact Perkins Applications Department.

Test conditions

Air temperature

25 °C

Barometric pressure

100 kPa

Relative humidity

30%

Air inlet restriction at maximum power (nominal)

2,5 kPa

Exhaust   back pressure at maximum pressure (nominal)

3,0 kPa

Fuel temperature (inlet pump)

58 °C maximum

 

General installation

 

4012-46TAG1A - Temperate

Designation

Units

Type of operation and application

Baseload power

Prime power

Standby power

Gross   engine power

kWm

973

1212

1327

Fan and   battery charging alternator

power

kW

42

Nett   engine power

kWm

931

1170

1285

Brake mean   effective pressure (gross)

kPa

1694

2110

 

2309

Combustion   air flow at ISO conditions

m³/min

85

100

110

Exhaust   gas temperature (max) after

turbo

°C

470

Exhaust   gas flow (max) @ atmospheric

pressure

m³/min

280

Boost   pressure ratio

-

2,6

2.9

3.2

Mechanical   efficiency

%

89

91

92

Overall   thermal efficiency (nett)

%

41.0

41.5

41

Friction   power and pumping losses

kWm

120

Mean   piston speed

m/s

9.5

Engine   coolant flow

l/min

1020

Typical   Genset electrical output (0.8pf)

kVA

1106

1389

1526

kWe

884

1112

1221

Assumed   alternator efficiency

%

 

95

 

4012-46TAG1A - Tropical


Designation

Units

Type of operation and application

Baseload  power

Prime power

Standby power

Gross   engine power

kWm

973

1212

1327

Fan and   battery charging alternator

power

kW

64

Nett   engine power

kWm

909

1148

1263

Brake mean   effective pressure (gross)

kPa

1694

2110

 

2309

Combustion   air flow at ISO conditions

m³/min

85

100

110

Exhaust   gas temperature (max) after

turbo

°C

470

Exhaust   gas flow (max) @ atmospheric

pressure

m³/min

280

Boost   pressure ratio

-

2,60

2.93

3.20

Mechanical   efficiency

%

89

91

92

Overall   thermal efficiency (nett)

%

41.0

41.5

41.0

Friction   power and pumping losses

kWm

120

Mean   piston speed

m/s

9.5

Engine   coolant flow

l/min

1020

Typical   Genset electrical output (0.8pf)

kVA

1080

1364

1500

kWe

864

1091

1200

Assumed alternator   efficiency

%

 

95

 

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 over each 24 hour period. A 10% overload is available for 1 hour in every 12 hours.

Standby power

Limited to 500 hours annual usage with an average load factor of 80% of the published Standby Power rating over each 24 hour period. Up to 300 hours of annual usage may be run continuously. No overload is permitted on Standby Power.


Energy balance

 

4012-46TAG1A – Temperate


Designation

Units

Baseload power

Prime power

Standby power

Energy

in fuel

KW

2328

2962

3330

in power output (gross)

973

1212

1327

to cooling fan

42

in power output (nett)

931

1170

1285

to exhaust

750

1020

1150

to coolant and oil

335

365

413

to radiation

70

75

100

to charge coolers

200

290

340

 

4012-46TAG1A – Tropical: The data is almost same to Temperate. Only difference between energy to cooling fan (64) and energy in power output(baseload power – 909, prime power – 1148, standby power – 1263) .

 

Cooling System

Recommended coolant: 50% inhibited ethylene glycol or 50% inhibited propylene glycol and 50% clean 

fresh water. For combined heat and power systems (CHP) and where there is no likelihood of ambient 

temperature below 10 °C, then clean ‘soft’ water may be used, treated with 1% by volume of Perkins 

inhibitor in the cooling system. The inhibitor is available from Perkins.

Maximum pressure in crankcase water jacket

170 kPa

Maximum top tank temperature (standby)

98 °C

Maximum static pressure head on pump

7 m

Total   coolant capacity

Electrounit (engine only)

73 litres

Electropak   (engine and radiator)

-temperate

207 litres

-tropical

210 litres

Maximum permissible restriction to coolant pump flow

20 kPa

Thermostat operating range

71 - 85 °C

Temperature rise across the engine (standby power) with inhibited coolant

8 °C

Coolant temperature shutdown switch setting

101 °C rising

Coolant immersion heater capacity (2 off)

4 kWe each

Radiator   - Temperate

Radiator   face area

2,57 m²

Material and number of rows:

-charge air and water jacket.

copper, 4 rows

Fins per inch and material:

-charge air and water jacket

brass, 12 rows

Width of matrix

1·608 m

Height of matrix

1·601 m

Weight of radiator

1117 kg

Pressure cap setting (min)

70 kPa

Radiator - Tropical

Radiator face area

3,46 m²

Width of matrix

2,10 m

Height of matrix

1,65 m

Weight of radiator

1620 kg

Water jacket cooling data (Temperate and Tropical)

Coolant flow

1020 litres/min

Coolant exit temperature (max)

98 °C

Coolant inlet temperature (min)

thermostatic control

Coolant inlet temperature (max)

90 °C

Coolant pump

Speed

2110 rev/min

Method of drive

gear

Fan

Type

axial flow

Diameter

-Temperate

1530 mm

-Tropical

1600 mm

Number of blades

12

Material

Aluminium

Drive ratio

0·93:1

 

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