6M21

Cylinder diameter
127 mm
Arrangement and number of cylinders
R6
Piston stroke
165 mm
Working volume
12.5 l
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Models

Diesel engine model

Nominal speed, min-1

Engine power

Generator power

Boost type

Control type

Prime Power (PRP), kW

Emergency Power (ESP), kW

Prime Power (PRP)

Emergency Power (ESP)

kW

kVA

kW

kVA

6M21G385/5

1500

327

362

300

375

320

400

T/V-V

El.fuel pump

6M21G440/5

1500

345

382

320

400

350

430

T/V-V

El.fuel pump

6M21G500/5

1500

389

430

350

430

400

500

T/V-V

CR

6M21G550/5

1500

436

476

400

500

450

550

T/V-V

CR

6M21G330/6

1800

318

353

300

375

320

400

T/V-V

El.fuel pump

6M21G390/6

1800

375

416

350

430

380

470

T/V-V

El.fuel pump

6M21G400/6*

1800

386

428

360

450

400

500

T/V-V

El.fuel pump

6M21G460/6

1800

430

476

400

500

450

550

T/A-A

CR

Designation: T/A-A = Turbocharger / CVD type "Air-to-Air", El.TNVD – mechanical fuel injection pump with electronic regulator, CR– common rail fuel system.

* : Engines are designed for Emergency Standby Power (ESP) only. The power (PRP) listed is for reference only.

Standard Equipment

Cylinder Block and Piston Group

Air Intake and Exhaust System

Cast Iron Cylinder Block. Inspection hatches for servicing each cylinder.

Power structure of the crankcase/oil pan.

Flywheel housing with additional space for installing a turning device.

Individual cylinder heads. 4 valves per cylinder.

Forged crankshaft from hardened steel with induction hardened main journals, connecting rod journals and fillets.

Lightweight pistons with cooling and high-quality piston rings.

Overhead turbochargers optimized for the generator set.

Air filters with clogging indicators.

Thermal insulation of turbochargers, exhaust manifolds and pipes.

Fuel system

Filter-moisture separator assembly with transparent flask and water sensor, coarse and fine fuel filters.

Electric fuel pump built into the filter block.

Electrical system

Electric starter 24V.

Charging generator 55A.

Oil pressure and coolant temperature sensors.

Flywheel housing and flywheel

SAE 1 flywheel housing and 14” flywheel.

Cooling system

Cooling system with belt drive of coolant pump and pusher fan.

Engines are supplied with cooling block and cooling system pipes.

Lubrication system

Full-flow fine oil filters with bypass valve.

Water-oil heat exchangers.

Centrifugal oil filters.