Doosan DP126LB User Manual

DOOSAN INFRACORE GENERATOR ENGINE

Standby Prime Standby Prime

1500rpm(50Hz) 362/492 327/445 346/470 311/423

1800rpm(60Hz) 402/547 366/498 378/514 342/465

Ratings Definitions

The power ratings of Emergency Standby and Prime are in accordance with ISO 8528.
Fuel Stop power in accordance with ISO 3046.
Electric power (kWe) must be considered cooling fan loss, alternator efficiency, altitude derating and ambient temperature.

STANDBY POWER RATING is applicable for supplying emergency power for the duration of the utility power outage.

No overload capability is available for this rating. A standby rated engine should be sized for a maximum of an 80% average
load factor and 200 hours of operation per year. This includes less than 25 hours per year at the Standby Power rating.

PRIME POWER RATING is available for an unlimited number of hours per year in variable load application. Variable load

should not exceed a 70% average of the Prime Power rating during any operating period of 24 hours. The Total operating
time at 100% Prime Power shall not exceed 500 hours per year. A 10% overload capability is available for a period of 1 hour
withing a 12 hour period of operation. Total operating time at the 10% overload power shall not exceed 25 hours per year.

◎ GENERAL ENGINE DATA

ㅇEngine Model

DP126LB

ㅇEngine Type

4-Cycle, In-line, 6-Cylinder Diesel, water cooled, Turbo charged & intercooled

ㅇBore x stroke

123 x 155 mm

ㅇDisplacement

11.051 liters

ㅇCompression ratio 17.2 : 1

ㅇRotation

Counter clockwise viewed from Flywheel

ㅇFiring order

1-5-3-6-2-4

ㅇInjection timing 17±1

ㅇDry weight 1008 Kg

ㅇDimension (LxWxH)

1,426 x 1,096 x 1,295 mm

ㅇFly wheel housing

SAE NO.1M

ㅇFly wheel

Clutch NO.14M

ㅇNumber of teeth on flywheel

106

◎ ENGINE MOUNTING

Maximum Bending Moment at Rear Face to Block

1325 NㆍM

◎ EXHAUST SYSTEM

Maximum Back Pressure 5.9 kPa

◎ AIR INDUCTION SYSTEM

Maximum Intake Air Restriction

. With Clean Filter Element

2.16 kPa

. With Dirty Filter Element

6.23 kPa

ㅇMax. static pressure after Radiator

0.125 kPa

Ratings

( kWm/PS)

Gross Engine Output

Net Engine Output

DP126LB

Printed in July 2017 Medium & Large Engine Design Team_DP126LB

◎ COOLING SYSTEM

Water circulation by centrifugal pump on engine.

ㅇCooling method

Fresh water forced circulation

ㅇCoolant capacity

Engine Only : Approx. 23 lit., With Radiator : Approx.51 lit.(standard)

ㅇCoolant flow

540 liters / min

ㅇPressure Cap

90 kPa

ㅇWater Temperature

- Maximum for standby and Prime

110℃

- Before start of full load

40.0℃

ㅇWater pump

Centrifugal type driven by Pulley

ㅇThermostat Type and Range

Wax – pellet type, Opening temp. 82°C , Full open temp. 95°C

ㅇCooling fan

Blower type, Plastic , 810 mm diameter, 7 blade

ㅇMax. external coolant system restriction

Not Available

◎ LUBRICATION SYSTEM

Force-feed lubrication by gear pump, lubricating oil cooling in cooling water circuit of engine.

ㅇLub. Method

Fully forced pressure feed type

ㅇOil pump

Gear type driven by crank-shaft gear

ㅇOil filter

Full flow, cartridge type

ㅇOil capacity

Max. 44 liters , Min. 20 liters

ㅇLub oil pressure

Idle Speed : Min 100 kPa

Governed Speed : Min 300 kPa

ㅇMaximum oil temperature

120℃

ㅇAngularity limit

Front down 10 deg , Front up 10 deg , Side to side 22.5 deg

ㅇLubrication oil

Refer to Operation Manual

◎ FUEL SYSTEM

Bosch type in-line pump with integrated, electromagnetic actuator.

ㅇInjection pump

WEIFU In-line "P" type

ㅇGovernor

Electric type ( all speed control )

ㅇSpeed drop

G2 Class ( ISO 8528 )

ㅇFeed pump

Double action plunger type pump on injection pump

ㅇInjection nozzle

Multi hole type

ㅇOpening pressure

30 MPa

ㅇFuel filter

Main(On Engine) : Full flow, High efficiency dust in fuel filter, cartrudge type

Pre(Loosed Part) : Full flow, cartridge type with water drain valve

ㅇMaximum fuel inlet restriction

10 kPa

ㅇMaximum fuel return restriction

60 kPa

ㅇFuel feed pump Capacity

315 liters / hr

ㅇUsed fuel

Diesel fuel oil

◎ ELECTRICAL SYSTEM

ㅇBattery Charging Alternator

24V x 80A alternator

ㅇVoltage regulator

Built-in type IC regulator

ㅇStarting motor

24V x 6.0 kW

ㅇBattery Voltage

24V

ㅇBattery Capacity

200 Ah (recommended)

ㅇStarting aid (Option)

Block heater, Air heater

Printed in July 2017 Medium & Large Engine Design Team_DP126LB