DP126LB

DP126LB

DP126LB

Product catalog summary
Overview: This document provides technical specifications and operational guidelines for the Doosan Infracore Generator Engine, specifically the DP126LB model. It includes details on power ratings, engine data, and various system components.
Power Ratings: The engine's power ratings are defined according to ISO 8528 and ISO 3046 standards. Standby Power is for emergency use during utility outages, with no overload capability and limited to 200 hours per year. Prime Power is for variable load applications, allowing unlimited hours but with a 70% average load limit and a 10% overload capability for short durations.
General Engine Data: The DP126LB is a 4-cycle, in-line, 6-cylinder diesel engine with turbocharging and intercooling. It has a displacement of 11.051 liters and a compression ratio of 17.2:1. The engine's dry weight is 1008 kg, and its dimensions are 1,426 x 1,096 x 1,295 mm.
Exhaust and Air Induction Systems: The exhaust system has a maximum back pressure of 5.9 kPa. The air induction system specifies maximum intake air restrictions with clean and dirty filter elements.
Cooling System: The engine uses a centrifugal pump for water circulation, with a coolant capacity of 23 liters for the engine alone and 51 liters with the radiator. The maximum water temperature for standby and prime operations is 110°C.
Lubrication System: The engine employs a force-feed lubrication system with a gear pump. The oil capacity ranges from 20 to 44 liters, and the maximum oil temperature is 120°C.
Fuel System: The engine uses a Bosch-type in-line pump with an electric governor. The fuel system includes a high-efficiency dust filter and a double-action plunger type feed pump.
Electrical System: The engine features a 24V x 80A alternator and a 24V x 6.0 kW starting motor. The recommended battery capacity is 200 Ah.
Valve System: The engine has an overhead valve type with two intake and two exhaust valves per cylinder. Valve timing details are provided for both intake and exhaust valves.
Performance Data: The document includes detailed performance metrics such as engine speed, power output, and specific fuel consumption under various load conditions. It also provides data on heat rejection and sound pressure levels.
Additional Information: Conversion tables and contact information for Doosan Infracore Co., Ltd. are included. Specifications are subject to change without notice.
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Catalog excerpts

DP126LB-1

DOOSAN INFRACORE GENERATOR ENGINE Gross Engine Output 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 ㅇEngine Type 4-Cycle, In-line, 6-Cylinder Diesel, water cooled, Turbo charged & intercooled ㅇCompression ratio Counter clockwise viewed from Flywheel ㅇFiring order ㅇInjection timing ㅇDry weight ㅇDimension (LxWxH) ㅇFly wheel housing ㅇFly wheel ㅇNumber of teeth on flywheel ◎ ENGINE MOUNTING Maximum Bending Moment at Rear Face to Block ◎ EXHAUST SYSTEM Maximum Back Pressure ◎ AIR INDUCTION SYSTEM Maximum Intake Air Restriction . With Clean Filter Element . With Dirty Filter Element ㅇMax. static pressure after Radiator Printed in July 2017 Mediu

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DP126LB-2

◎ COOLING SYSTEM Water circulation by centrifugal pump on engine. ㅇCooling method Fresh water forced circulation ㅇCoolant capacity ㅇCoolant flow rate ㅇPressure Cap Engine Only : Approx. 23 lit., With Radiator : Approx.51 lit.(standard) ㅇWater Temperature - Maximum for standby and Prime - Before start of full load ㅇWater pump Centrifugal type driven by Pulley ㅇThermostat Type and Range Wax – pellet type, Opening temp. 82°C , Full open temp. 95°C Blower type, Plastic , 810 mm diameter, 7 blade ㅇMax. external coolant system restriction ◎ LUBRICATION SYSTEM Force-feed lubrication by gear pump, lubricating...

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DP126LB-3

◎ VALVE SYSTEM ㅇ Type Overhead valve type Intake 2, exhaust 2 per cylinder ㅇ Valve lashes at cold ㅇ Valve timing Opening -. Intake valve -. Exhaust valve Prime Power Standby Power ㅇGoverned Engine speed ㅇEngine Idle Speed ㅇOver speed limit ㅇGross Engine Power Output ㅇBreak Mean effective pressure Mpa ㅇMean Piston Speed ㅇFriction Power ㅇ Specific fuel consumption ㅇFan Power ㅇSound Pressure at 1m from the each side of Cylinder Block (without Fan) The all data and the specific fuel consumption are based on ISO 3046/1, Standard reference conditions are in accordance with 298 K(25˚ Celsius) air temperature,...

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DP126LB-4

◆ CONVERSION TABLE in. = mm x 0.0394 PS = kW x 1.3596 psi = kg/cm2 x 14.2233 in3 = lit. x 61.02 hp = PS x 0.98635 lb = kg x 2.20462 kW = Kcal/sec x 0.239 lb/ft = N.m x 0.737 U.S. gal = lit. x 0.264 kW = 0.2388 kcal/s lb/PS.h = g/kW.h x 0.00162 cfm = m3/min x 35.336 Mpa = Pa x 1000 = bar x 10 Doosan Infracore Co., Ltd. 21st Floor, Doosan Tower, 18-12, Euljiro 6-ga, Jung-gu, Seoul, Korea. ※ Speccifications are subject to change without prior notice Printed in July 2017 Medium & Large Engine Design Team_DP12

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.