QSB3.9-P115 (85kw@2900rpm)

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Engine Model: QSB3.9-P115
Engine Type: Electronic Engine
Displacement: 3.9 L
Rated Speed: 2900 rpm
Rated Power: 85 kw
Power Type: Prime Power
Emission Standard: China III/EU Stage IIIA
Fuel Consumption: 198g/kW.h – 245g/kW.h
Cooling System water cooled
Dimension(L*W*H): 778*753*882 mm
Net Weight: 251 kg
Lead Time: 15-30 working days
Payment Term: T/T;L/C
Country of Original: China
engine image
Cummins QSB3.9-P115 Pump Engine

SpecificationCurveConfiguration & OptionsQSB3.9 SeriesPumpmacEMAC
General Information of Cummins Diesel Pump Engine
Engine Model QSB3.9-P115
Engine Type Electronic Engine
Engine Structure 4 cycle, in-line
Displacement 3.9 L
Bore 102 mm
Stroke 120 mm
CPL Number CPL4854
Net Weight (with flywleel & alternator) 251 kg
Overall Diemension(L*W*H) 778*753*882 mm
Technical Specification of Cummins Diesel Pump Engine
Emission China III/EU Stage IIIA
Aspiration Turbocharged & Air-air aftercooled
Fuel System HPCR
Eletrical System 12/24V
Lowest Starting Temp.(with/without auxiliary system) N/A
Engine Cooling Fluid Volume N/A
Lubricating Oil Volume N/A
Performance Data of Cummins Diesel Pump Engine
Rated Power/Speed 85kw/2900rpm
Max.Torque/Speed 380 N.m/1800rpm
Fuel Consumption @ Rated Power 198g/kW.h – 245g/kW.h
Min. Idel Speed 950 rpm
Max. Continuous Running Altitude 2000 m
performance curves

PumpMac integrates pump-driven engines, air intake system, exhuast system, cooling system, engine control panel, WPT PTO solution, Advance Gearbox solution, chassis as options for our pump-driven power pack, the intelligent control modules and water pumps are also available under customers’ requirements.

Till now, only DCEC-Dongfeng Cummins Engine Company and CCEC-Chongqing Cummins Engine Company have official pump-driven series engines in their ranges of products, both DCEC and CCEC have mechanical and electronic engines that able to apply to different types of pump applications. The complete engine from Cummins factory are comes with standard scopes of supply, mainly includes below:

Fuel Injection System Flywheel Flywheel Housing Turbocharger
Intake Manifold Exhaust Manifold Starter Motor Alternator
Clamp & Hose Manual & Documents Oil Filter & Fuel Filter Water Pump & Oil Pump
We also provide customize power pack with below options:
Engine Options
Air Intake System.
(Air filter assembly)
Exhaust System
(Muffler assembly)
Cooling System
(Radiator or heat exchanger)
electric system
Two sets of batteries
(Another standby set)
Twin Starter System
(Spring or air starter)
Air Inlet Shut-off Vavlue
Power Pack Options
  • Advanced design and sophisticated manufacturing, adapt to a variety of harsh working conditions, high strength, heavy load capacity
  • Cylinder block, cylinder head adopts integrated design.To prevent the occurrence of drowning and oil gushing in 7 engines, the parts are about 40% less than other similar engines, and the failure rate is greatly reduced
  • The cylinder bore is designed with platform honing, and the perfect geometry prevents oil leakage.And adopt new piston ring assembly and sealing gasket crimping and other advanced technology.Reduced oil loss
  • Three-stage combustion filter ensures balanced particulate discharge level, the main component of Baohu fuel oil system.Maximize engine life
  • The electronic control system can intelligently switch the working mode according to the environment and operating conditions, and has the functions of self-diagnosis, reporting crab and remote monitoring
  • Mature intelligent electronic control technology.Improve overall engine performance.Engine specifications can be customized according to application requirements
  • Mature intelligent electronic control technology to improve the overall performance of the engine according to the application requirements can be customized engine specifications
QSB3.9 series
Rated Speed(rpm)
Rated Power (kw)


3.9 2900 36


3.9 2900 60


3.9 1500 63


3.9 1500 79


3.9 2900 85

Pumpmac Introduction

PUMPMAC is one of the sub-brands of EMAC, focusing on all types of water pump applications, supplying pump drive engine, water pump, intelligent water pump control system and high reliability and cost-effective driven power pack solutions etc.

As officially authorized water pump OEM packager of world well-known brand such as Cummins and Deutz, EMAC provides customers with various options, including Cummins, Deutz, Perkins, Isuzu, Yuchai, Yangdong, Quanchai water pump engines, WPT PTO, advanced gearbox, water pump and the complete pump-driven power pack that integrates with air-intake system, exhaust system, cooling system and control system etc.

PumpMac provides customers with high reliability and cost-effective driven power pack solutions, and our products are widely applied to fire fighting, petrochemical explosion-proof, construction site, mine pumping, underwater operations, factory water supply and drainage, agricultural irrigation, pond culture, urban drainage, municipal repair, emergency rescue and other scenarios.

Warranty1000 running hours or 12 months warranty according to which comes first.
Promise Both back by our TSI quality control system and “123” after-sales system are guaranteed from production to application.
Support: Customized products supplying, marketing system support, technical support and after-sales service training.

pump engine pump PTO advance gearbox power pack



EMAC Group Limited was established in Hong Kong in 2010 with more than 10 years experience, and aims to be a solid one-stop supplier in the power machinery industry. EMAC operates four overseas subsidiaries and owns 8 self-registered trademarks. Our products are widely used in energy, maritime, automotive, construction, railways and spare parts.

EMAC has strategically partnered with highly leading companies and integrated the prospective businesses across all platforms, and become official authorized distributor. These star enterprises include CRRC Group, Fast Gear, Dongfeng Dana Axle, KangNi Technology (KNT), Hispeed Boat (HSB), Advance Gearbox, Foton Auto, DIMA Auto etc.

After years of development and accumulation, EMAC has more than 8,000 business partners in more than 100 countries and regions. With the rapid development of the world economic integration, we look forward to forging ahead in the field of machinery equipment with more global business partners, to enjoy a wonderful business career, to realize our dream of “Drive globalization to create a better world”.

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