cummins

Cummins 4BT3.9 Engine

Cummins 4BT3.9 Engine is a small horsepower engine which the power ranges from 80HP to 140HP. In mini equipment industry, Cummins 4BT3.9 Engines are used in Construction Machinery, Automotive Equipment, Generator Power Unit Marine Industry. The engine was designed without cylinder liner, intake/exhaust valve insert, valve guide, cam shaft bushing, so Cummins 4B3.9 engine has less parts when comparing with the other brand engines. In order to meet different market / equipment needs, Cummins developed different engine models. While according to the type of aspiration, these engines are separated as followings:

Cummins 4B3.9 (Nature Aspiration)
Cummins 4BT3.9 (Turbocharged)
Cummins 4BTA3.9 (Turbocharged, Charged Air Cooled)
Cummins 4BTAA3.9 (Turbocharged, Charged Air Cooled)

Combine with the technology from Cummins factory, we provide a few solutions for your machinery. Not only Cummins 4BT3.9 engine assy but also 4BT3.9 long block engine will be your smart choice. So that you will get your equipment into work in a very short breakdown time.

New Cummins 4BT3.9 Engine Assy

CO-MACH offer the New Cummins 4BT3.9 Engines and our new engines will be built with the following parts:

New Cylinder Head Assy with Valves mounted
New Cylinder Block
New Crankshaft
New Camshaft
New Pistons, New Piston Pins, New Piston Ring Sets
New Connecting Rods, Bearings
New Fuel Injectors
New Fuel Injection Pump
New Turbocharger
New Rocker Assemblies
New Lubricating Oil Pump and Water Pump
New L.O Cooler
New Fuel Filters, Water Filters, L.O Filters
New Intake and Exhaust Manifolds
New Gears, New Gear Housings
New Starting Motor, New Alternator
New Flywheel, New Flywheel Housing
New Oil Pan
New Brackets, New Pulleys

Cummins 4BT3.9 Long Block Engines

CO-MACH manufacture Cummins 4BT3.9 Long Block Engine which Contains the following parts:

New Cylinder Head Assy with Valves mounted
New Cylinder Block
New Crankshaft
New Camshaft
New Pistons, New Piston Pins, New Piston Ring Sets,
New Connecting Rod
New Bearings
New Lubricating Oil Pump and Water Pump
New L.O Cooler, New Oil Pan
New Rocker levers etc.

Long Blocks do not apply the outer fittings. In this case, CO-MACH long blocks don’t include the followings: Fuel pumps, Turbochargers, Turbo Drains, Fuel Lines, Injectors, Lift pumps, Air Compressors, Starters, Alternators, Flywheels, Flywheel Housings, Filters etc.

Cummins 4BT3.9 for Automobile

In automotive industry, Cummins 4BT3.9 engines are popular for Passenger Bus, Coach, School Bus, RV (Recreational Vehicle), Shuttle Bus Airport Airfield Bus, Airport Luggage Cart, People Mover etc. The Cummins 4BT3.9 engines are suit for Chinese Vehicles like YUTONG, KINGLONG, DONGFENG, JAC, HIGER … In general, Cummins 4BT3.9 automotive engine models are as below:

Engine Model	Emission Standard	Rated Power/Speed (KW/rpm)	Peak Torque (N.m/rpm)	Aspiration
4BTAA3.9-125 EQB125-20	Euro II	92@2800	410@1500	Turbocharged, Aftercooled
4BTAA3.9-140 EQB140-20	Euro II	103@2700	502@1500	Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Industrial Machinery:

In industrial market, Cummins 4BT3.9 Engines are applied to the small horsepower equipment like: Excavator, Loader, Bulldozer, Skid Steer, Roller, Tractor, Cranes, Forklift, Boom lift, Scissor Lift, Street Sweeper, Compressor … In China, the 4BT3.9-C engines are supplied to DOOSAN Shanghai, LIUGONG, LIU-TECH Air Compressor, ZHENGTAI, SANY, DYNAPAC, XGMA … In general, Cummins 4BT3.9 Industrial engines are shown as below:

Engine Model	Emission Standard	Rated Power/Speed (KW/rpm)	Peak Torque (N.m/rpm)	Aspiration
4BTA3.9-C80-II	Euro II	60@2200	350@1500	Turbocharged, Aftercooled
4BTA3.9-C100-II	Euro II	74@2200	380@1500	Turbocharged, Aftercooled
4BTA3.9-C110-II	Euro II	82@2200	460@1400	Turbocharged, Aftercooled
4BTA3.9-C125-II	Euro II	93@2300	475@1500	Turbocharged, Aftercooled
4BTA3.9-C130-II	Euro II	97@2500	475@1500	Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Fire Emergency Pump Driven Engine

In emergency situation, the Fire Emergency pump should be given a reliable and durable power, So that the emergency situation can get efficiently controlled. Cummins 4BT3.9 Engines act as an important part of power source from fire emergency equipment. Generally, the Cummins 4BT3.9 Engine models for Fire Emergency pumps are shown as below:

Engine Model	Rated Power/Speed (KW/rpm)	Fuel Pump	Aspiration
4BTA3.9-P80	58@1500	Mechanical Pump	Turbocharged, Aftercooled
4BTA3.9-P90	67@1800	Mechanical Pump	Turbocharged, Aftercooled
4BTA3.9-P100	70@1500	Mechanical Pump	Turbocharged, Aftercooled
4BTA3.9-P110	80@1800	Mechanical Pump	Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Marine Engine

Currently, in order to supply the power to the marine vessels, diesel engine is the first choice of the main engine, generator engine and emergency generator engine in marine industry. The marine Tug boat as well as supply boat, Bunkering vessels, Ferries, Fishing boat choose Cummins 4BT3.9 Engines as their power supply driven engine. Generally, Cummins 4BT3.9 Marine engines models are as followings:

Engine Model	Rated Power/Speed (KW/rpm)	Standby Power/Speed (KW/rpm)	Aspiration
4BT3.9-GM47	47@1500	52@1500	Turbocharged, Aftercooled
4BT3.9-GM55	55@1500	61@1500	Turbocharged, Aftercooled
4BT3.9-GM65	65@1800	72@1800	Turbocharged, Aftercooled

Cummins 4B3.9 Engines for Generator Set

In fact, Cummins engines are known as their reliability and durability. Cummins 4BT3.9 engines make your continuous power unit or a standby power unit working smoothly. Generally, Cummins 4BT3.9 engines models for generator sets are as followings:

Engine Model	Rated Power/Speed (KW/rpm)	Standby Power/Speed (KW/rpm)	Governor Type
4B3.9-G1	24@1500	N/A	Mechanical Governor
4B3.9-G1	27@1500	N/A	Mechanical Governor
4B3.9-G2	24@1500	30@1800	Electronic Governor
4B3.9-G2	27@1500	33@1800	Electronic Governor
4BT3.9-G1	36@1500	N/A	Mechanical Governor
4BT3.9-G1	40@1500	N/A	Mechanical Governor
4BT3.9-G1	86@1500	N/A	Mechanical Governor
4BT3.9-G1	92@1500	N/A	Mechanical Governor