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QSK78-C3500 Industrial Engine ( Imported )

CCEC QSK78-C3500 Industrial Engine have excellent performance characteristics. It has a compression ratio of 15.5 : 1, a displacement of 4,735 cubic inches (77.6 liters) .

CCEC QSK78-C3500 Industrial Engine offers a wide rev range, including a maximum low idle speed of 1,400 rpm and a minimum low idle speed of 750 rpm. In addition, the engine adopts HPI Electronic fuel system, with 2-Stg Turbo. Aftercooled and Intercooled system, ensuring efficient combustion and excellent performance.

As part of EMAC, ConeMac provides industrial power pack solution that integrated with air intake, air exhaust, cooling system, control system, transmission and hydraulic accessories, We also supplying special products such as explosion proof engine, generator and water pump set, as well as ultra-low temperature condition engine power pack.

We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advantages of CCEC QSK78-C3500 Industrial Engine

  • Advanced design and sophisticated manufacturing to adapt to various harsh working conditions! High-strength parts, strong ability to work under heavy loads.

  • Cylinder block and cylinder head adopt integrated design. The occurrence of engine water leakage and oil leakage is prevented, and the parts are about 40 % less than other similar engines. The failure rate is greatly reduced.

  • Using forged steel camshaft and crankshaft, high-strength cylinder block design, multiple parts cast on the cylinder block, high rigidity, high pressure resistance, good reliability, and longer service life.

  • The cylinder bore adopts a platform mesh honing design. The perfect geometric structure effectively prevents oil leakage, and the use of advanced technology such as new piston ring components and gasket crimping and molding reduces oil loss.

  • The five key systems of the electronically controlled engine are all developed by CCEC, and have been applied and verified in different fields around the world to ensure the excellent economy and reliability of the product.

  • By optimizing the control strategy and combining with the actual operating conditions of the equipment, the fuel economy can be further improved.

Technical Specifications

Basic Introduction of CCEC QSK78-C3500 Industrial Engine

Engine Model:QSK78-C3500
Engine Type:4 Cycle , In-line , 6 Cylinder
Displacement:77.6 L
Rated Speed:1900 RPM
Rated Power / Speed:3500 HP @ 1900 RPM
Aspiration Method:2-Stg Turbo. Aftercooled and Intercooled
Emission Standard:U.S. EPA Tier 2
Bore * Stroke:170 mm × 190 mm
Packing Size (L * W * H):5691 mm * 2305 mm * 2798 mm
Weight , Net Dry:18964 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

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Engine ModelRated PowerDisplacementAspirationCompression RatioFuel System
QSK78-C35003500 HP @ 1900 RPM4735 in3 (77.6 L)2-Stg Turbo. Aftercooled and Intercooled15.5 : 1HPI Electronic


General Infomation of CCEC QSK78-C3500  Industrial Engine
Engine ModelQSK78-C3500CPL Code3270
Curve & DatasheetFR6704Rated Power3500 HP (2610 kW) @ 1900 RPM
Compression Ratio15.5 : 1Emission CertificationU.S. EPA Tier 2
Noise Emissions Top102.9 dBaPeak Torque13771 N.m/1500 r/min
Noise Emissions Right Side104.6 dBaDisplacement4735 in3 (77.6 L)
Noise Emissions Left Side104.6 dBaFuel SystemHPI Electronic
Noise Emissions Front104.2 dBaMaximum low idle speed1400 r/min
Aspiration2-Stg Turbo. Aftercooled and IntercooledMinimum low idle speed750 r/min


Torque OutputPower OutputFuel Consumption
700 RPM3500 lb-ft4745 N-m700 RPM466 HP347 kW1500 RPM0.341 lb/hp-hr207.423 g/kW-hr
800 RPM4000 lb-ft5423 N-m800 RPM609 HP454 kW1600 RPM0.337 lb/hp-hr204.99 g/kW-hr
1000 RPM4758 lb-ft6451 N-m1000 RPM906 HP676 kW1700 RPM0.337 lb/hp-hr204.99 g/kW-hr
1200 RPM5741 lb-ft7784 N-m1200 RPM1312 HP978 kW1800 RPM0.341 lb/hp-hr207.423 g/kW-hr
1400 RPM9463 lb-ft12830 N-m1400 RPM2523 HP1881 kW1900 RPM0.346 lb/hp-hr210.464 g/kW-hr
1500 RPM10157 lb-ft13771 N-m1500 RPM2901 HP2163 kW
1600 RPM10059 lb-ft13638 N-m1600 RPM3064 HP2285 kW
1700 RPM9932 lb-ft13466 N-m1700 RPM3215 HP2397 kW
1800 RPM9799 lb-ft13286 N-m1800 RPM3358 HP2504 kW
1900 RPM9675 lb-ft13118 N-m1900 RPM3500 HP2610 kW


Engine Performance Data CCEC QSK78-C3500 Industrial Engine
 Rated PowerTorque Peak
Engine Speed1900 RPMN/A1500 RPMN/A
Output Power 3500 HP2610 kW2901 HP2163 kW
Torque9675 lb-ft13118 N-m10157 lb-ft13771 N-m
Friction Horsepower341 HP254 kWN/AN/A
Intake Manifold Pressure88 in-Hg297 kPa73 in-Hg247 kPa
Turbo Comp. Outlet Pressure90 in-Hg304 kPa74 in-Hg250 kPa
Turbo Comp. Outlet Temperature308 deg F153 deg C278 deg F137 deg C
Inlet Air Flow8800 ft3/min4153 L/s6300 ft3/min2973 L/s
Exhaust Gas Flow20200 ft3/min9533 L/s16050 ft3/min7575 L/s
Exhaust Gas Temperature805 deg F429 deg C921 deg F494 deg C
Maximum Fuel Flow to Pump4367 lb/hr1981 kg/hr2981 lb/hr1352 kg/hr
Heat Rejection to Coolant52000 BTU/min914 kWN/AN/A
Aftercooler Coolant Heat Rejection40500 BTU/min712 kWN/AN/A
Heat Rejection to Fuel2435 BTU/min43 kW93493 BTU/min1644 kW
Heat Rejection to Ambient11000 BTU/min193 kWN/AN/A
Heat Rejection to Exhaust117000 BTU/min2057 kWN/AN/A


System Technical Data of CCEC QSK78-C3500 Industrial Engine
Intake Air System

Maximum allowable air temperature rise over ambient at Intake Manifold (Naturally

Aspirated Engines) or Turbo Compressor inlet (Turbo-charged Engines): (This

parameter impacts emissions, LAT and/or altitude capability)

20 delta deg F11.1 delta deg C
Low Temperature Aftercooling SystemCoolant temperature from the Aftercooler outlet @ Maximum engine coolant out temperature at Limiting Ambient Temperature (1P-2L)N/A deg FN/A deg C
Coolant temperature from the Aftercooler outlet @ 25C (77F) ambient137 deg F58 deg C
Maximum coolant temperature into the Aftercooler @ 25C (77F) ambient117 deg F47 deg C
Maximum coolant temperature into Aftercooler @ Limiting Ambient conditions153 deg F67 deg C
Maximum coolant temperature for engine protection controls215 deg F102 deg C
Maximum coolant operating temperature at engine outlet (max. top tank temp):212 deg F100 deg C
Exhaust SyetemMaximum exhaust back pressure:2 in-Hg7 kPa
Recommended exhaust piping size (inner diameter):12 in305 mm
Lubrication SystemNominal operating oil pressure minimum low idle30 psi207 kPa
Nominal operating oil pressure maximum rated speed72 psi496 kPa
Minimum engine oil pressure for engine protection devices minimum low idle21.9 psi151 kPa
Fuel SystemFuel cooling requirements (with diesel fuel)  
Maximum heat rejection to return fuel at max. coolant and inlet fuel temperature:2635 BTU/min46 kW
Fuel return flow rate of:4601 lb/hr2087 kg/hr
Fuel return temperature prior to cooler:225 deg F107 deg C
Maximum supply fuel flow:5878 lb/hr2666 kg/hr
Maximum return fuel flow:4601 lb/hr2087 kg/hr
Engine fuel compatibility (consult Service Bulletin #3379001 for appropriate use of other fuels) DF1, DF2, B5, B20
Maximum fuel inlet pressure:3 psi21 Kpa
Cranking System (Cold Starting Capability)Unaided Cold Start Minimum cranking speed132 RPM
Unaided Cold Start Minimum ambient temperature for unaided cold start10 deg F-12.2 deg C
Aided Cold Start Minimum ambient temperature with Ether only-25 deg F-32 deg C
Aided Cold Start Minimum ambient temperature with coolant and lube heater only-25 deg F-32 deg C
 Cold starting aids available Ether, Block Heater, Oil Pan Heater
 Maximum parasitic load at 10 deg F @  


Scopes of Supply of CCEC QSK78-C3500 Industrial Engine

Fuel System1. Fuel Transfer PumpExhuast System1. Exhuast Manifold
2. High-Pressure Fuel Pump2. Turbocharger
3. Fuel Filter3. Exhuast Elbow
Air Intake System1. Air Intake ManifoldStarting System1. Starter Motor
2. N/A2. Starter Rely
Cooling System1. Water PumpPower Output System1. Flywheel
2. Engine Fan2. Standard Flywheel Housing
3. Standard Radiator3. N/A
Lubricating System1. Oil PumpCharging System1. Charging Alternator
2. Oil Filter2. N/A
Engine Shut-Down System1. Engine Fuel Shut-Off SolenoidrEngine Mounting System1. Engine Mouting Bracket
Engine Auiliary Accessories1. Air Compressor

Optional Accessories of CCEC QSK78-C3500 Industrial Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Shut-Off Valve2. Flame Trap
3. Air Filter3. Spark Arrestor Type Muffler & Bellows
4. Air Intake Pre-Filter4. Dpf System
5. Air Filter Alarm System5. N/A
Fuel System1. Coarse FilterLubricating System1. Oil Pre-Heater.
2. Fuel Pre-Heater2. N/A
Starting System1. Manual Magnetic Dc ContactorCooling System1. Silent Type Radiator
2. Dual Ears Flywheel Housing2. Plateau Radiator
3. Spring Starter Motor3. Salt-Spray Resistant Radiator
4. Air Starter Motor4. Coolant Pre-Heater
5. Hydraulic Starter Motor5. Jacket Water Heater
6. Manual Magnetic Dc Contactor6. N/A
Engine Auiliary Accessories1. Hydraulic Oil PumpControl System1. Can Add Engine Monitoring System, Contro System With Wiring Harness.
2. Air Conditioner Compressor2. Can Add Self-Protection System that Integrated with Alarm System.
Power Output System1. ClutchEngine Mounting System1. Shock Absorber Pad

Committed to Providing Stable and Reliable Premiem Power System for Global Construction Machinery Manufacturer Partners, ConeMac is A Sub-Brand of the EMAC Group that Focuses on Construction Equipment Application.
ConeMac’s Ranges of Products Mainly Inclduing Marine Construction Engines Power Pack, Construction Equipment Gearbox, Gear Reducer, Explosion-Proof Engines, Generator Set and Water Pump Set for Mining, Oil and Gas Field.
For More Information of Our Industrial Power System Products, You Are Welcome to Visit ConeMac Homepage:


Modifiable Components of CCEC QSK78-C3500 Industrial Engine

Air Intake System1. Installation Position of Air FilterCharging System1. 12 V Charging Alternator for 12 v Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Explosion-Proof Charging Alternator
3. N/A3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Exhuast System1. Water-Cooled Exhuast ManifoldLubricating System1. Oil Pan Position
2. Water-Cooled Turbocharger2. Number of Dipstick
3. Can Modify Installation Position and Direction of Turbocharger3. Position of Dipstick Can Choose from 6 Positions
4. N/A4. Can Modify Oil Filter to be Remote Installation
Engine Shut-Down System1. 12 V Solenoid for 12 V Electric SystemStarting System1. Upgrading to Specified Brand and Speicifications of Starter Motor
2. Explosion-Proof Solenoid2. 12 V Starter Motor for 12 V Electric System
Fuel System1. Upgrade to Fuel Fitler that Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. All of auxiliary System can Choose Specified Brands and Specifications
2. N/A2. Additional Auxiliary Systems Can be Added for Special Applications
Cooling System1. Can Modify Engine fan Into Blower Fan or Suction FanPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Can Modify Central Position of Engine Cooling Fan2. Dual-Ear Flywheel Housing (For Twin-Starter System)
3. Can Choose Type of Engine Fan From Mechanical Type or Electric Type3. Some of Models can Modify Flywheel Housing Into PTO Integrated Type
4. N/A4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System1. Can Modify Engine Mouting Bracket

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate


Sales Team

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