DCEC X12-C350-II Industrial Engine
DCEC X12-C350-II Industrial engine is a 6-cylinders in line, 11.8 liter four-strokes engine. Equipped with Electrically Control High-pressure Common Rail, engine comes with turbocharger.
The prime power at 1800 RPM of DCEC X12-C350-II Industrial engine is 350 HP.
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 DCEC X12-C350-II Industrial Engine
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The five key systems of the engine are developed and optimized and integrated by Cummins to ensure the reliability of the engine.
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High pressure common rail fuel system (HPCR), fuel injection pressure up to 1600bar, rapid throttle response at different speeds, more efficient power output, better fuel economy, and lower noise.
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Mature intelligent electronic control technology improves the overall performance of the engine, and the engine specifications can be tailored according to the application needs, and the self-diagnosis and self-protection capabilities are stronger.
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The filter system is redesigned for oil products, and the fuel is adaptable and suitable for applications in various fields.
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Strong environmental adaptability, good cold start performance.
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The overall modular design, the total number of parts is small, the failure rate is low, the structure is compact, and the maintenance is easy.
Technical Specifications
| Engine Model: | X12-C350-II |
| Displacement: | 11.8 L |
| Engine Type: | 6 Cylinders |
| Maximum low idle speed: | 1200 RPM |
| Rated Power / Speed: | 261 kW @ 1800 RPM |
| Peak Torque: | 1729 N-m (1275 lb-ft) @ 1400 RPM |
| Fuel System: | XPI |
| Aspiration Method: | Turbocharged CAC |
| Emission Standard: | EU Stage V |
| Compression Ratio: | 17 : 1 |
| Packing Size(L*W*H): | N / A |
| Wet Weight: | N / A |
| Lead Time: | 15-30 Working Days |
| Payment Terms: | T/T ,L/C |
Engine Model |
Rated Power |
Peak Torque |
Fuel System |
Aspiration |
| X12-C350-I | 350 HP @ 2100 RPM | 1830 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C350-II | 350 HP @ 1800 RPM | 1729 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12- C375-I | 375 HP @ 2100 RPM | 1966 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12- C375-II | 375 HP @ 1900 RPM | 1830 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12- C375-III | 375 HP @ 1800 RPM | 1830 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C400-I | 400 HP @ 2100 RPM | 2169 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C400-II | 400 HP @ 2100 RPM | 2034 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C400-III | 400 HP @ 1800 RPM | 2034 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C400-IV | 400 HP @ 2100 RPM | 1898 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C430-I | 430 HP @ 2100 RPM | 2300 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C430-II | 430 HP @ 1800 RPM | 2034 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C435 | 435 HP @ 1900 RPM | 2169 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C450 | 450 HP @ 1800 RPM | 2169 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C460 | 460 HP @ 2100 RPM | 2300 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C475 | 475 HP @ 1800 RPM | 2169 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C500 | 500 HP @ 1800 RPM | 2169 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| X12-C513 | 513 HP @ 1900 RPM | 2300 N.m @ 1400 RPM | XPI | Turbocharged CAC |
| ——END—— | ||||
General Infomation of DCEC X12-C350-I Industrial Engine |
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| Engine Model | X12-C350-I | CPL Code | 4459 | |
| Curve & Datasheet | FR21072 | Rated Power | 261 kW (350 HP) @ 2100 RPM | |
| Compression Ratio | 17 :1 | Torque Peak | 1830 N-m (1350 lb-ft) @ 1400 RPM | |
| Noise Emissions Top Side | 95.6 dB(A) | Revision | 10-Jul-23 | |
| Noise Emissions Right Side | 101.4 dB(A) | Displacement | 11.8 L (720 in3) | |
| Noise Emissions Left Side | 101.0 dB(A) | Fuel System | XPI | |
| Noise Emissions Front Side | 100.1 dB(A) | Maximum low idle speed | 1200 RPM | |
| Exhaust noise emissions | N/A | Minimum low idle speed | 700 RPM | |
| Aspiration | Turbocharged CAC | Minimum engine speed for full load sustained operation | 1400 RPM | |
| Configuration | D0S3002CX03 | Emission Certification | CARB Tier 4(f), EU Stage V, US EPA Tier 4(f) | |
| ——END—— | ||||
Engine Performance Data DCEC X12-C350-II Industrial Engine |
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| Governed Power | Maximum Power | Peak Torque | ||||
| Engine Speed | 1800 RPM | 1700 RPM | 1400 RPM | |||
| Output Power | 350 HP | 261 kW | 350 HP | 261 kW | 340 HP | 253 kW |
| Torque | 1021 lb-ft | 1385 N-m | 1081 lb-ft | 1465 N-m | 1275 lb-ft | 1729 N-m |
| Motoring Power | 63 HP | 47 kW | 58 HP | 43 kW | 39 HP | 29 kW |
| Intake Manifold Pressure | 51 in-Hg | 173 kPa | 52 in-Hg | 175 kPa | 53 in-Hg | 179 kPa |
| Turbo Comp. Outlet Pressure | 53.1 in-Hg | 179.2 kPa | 51.7 in-Hg | 174.7 kPa | 54.2 in-Hg | 183.2 kPa |
| Turbo Comp. Outlet Temperature | 312 deg F | 156 deg C | 311 deg F | 155 deg C | 314 deg F | 157 deg C |
| Inlet Air Flow | 874 ft3/min | 413 L/s | 838 ft3/min | 395 L/s | 718 ft3/min | 339 L/s |
| Charge (Fresh Air) Flow | 63.0 lb/min | 28.6 kg/min | 60.4 lb/min | 27.4 kg/min | 51.9 lb/min | 23.5 kg/min |
| Exhaust Gas Flow | 1568 ft3/min | 740 L/s | 1508 ft3/min | 712 L/s | 1409 ft3/min | 665 L/s |
| Exhaust Gas Temperature | 757 deg F | 403 deg C | 749 deg F | 398 deg C | 809 deg F | 432 deg C |
| Heat Rejection to Coolant | 4776 BTU / min | 84.0 kW | 4536 BTU / min | 79.8 kW | 4151 BTU / min | 73.0 kW |
| Heat Rejection to Ambient | 1916 BTU / min | 33.7 kW | 1916 BTU / min | 33.7 kW | 1916 BTU / min | 33.7 kW |
| Heat Rejection to Exhaust | 11408 BTU / min | 200.6 kW | 10811 BTU / min | 190.1 kW | 10208 BTU / min | 179.5 kW |
| ——END—— | ||||||
Torque Output |
Power Output |
Fuel Consumption |
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| RPM | lb-ft | N-m | RPM | HP | kW | RPM | lb/HP-hr | g/kW-hr |
| 700 | 800 | 1085 | 700 | 107 | 80 | 800 | 0.328 | 199 |
| 800 | 900 | 1220 | 800 | 137 | 102 | 900 | 0.325 | 197 |
| 900 | 1050 | 1424 | 900 | 180 | 134 | 1000 | 0.325 | 198 |
| 1000 | 1205 | 1634 | 1000 | 229 | 171 | 1100 | 0.314 | 191 |
| 1100 | 1222 | 1657 | 1100 | 256 | 191 | 1200 | 0.314 | 191 |
| 1200 | 1240 | 1681 | 1200 | 283 | 211 | 1300 | 0.318 | 194 |
| 1300 | 1258 | 1705 | 1300 | 311 | 232 | 1400 | 0.319 | 194 |
| 1400 | 1275 | 1729 | 1400 | 340 | 253 | 1500 | 0.32 | 195 |
| 1500 | 1206 | 1635 | 1500 | 344 | 257 | 1600 | 0.322 | 196 |
| 1600 | 1145 | 1552 | 1600 | 349 | 260 | 1700 | 0.327 | 199 |
| 1700 | 1081 | 1465 | 1700 | 350 | 261 | 1800 | 0.336 | 204 |
| 1800 | 1021 | 1385 | 1800 | 350 | 261 | |||
| —END— | ||||||||
System Technical Data of DCEC X12-C350-II Industrial Engine |
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| 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 |
20.0 delta deg F | 11.1 delta deg C |
| Cooling System | Maximum charge air cooler outlet to ambient at 25 deg C (77 deg F) (CAC dT) | 43.0 delta deg F | 23.9 delta deg C |
| Maximum CAC outlet temperature at less than or equal to 25 deg C (77 deg F) ambient: |
120 deg F | 49 deg C | |
| Maximum allowable pressure drop across charge air cooler and OEM CAC piping (IMPD): |
4.0 in-Hg | 13.5 kPa | |
| Maximum coolant temperature for engine protection controls | 218 deg F | 103 deg C | |
| Maximum coolant operating temperature at engine outlet (max. top tank temp) : | 215 deg F | 102 deg C | |
| Exhaust Syetem | Maximum exhaust backpressure imposed by exhaust system (if DPF is present, the limit is at soot level after regeneration or cleaning: |
8.7 in-Hg | 29.4 kPa |
| Recommended exhaust pipe size (inner diameter): | 5.0 in | 127 mm | |
| Lubrication System | Nominal operating oil pressure at minimum low idle | 7.3 psi | 50 kPa |
| Nominal operating oil pressure at maximum rated speed | 42.0 psi | 290 kPa | |
| Minimum engine oil pressure at minimum low idle (for engine protection devices) | 5.0 psi | 34 kPa | |
| Fuel System | Fuel cooling requirements (with diesel fuel) | ||
| The maximum heat rejection to return fuel at maximum coolant and inlet fuel temperature is 2.60 kW (148 BTU / min) at a fuel return flow rate of 77 kg/hr (170 lb/hr) with a fuel return temperature of 128 deg C (263 deg F) prior to cooler. |
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| Maximum supply fuel flow: | 342 lb/hr | 155 kg/hr | |
| Maximum return fuel flow: | 170 lb/hr | 77 kg/hr | |
| Engine fuel compatibility (consult Service Bulletin #5411406 for appropriate use of other fuels) |
ULSD | ||
| Maximum fuel inlet pressure | 3 psi | 21 kPa | |
| Performance Data | Maximum low idle speed: | 1200 RPM | |
| Minimum low idle speed: | 700 RPM | ||
| Minimum engine speed for full load sustained operation: | 1400 RPM | ||
| Maximum overspeed capability: | 2625 RPM | ||
| Maximum continuous power: | 280 kW(375 HP) | ||
| Maximum continuous speed: | 1900 RPM | ||
| —END— | |||
Scopes of Supply of DCEC X12-C350-II Industrial Drive Engine |
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| Cooling System | 1. Water Pump | Exhuast System | 1. Exhuast Manifold | |
| 2. Engine Fan | 2. Turbocharger | |||
| 3. Standard Radiator | 3. Exhuast Elbow | |||
| Starting System | 1. Starter Motor | Fuel System | 1. Common rail Fuel system | |
| 2. Starter Rely | 2. Fuel Filter | |||
| Lubricating System | 1. Oil Pump | Power Output System | 1. Flywheel | |
| 2. Oil Filter | 2. Standard Flywheel Housing | |||
| Air Intake System | 1. Air intake Manifold | Charging System | 1. Charging Alternator | |
| Engine Mounting System | 1. Engine Mouting Bracket | Engine Auiliary Accessories | 1. Air compressor | |
| Control System | 1. ECU & Sensors | |||
| ——END—— | ||||
Optional Accessories of DCEC X12-C350-II Industrial Drive Engine |
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| Air Intake System | 1. Air Intake Pre-heater | Exhuast System | 1. Muffler & Bellows | |
| 2. Air intake Shut-off valve | 2. Flame trap | |||
| 3. Air Filter | 3. Spark Arrestor type Muffler & Bellows | |||
| 4. Air intake Pre-filter | 4. DPF System | |||
| 5. Air Filter alarm System | 5. N / A | |||
| Engine Auiliary Accessories | 1. Hydraulic oil Pump | Control System | 1. Can add engine monitoring system, contro system with wiring harness | |
| 2. Air Conditioner Compressor | 2. Can add self-protection system that integrated with alarm system | |||
| Starting System | 1. Manual Magnetic DC Contactor | Cooling System | 1. Silent Type Radiator | |
| 2. Dual Ears Flywheel Housing | 2. Plateau Radiator | |||
| 3. Spring Starter Motor | 3. Salt-Spray Resistant Radiator | |||
| 4. Air Starter Motor | 4. Coolant Pre-heater | |||
| 5. Hydraulic Starter Motor | 5. Jacket Water heater | |||
| 6. Remote starting Function | 6. N/A | |||
| 7. Lock Protection Function of Starter Motor | 7. N/A | |||
| 8. Manual Magnetic DC Contactor | ||||
| Fuel System | 1. Coarse Filter | Lubricating System | 1. Oil pre-heater | |
| Power Output System | 1. Clutch | Engine Mounting System | 1. Shock Absorber pad | |
——END—— |
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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: Conemac.cn
Modifiable components of DCEC X12-C350-II Industrial Drive Engine |
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| Exhuast System | 1. Can Modify Installation Position and Direction of Turbocharger | Charging System | 1. 12V Charging Alternator for 12V Electric System | |
| 2. N / A | 2. Explosion-proof Charging Alternator | |||
| 3. Water-cooled Turbocharger | 3. Upgrading to Specified Brand and Speicifications of Charging Alternator | |||
| Power Output System | 1. Can Modify Size of Flywheel Housing and Flywheel. | Lubricating System | 1. Oil Pan Position | |
| 2. Dual-ear Flywheel Housing (For Twin-Starter System) | 2. Number of Dipstick | |||
| 3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type. | 3. Position of Dipstick Can Choose from 6 Positions | |||
| 4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output | 4. Can Modify Oil Filter to Be Remote Installation | |||
| Cooling System | 1. Can Modify Engine Fan Into Blower Fan Or Suction Fan | Engine Auiliary Accessories | 1. All of Auxiliary System Can Choose Specified Brands and Specifications | |
| 2. Can Modify Central Position of Engine Cooling Fan | 2. Additional Auxiliary Systems Can Be Added for Special Applications | |||
| 3. Can Choose Type of Engine Fan from Mechanical Type or Electric Type | 3. N / A | |||
| Fuel System | 1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-hearter | Engine Mounting System | 1. Can Modify Engine Mouting Bracket | |
| Control System | 1. ECU Can Setting to Different Control Mode, Including CAN Communication, Analogue Control, ISC1,ISC2,ISC3 Speed Conrol Mode Etc | |||
——END—— |
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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.
Engine Sale Manual
Installation Drawing
Installation Manual
Operation Manual
Parts Catalogue
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