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L325-20 Automotive Engine

DCEC L325-20 automotive engine is a 6-cylinders in line, 8.9 liter four-strokes engine with 114mm bore and 145mm stroke, equipped with Bosch P7100 pump and RQV-K governor. DCEC L325-20 automotive engine comes with turbocharger and Air-Air intercooler, with a EURO II post-processor. The prime power at 2200RPM of DCEC L325-20 automotive engine is 239 kW.

As part of EMAC, DuraMac provides complete powertrain that integrated with DCEC engine, Fast-Eaton clutch, FAST-CAT transmission, -DANA axle and Komman air suspension, while the electrification of automobile is the certain future, Duramac also get involved with EV powertrain system. 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 L Automotive Engine

1. The cylinder bore adopts a platform mesh honing design, the perfect geometric structure effectively prevents oil leakage, and adopts advanced technologies such as new piston ring components and gasket crimping molding to reduce oil loss.
2. The cylinder block and cylinder head adopt integrated design, which eliminates the occurrence of engine water leakage and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.
3. 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.

Introduction of L325-20

Engine Model:L325-20
Engine Type:6 Cylinders, in Line
Displacement:8.9 L
Advertised Power:325 HP @ 2200 rpm
Aspiration Method:T-charged & I-cooler
Fuel Consumption:N/A
Packing Size(L*W*H):N/A
Dry Weight:650Kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Engine Model

Advertised Power

Peak Torque


 Fuel System

L300-20[email protected] rpm[email protected]780N.mBoschP7100 Pump/RQV-K
L325-20[email protected] rpm[email protected]780N.mBoschP7100 Pump/RQV-K
L340-20[email protected] rpm[email protected]780N.mBoschP7100 Pump/RQV-K
L340-30[email protected] rpm[email protected]1010N.mWeiFu PH Pump
L360-20[email protected] rpm[email protected]780N.mBosch7100 Pump/RQV-K
L360-30[email protected] rpm[email protected]780N.mWeiFu PH pump/RQV-K
L375-30[email protected] rpm[email protected]1210N.mWeiFu PH pump/RQV-K




GeneralInfomation of DCEC L325-20 Automotive Engine

Engine ModelL325-20Advertised Power325 HP @ 2200 rpm
Peak Torque1230 N.m @ 1400 rpmCurve&DatasheetFR92014
Compression Ratio16.6:1No. Of Cylinders6
AspirationTurbocharged & Inter-cooledDisplacement8.9L
Bore*Storke114*145mmCPL Code Revision1480
Dry Weight650kgWet Weight680kg

Installation Data of DCEC L325-20 Automotive Engine

Center Of Gravity. Distance From Front Face Of Block427mm
Center Of Gravity. Distance Above Crank Centerline(Above Crankshaft)163mm
Maximum Bending Moment At Rear Face Of Block1356N.m
Maximum Crankshaft Thrust Bearing load limit- Intermittent load5338N
Maximum Crankshaft Thrust Bearing load limit-Continuous load2670N
Instantaneous Inertia At Rotating: (Without Flywheel)N/A
Emissions CertificationGB17691/GB14761
Idle Speed700±100rpm
Maximum Non-Load Speed2500rpm
Over Speed Performance (Within 15 Seconds)3500rpm
The Clutch Torque @ 800Rpm780N.m
Maximum Altitude At Which Continuous Operation Is Allowed2000m
Supercharger Outlet Exhaust Pressure limit Value450kPa
Maximum Power Of Exhaust Brake114kW

Fuel System of DCEC  L325-20 Automotive Engine

Fuel SystemBoschP7100 Pump/RQV-K
Maximum Fuel Return Resistance520mmHg
Maximum Inlet Resistance of oil Pump With Clean Filter150mmHg


Maximum Rating Performance Data of DCEC L325-20 Automotive Engine

Engine Speed2200rpm1400rpm
Oil Pressure426kPa327kPa
Air Flow21.2m³/min11.2m³/min
Air Pressurized FlowN/AN/A
Air Pressurized Pressure170kPa132kPa
Exhaust Flow56m³/min35m³/min
Exhaust Temperature510°C505°C
Fuel Consumption64l/hr42.5l/hr
Coolant Flow280l/m175l/m
Heat Energy Loss Coolant108KW66.8KW
Heat Energy Loss Air65KW29KW
Mechanical Loss36.5KW17KW

The picture of Performance Curve-DCEC Cummins L325-20 Automotive Enginee

System Technical Data of DCEC L325-20 Automotive Engine

Air Intake SystemMaximum Temperature Rise Between Ambient Air And Engine Air Inlet15℃
Max. Intake Restriction With Dry Type Air Cleaner,With Clean Filter-Medium Duty2.9 (300) kPa (mmH2O)
Max. Intake Restriction With Dry Type Air Cleaner,With Clean Filter-Heavy Duty3.7 (380)kPa (mmH2O)
Max. Intake Restriction With Dirty Filter6.2 (635)kPa (mmH2O)
Turbocharged&IntercooledMaximum Intake Manifold Temperature-Second Level55 ℃
Maximum Intake Manifold Temperature-Three-Level50℃
 Intercooler Cooling Temperature-Second Level25℃
 Intercooler Cooling Temperature-Three-Level20℃
Maximum Allowable Pressure Difference Before And After Intercooling-Three-Level16.7 (125)kPa(mmHg)
Minimum Inlet Pipe Diameter Allowed-Three-Level100mm
Exhaust SystemMax. Back Pressure Imposed By Complete Exhaust System10.0 (75)kPa(mmHg)
Exhaust Pipe Size Normally Accepable75mm
Maximum Static Bend Allowed For Turbocharger Exhaust FlangeN/A
Lubrication SystemLow Oil Level Inclination Angle-Front Up45º
Low Oil Level Inclination Angle-Back Up45º
Low Oil Level Inclination Angle-Fuel Pump Side Up45º
Low Oil Level Inclination Angle-Exhaust Side Up45º
Oil Sump Capacity-Upper Limit23L
Oil Sump Capacity-Lower Limit19L
Capacity Of The Whole System27.6L
Cooling SystemCoolant Capacity – Engine Only11.1L
Standard Thermostat (Modulating) Range83-93℃
Minimum Fill Rate ( Without Low Level Alarm)19L/m
Minimum Coolant Expansion Space – % Of System Capacity6%
Water Tank Capacity Without Water Expansion6L
Maximum Coolant Pressure (Without Pressure Cap, Thermostat Closed)290kPa
Maximum Degassing Time25mins
Maximum Coolant Flow To Accessories56l/m
Maximum Coolant Temperature Engine Out100℃
Minimum Allows Pressure Of Pressure Cap50kPa
Minimum Recommended Coolant Temperature70℃
Common Operating Temperature Range Of Fans With Fan Clutch75-80℃
Maximum Coolent Temperature For Engine Protection Control104℃
The Limit Environmental Temperature At Rated Speed45 ℃;42℃
The Limit Environmental Temperature At Peak Torque40 ℃;37℃
24V Electrical SystemMaximum Allowable Resistance Of Cranking Circuit0.002Ω
The Cold Start Current When Engine And The Clutch Separate510CCA
Cold Starting SystemMin. Unaided Cold Start Temperature-10℃ @120rpm
Min. Aided Cold Start Temperature-25℃ @110rpm


Scopes of Supply of DCEC L325-20 Automotive Engine

Air Intake System1.  Air intake manifoldStarting System1.  Starter motor
2.  Water-air Intercooler2.  Starter rely
Exhuast System1.  Exhuast manifoldFuel System1. Fuel transfer pump
2.  Turbocharger2. High-pressure fuel pump
3.  Exhuast elbow3. Fuel Filter
Charging System1.  Charging alternatorControl System1.  ECU & sensors
Cooling System1.  Water pumpLubricating System1.  Oil pump
2.  Engine Fan2.  Oil filter
3.  Standard radiator3. N/A
Power Output System1. FlywheelEngine Auiliary Accessories1. Air compressor
2. Standard flywheel housing2. Power steering pump
Engine Mounting System1.  Engine Mouting BracketEngine Shut-Down System1. Engine fuel shut-off solenoid


Optional Accessories of DCEC L325-20 Automotive Engine

Air Intake System1.  Air Intake pre-heaterStarting System1. Manual Magnetic DC Contactor
2.  Air intake shut-off valve2. Dual ears flywheel housing
3.  Air filter3. Spring Starter Motor
4.  Air intake pre-filter4. Air Starter Motor
5.  Air filter alarm system5. Hydraulic Starter Motor
Exhuast System1. Muffler & bellowsCooling System1. Silent Type Radiator
2. Flame trap2.Plateau Radiator
3. Spark arrestor type Muffler & bellows3.Salt-Spray Resistant Radiator
4. DPF system4. Coolant pre-heater
Lubricating System1. Oil pre-heater.Power Output System1. Clutch
Fuel System1. Coarse FilterEngine Auiliary Accessories1. Hydraulic oil pump
2. Fuel pre-heater2. Air conditioner compressor
Engine Mounting System1. Shock absorber padControl System1. Can add mechanical accelerator pedal


Modifiable components of DCEC L325-20 Automotive Engine

Air Intake System1. Installation position of air filterStarting System1. 12V starter motor for 12v electric system
2. Upgrade to  heavy-duty type air fitler2. Upgrading to specified brand and speicifications of  starter motor
Exhuast System1. Can modify installation position and direction of turbochargerCharging System1. 12V charging alternator for 12v electric system
2. Water-cooled exhuast manifold2. Explosion-proof charging alternator
3. Water-cooled turbocharger3. Upgrading to specified brand and speicifications of charging alternator
Fuel System1. Upgrade to fuel fitler that integrated with fuel transfer pump and fuel pre-hearterEngine Mounting System1. Can modify engine mouting bracket.
Engine Shut-Down System1. 12V solenoid for 12v electric systemCooling System1.  Can modify engine fan into blower fan or suction fan
2. Explosion-proof solenoid2. Can modify central position of engine cooling fan
3. N/A3. Can choose type of engine fan from mechanical type or electric type
Lubricating System1. Oil Pan positionPower Output System1. Can modify size of flywheel housing and flywheel.
2. Number of dipstick2. Dual-ear flywheel housing (For twin-starter system)
3.  Position of dipstick can choose from 6 positions3. Some of models can modify flywheel housing into PTO integrated type.
4. Can modify oil filter to be remote installation4. Engine have connecting port of PTOs, that able to provide power output.
Engine Auiliary Accessories1. All of auxiliary system can choose specified brands and specifications.
2. Additional auxiliary systems can be added for special applications.


The picture of Test PDF-download showing the accessories and scopes of supply.
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.

Engine Parts Catalogue

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

Test Report and Certifcate

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Sales Team

Generator Engine - Mr. Haden Wu

Marine Engine - Mrs. Hailey Tang

Automotive Engine - Mr. Vin Hu

Industrial Engine - Miss. Bella Huang

Pump Engine - Miss. Zora Zhou

Sales Director - Mr. Jasper Lee      

Service Team

Technical Service - Mr. Vin Hu

Customer Service - Mrs. Wendy Fu

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