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Cummins KTA19-G4 448kW Generator Drive Engine
Cummins KTA19-G4 448kW Generator Drive Engine
Cummins KTA19-G4 448kW Generator Drive Engine
Cummins KTA19-G4 448kW Generator Drive Engine

Cummins KTA19-G4 448kW Generator Drive Engine

Cummins KTA19-G4 18.9L generator-drive diesel engine for 50Hz and 60Hz generator sets used in industrial plants, data centers, mining projects, utilities and OEM genset production. At 1,500 rpm, it delivers 448 kW gross prime and 504 kW gross standby mechanical power, with typical 50Hz generator-set positioning around 500 kVA prime and 550 kVA standby. At 1,800 rpm, it delivers 507 kW gross prime and 563 kW gross standby power for 60Hz applications. The engine uses a Cummins PT direct-injection fuel system, turbocharging, aftercooling and replaceable wet cylinder liners. Genset matching and replacement compatibility should be verified using the ESN, CPL, configuration number, governor type, cooling package and alternator interface.
Engine Model:
KTA19-G4
50Hz Prime Power:
448 kW @ 1,500 rpm
50Hz Standby Power:
504 kW @ 1,500 rpm
60Hz Prime Power:
507 kW @ 1,800 rpm
Displacement:
18.9 L
Fuel System:
Cummins PT Direct Injection

The Cummins KTA19-G4 is an 18.9L inline-six diesel engine developed for generator-drive applications at both 1,500 rpm and 1,800 rpm.

At 1,500 rpm, the engine provides 448 kW of gross prime mechanical power, 504 kW of gross standby mechanical power and 355 kW of gross continuous mechanical power. In the referenced 50 Hz Coolpac configuration, Cummins lists typical generator-set outputs of approximately 500 kVA prime, 550 kVA standby and 396 kVA continuous.

At 1,800 rpm, the engine provides 507 kW of gross prime mechanical power, 563 kW of gross standby mechanical power and 429 kW of gross continuous mechanical power. The referenced 60 Hz configuration is commonly evaluated around 455 kWe prime, 500 kWe standby and 379 kWe continuous.

The final electrical rating depends on the exact engine build, main alternator efficiency, cooling-fan absorption, power factor, ambient temperature, altitude, enclosure airflow and auxiliary loads. Engine mechanical output should not be presented as the guaranteed electrical output of the complete generator set.

  • 18.9L inline-six, four-stroke diesel engine
  • 50 Hz gross prime power: 448 kW at 1,500 rpm
  • 50 Hz gross standby power: 504 kW at 1,500 rpm
  • 50 Hz gross continuous power: 355 kW at 1,500 rpm
  • Typical 50 Hz genset positioning: approximately 500 kVA prime and 550 kVA standby
  • 60 Hz gross prime power: 507 kW at 1,800 rpm
  • 60 Hz gross standby power: 563 kW at 1,800 rpm
  • Cummins PT direct-injection fuel system
  • Turbocharged and aftercooled
  • Replaceable wet cylinder liners
  • 24V starting-system reference
  • 50 Hz and 60 Hz configurations available subject to build verification

Planning a new generator set or replacing an existing K19 engine? Send the engine nameplate, ESN, CPL, configuration number, required output, frequency, alternator model and installation photos for compatibility checking.

KTA19-G4 Engine Power and Generator-Set Output

The KTA19-G4 power figures must be separated into gross engine output, net engine output and typical generator-set output.

Gross engine output is measured before cooling-fan and other package losses. Net engine output deducts defined engine-side parasitic loads. Typical generator-set output additionally considers alternator conversion efficiency and the applicable power factor.

Operating Configuration Gross Engine Output Net Engine Output Typical Generator-Set Output
50 Hz standby at 1,500 rpm 504 kWm 481 kWm Approximately 440 kWe / 550 kVA
50 Hz prime at 1,500 rpm 448 kWm 430 kWm Approximately 400 kWe / 500 kVA
50 Hz continuous at 1,500 rpm 355 kWm 337 kWm Approximately 317 kWe / 396 kVA
60 Hz standby at 1,800 rpm 563 kWm 534 kWm Approximately 500 kWe / 625 kVA
60 Hz prime at 1,800 rpm 507 kWm 484 kWm Approximately 455 kWe / 569 kVA
60 Hz continuous at 1,800 rpm 429 kWm 406 kWm Approximately 379 kWe / 474 kVA

These figures are reference outputs from a defined Cummins package. The final OEM generator-set rating must be confirmed with the selected alternator, radiator, fan, controller and site derating.

Why 448 kW Does Not Mean 560 kVA of Confirmed Output

Dividing 448 kW directly by a 0.8 power factor produces 560 kVA. However, this calculation ignores the cooling-fan load, engine-side parasitic losses and alternator conversion losses.

Power Stage What It Represents KTA19-G4 50 Hz Prime Reference
Gross Mechanical Power Engine output before defined package parasitic loads 448 kWm
Net Mechanical Power Mechanical output after defined engine-side losses Approximately 430 kWm
Electrical Real Power Usable electrical kW after alternator conversion Approximately 400 kWe in the referenced Coolpac package
Electrical Apparent Power Electrical kVA calculated at the applicable power factor Approximately 500 kVA at 0.8 power factor

The KTA19-G4 is therefore normally positioned as a 500 kVA prime and 550 kVA standby engine in the referenced 50 Hz Coolpac configuration, rather than as a confirmed 560 kVA prime engine.

Why Published KTA19-G4 Ratings May Differ

Buyers may find more than one published generator-set output for the KTA19-G4. A model-specific Coolpac specification and a general G-Drive rating card may use different assumptions for cooling-fan power, parasitic loads and alternator performance.

Published Reference 50 Hz Prime Output 50 Hz Standby Output How to Use It
Model-specific Coolpac reference Approximately 400 kWe / 500 kVA Approximately 440 kWe / 550 kVA Relevant when the supplied cooling package and fan losses correspond to the referenced Coolpac design.
General G-Drive rating-card reference Approximately 402 kWe / 503 kVA Approximately 450 kWe / 562 kVA General engine-selection reference that may use different assumptions regarding parasitic loads and package design.

When preparing a quotation or genset datasheet, identify the exact bulletin revision, engine configuration, radiator package, fan power and alternator model instead of combining figures from different documents.

Prime, Standby and Continuous Ratings

The KTA19-G4 has separate standby, prime and continuous ratings. These ratings describe different operating duties and should not be used interchangeably.

Rating General Operating Duty KTA19-G4 Selection Note
Emergency Standby Power Emergency operation during interruption of a reliable utility source The 504 kWm rating at 50 Hz and 563 kWm rating at 60 Hz are not intended as normal long-duration operating points.
Prime Power Extended operation with a varying electrical load under the applicable rating definition Use 448 kWm at 50 Hz or 507 kWm at 60 Hz only within the approved prime-duty limits.
Continuous Power Continuous operation with a relatively constant electrical load The referenced gross continuous ratings are 355 kWm at 50 Hz and 429 kWm at 60 Hz.

For base-load power stations, isolated grids, mining camps and long-hour industrial generation, use the continuous rating and approved performance curve rather than the standby rating.

50 Hz and 60 Hz Are Separate Engine Configurations

A four-pole main alternator normally operates at 1,500 rpm for 50 Hz and 1,800 rpm for 60 Hz. The KTA19-G4 has published ratings at both speeds, but the engine package should not be converted by changing speed alone.

Selection Item 50 Hz Configuration 60 Hz Configuration
Rated Engine Speed 1,500 rpm 1,800 rpm
Gross Prime Power 448 kWm 507 kWm
Gross Standby Power 504 kWm 563 kWm
Cooling-Fan Power Reference Approximately 15 kWm Approximately 24 kWm
Cooling Airflow Reference Approximately 9.91 m³/s Approximately 12.5 m³/s
Governor and Control Must match the approved 1,500 rpm build Must match the approved 1,800 rpm build

The control system, fuel calibration, radiator, fan, main alternator, coupling, protection settings and enclosure ventilation must be reviewed when changing between 50 Hz and 60 Hz.

Cummins PT Fuel System and Control Configuration

The KTA19-G4 uses the Cummins PT direct-injection fuel system. Fuel delivery is controlled through the relationship between fuel pressure and injector metering time.

The exact governor and engine-control arrangement may vary by production build and package. Some KTA19-G4 references describe dual-speed electronic fuel control, while configuration-specific units may use a different governor arrangement.

System Item Function Purchasing Requirement
Cummins PT Fuel System Meters fuel using pump pressure and injector timing Confirm the PT pump, injector and calibration references by ESN and CPL.
Main Governor or Engine Control Controls engine speed as generator load changes Confirm whether the quoted build uses mechanical, electronic or dual-speed control.
Independent Overspeed Protection Provides a separate protection function from the main governor Verify the actual overspeed device and shutdown interface on the supplied engine.
Generator AVR Controls generator voltage The PT system and engine governor do not independently regulate electrical voltage.
Generator Controller Manages starting, stopping, alarms and protection Confirm compatibility with the speed-control and shutdown arrangement.

Frequency performance depends on the complete engine, governor, generator inertia, controller and load-step design. Voltage performance depends primarily on the main alternator, excitation system and AVR.

KTA19-G4 Fuel Consumption

The original value of 107 L/kW·h is an incorrect unit. The referenced Cummins specification lists 107 litres per hour at 100% prime load for the 1,500 rpm configuration.

50 Hz Fuel-Consumption Reference

Operating Point Gross Engine Power Fuel Consumption
100% standby 504 kWm Approximately 121 L/h
100% prime 448 kWm Approximately 107 L/h
75% prime 336 kWm Approximately 82 L/h
50% prime 224 kWm Approximately 57 L/h
25% prime 112 kWm Approximately 30 L/h
100% continuous 355 kWm Approximately 86 L/h

60 Hz Fuel-Consumption Reference

Operating Point Gross Engine Power Fuel Consumption
100% standby 563 kWm Approximately 136 L/h
100% prime 507 kWm Approximately 122 L/h
75% prime 380 kWm Approximately 94 L/h
50% prime 254 kWm Approximately 65 L/h
25% prime 127 kWm Approximately 36 L/h
100% continuous 429 kWm Approximately 104 L/h

Actual site consumption depends on load factor, fuel density, idle time, altitude, ambient temperature, fan demand, alternator efficiency and engine condition.

KTA19-G4 Technical Specifications

Core Engine Data

Parameter Reference Specification
Engine Model KTA19-G4
Engine Type Four-stroke, inline six-cylinder diesel engine
Displacement 18.9 L
Bore × Stroke 159 × 159 mm
Aspiration Turbocharged and aftercooled
Cylinder Block Cast-iron block with replaceable wet cylinder liners
Fuel System Cummins PT direct injection
Fuel Filtration Spin-on fuel filters with water-separation reference
Lubrication Filter Spin-on, full-flow oil filtration
Lubricating-Oil Capacity Approximately 50 L for the referenced configuration
Starting Voltage 24V
Battery-Charging Alternator 45A, negative-ground reference
Flywheel-Housing Reference SAE No. 0 reference; verify the actual supplied build

Cooling-Package Data

Parameter 50 Hz Reference 60 Hz Reference
Cooling-System Design Jacket-water aftercooled Coolpac reference Jacket-water aftercooled Coolpac reference
Total Cooling-System Capacity Approximately 93 L Approximately 93 L
Coolant Mixture Reference 50% ethylene glycol and 50% water 50% ethylene glycol and 50% water
Limiting Ambient Temperature Up to 50°C for the defined Coolpac test condition Up to 50°C for the defined Coolpac test condition
Fan-Power Reference Approximately 15 kWm Approximately 24 kWm
Cooling-System Airflow Approximately 9.91 m³/s Approximately 12.5 m³/s

The 50°C reference applies to the defined Coolpac configuration and test restriction. It should not be applied automatically to every third-party radiator, enclosure or locally assembled generator set.

Configuration and Origin Identification

Identification Item Reference Required Verification
Engine Model KTA19-G4 Confirm the full model shown on the dataplate.
Supplier Configuration Reference D193091DX02 Confirm that the quoted engine and dataplate use this exact configuration.
Engine Serial Number Engine-specific Use the ESN to confirm production build, service parts and technical documentation.
CPL Engine-specific Use the CPL together with the ESN rather than as the only compatibility reference.
Plant of Manufacture The offered unit is presented as a CCEC Chongqing configuration Confirm the actual plant and manufacturer from the dataplate and traceability documents.
Emission Reference Supplier information may list Euro II or an unregulated export configuration Confirm the exact emission statement, certificate and serial-number coverage for the destination market.

Engine-Only and Coolpac Dimensions Are Different

The dimensions of a bare generator-drive engine cannot be used as the dimensions of an engine supplied with radiator, fan and cooling package.

Supply Form Reference Dimensions Reference Dry Weight Planning Use
Engine-only G-Drive reference Approximately 1859 × 868 × 1728 mm Approximately 1855 kg Initial engine-room, lifting and base-frame planning before confirming accessories.
Referenced Coolpac package Approximately 2600 × 1344 × 1773 mm Approximately 2200 kg Planning for a package including the referenced radiator and cooling arrangement.
Export-packed engine According to the final wooden case and included accessories According to the final packing list Container loading, freight quotation and lifting planning.

Do not use an unverified packing size or gross weight for freight booking. Confirm the final included accessories, wooden-case dimensions, lifting points and packing list before shipment.

Where the KTA19-G4 May Be Used

Application Why the KTA19-G4 May Be Considered Important Project Check
Data Centers and Telecom Facilities The referenced 500 kVA prime and 550 kVA standby 50 Hz range may suit medium-to-large backup packages. Verify load steps, UPS coordination, redundancy level, controller integration and required transient class.
Industrial Plants Prime and continuous ratings support different long-hour industrial power strategies. Calculate average load, largest motor starting current, operating hours and load-shedding sequence.
Mining and Remote Sites The K19 platform and PT fuel system may suit sites with established diesel-engine service capability. Review altitude, dust, fuel quality, ambient temperature, filtration and cooling margin.
Oil, Gas and Utility Projects The engine may be evaluated for pumps, auxiliary systems and emergency-generation packages. Confirm hazardous-area requirements, shutdown logic, enclosure ventilation and destination certification.
EPC and IPP Projects Published prime, standby and continuous ratings allow the engine to be evaluated for several project duties. Use the approved performance curve, alternator datasheet, fuel plan, redundancy study and lifecycle-maintenance plan.
Existing K19 Replacement The KTA19-G4 may be a replacement candidate for some K19-based generator sets. Confirm all mechanical, cooling, control and fuel-system interfaces before purchase.

Transient Performance Depends on the Complete Generator Set

The engine model alone cannot guarantee a specific one-step load-acceptance percentage, voltage dip, frequency dip or recovery time.

Complete generator-set transient performance depends on:

  • Approved engine power curve and torque response
  • Governor or engine-control configuration
  • Main alternator rotating inertia
  • Excitation system and AVR response
  • Generator controller settings
  • Applied load type and load-step size
  • Cooling-fan absorption
  • Ambient temperature and altitude
  • Motor-starting method
  • Commissioning and protection settings

ISO 8528, NFPA 110, Uptime Institute classifications and other project standards apply to the complete generator system and installation, not to the engine model by itself.

Replacing an Existing K19 Generator Engine

The KTA19-G4 shares a general engine family with other K19 generator-drive models, but this does not guarantee a direct drop-in replacement.

Matching Item Required Verification
Engine Serial Number Identify the actual original build, production revision and compatible service parts.
CPL Compare the fuel-system, injector, turbocharger and controlled-parts configuration.
Configuration Number Confirm whether D193091DX02 matches the required replacement build.
Frequency and Speed Confirm 1,500 rpm for 50 Hz or 1,800 rpm for 60 Hz.
Governor and Control Verify mechanical or electronic control, actuator, speed signal and controller interface.
Flywheel Housing Confirm the actual SAE housing, flywheel and flexible-coupling arrangement.
Engine Mounts Compare front and rear mounting locations, engine height and frame clearance.
Main Alternator Interface Verify coupling discs, shaft alignment, alternator adaptor and mounting dimensions.
Cooling Package Confirm radiator capacity, fan power, coolant connections, aftercooler circuit and enclosure airflow.
Fuel Connections Compare supply, return, filters, shutdown valve and fuel-pressure requirements.
Intake and Exhaust Check air-filter restriction, turbocharger orientation, exhaust outlet and allowable back pressure.
Starting System Confirm starter, batteries, charging alternator, cable size and 24V control circuits.
Protection and Alarms Verify speed, oil pressure, coolant temperature, overspeed and emergency-shutdown logic.

Do not order a replacement solely from the KTA19-G4 model name. Send the dataplate, ESN, CPL, generator-set model and installation photos before confirming compatibility.

CCEC, DCEC and Plant-of-Origin Verification

CCEC and DCEC are different Cummins joint-venture manufacturing operations with different product portfolios. However, plant of origin should not be used as the only technical compatibility reference.

A model prefix, supplier statement or general engine-family description does not replace the engine dataplate, ESN, CPL and build documentation.

Verification Item Why It Matters
Manufacturer Name on Dataplate Confirms the legal manufacturer shown for the specific engine.
Engine Serial Number Allows the actual build and technical documentation to be identified.
Configuration Number Provides a reference for the supplied engine arrangement.
CPL Supports controlled-parts and service-parts matching.
Production and Test Documents Provide additional traceability when included in the agreed supply scope.

KTA19-G4 Parts Support

ZEB Power can supply Cummins K19 engine parts for routine maintenance, PT fuel-system service, cooling-system repair and engine overhaul.

Parts Category Typical Components Matching Requirement
PT Fuel System Fuel pump, injectors, filters, lines and related components Match by ESN, CPL and individual part number.
Air and Turbocharging Turbocharger, intake components, air cleaner and aftercooler parts Confirm turbocharger arrangement and charge-air configuration.
Cooling System Water pump, thermostat, hoses, coolant filter and radiator components Confirm whether the engine uses the referenced Coolpac or another radiator package.
Lubrication System Oil pump, filters, oil cooler, pressure components and seals Match the oil-pan and lubrication arrangement.
Starting and Charging Starter motor, charging alternator, sensors and wiring components Confirm voltage, terminal arrangement and accessory position.
Overhaul Components Pistons, rings, cylinder liners, bearings, gaskets and valve-train parts Select top, in-frame or complete overhaul scope according to inspection results.

A model name alone may not identify every production revision. Provide the ESN, CPL, current part number, photographs and quantity for an accurate parts quotation.

Maintenance Planning

Maintenance intervals should follow the operation and maintenance documentation for the actual engine serial number and duty.

Maintenance Area Planning Requirement
Engine Oil and Filters Set the interval according to oil specification, fuel sulfur, load factor and operating environment.
Fuel Filtration Monitor contamination, water separation and fuel-supply restriction.
PT Pump and Injectors Evaluate pressure, governor response, smoke, fuel consumption and power symptoms.
Valve and Injector Adjustment Use the procedure and clearances applicable to the actual ESN and CPL.
Cooling System Inspect coolant concentration, corrosion protection, radiator, fan, hoses and aftercooler circuit.
Overhaul Planning Base the decision on oil consumption, blow-by, compression, bearing condition and operating history rather than a universal hour claim.

Available Supply Formats

Supply Format Suitable Buyer Items to Confirm
Base Generator-Drive Engine OEMs with their own radiator, controller, frame and main alternator Flywheel, housing, starter, charging alternator, controls, filters and sensors
Complete Replacement Engine Owners replacing an existing K19 generator engine ESN, CPL, configuration, mounts, coupling, cooling and wiring
Engine with Coolpac Projects requiring a matched radiator, fan and aftercooling package Frequency, ambient rating, fan power, airflow and enclosure design
Generator-Drive Package Projects requiring broader engine-side integration Required output, alternator model, controller, base frame and protection system
Complete Generator Set Buyers requiring engine, main alternator, controller, cooling system and frame Prime, standby or continuous duty, voltage, frequency, enclosure and certification
Project Spare Engine Industrial operators maintaining a critical replacement unit Long-term preservation, accessory completeness and commissioning procedure

Commercial, Packing and Export Information

Commercial Item Reference Information
Minimum Order One engine, subject to stock and quotation confirmation
Lead Time Subject to stock, factory allocation, configuration and included accessories
Payment Terms T/T or L/C where accepted and stated in the final quotation
Trade Terms EXW, FOB, CFR or CIF subject to the agreed quotation
Departure Port Shenzhen, Shanghai or another agreed port according to the final logistics plan
Standard Packing Export wooden case or another agreed protective package
ISPM-15 Packing Available when required and confirmed before packing
Packing Dimensions and Weight Confirmed by the final packing list after the accessory scope is fixed
Export Documents Commercial invoice, packing list, bill of lading and agreed origin or test documents
Inspection Pre-shipment or third-party inspection may be arranged when agreed before order confirmation
Warranty Duration, operating-hour limit, coverage, exclusions and claim process are defined by the final sales contract

Do not rely on general website statements as the final commercial agreement. Stock, price, port, lead time, warranty and included documents must be confirmed in the quotation and contract.

Frequently Asked Questions

What is the typical 50 Hz generator-set output of the KTA19-G4?

In the referenced 1,500 rpm Coolpac configuration, Cummins lists approximately 500 kVA prime, 550 kVA standby and 396 kVA continuous output.

Why do some documents show approximately 503 kVA prime and 562 kVA standby?

Different Cummins rating references may use different assumptions for cooling-fan power, auxiliary loads and alternator performance. Use the bulletin and package that match the actual engine and cooling configuration.

Is 448 kW the electrical output of the generator set?

No. It is the gross mechanical prime output of the engine at 1,500 rpm. The referenced Coolpac package provides approximately 400 kWe or 500 kVA prime after package and conversion losses.

What is the KTA19-G4 output at 60 Hz?

At 1,800 rpm, the engine provides 507 kWm gross prime and 563 kWm gross standby power. The referenced typical generator-set outputs are approximately 455 kWe prime and 500 kWe standby.

Can the same engine be switched directly between 50 Hz and 60 Hz?

Not by changing speed alone. The control configuration, fuel calibration, cooling fan, radiator, alternator, coupling and protection settings must be verified for the selected speed.

What is the full-load fuel consumption at 50 Hz?

The referenced values are approximately 107 L/h at 100% prime load and 121 L/h at 100% standby load. The value is litres per hour, not litres per kilowatt-hour.

What is the continuous output?

At 1,500 rpm, the gross continuous engine rating is 355 kWm. The referenced typical generator-set output is approximately 317 kWe or 396 kVA.

Is every KTA19-G4 mechanically governed?

Not necessarily. The exact governor or electronic-control arrangement depends on the production build and package. Confirm the ESN, CPL, configuration number and control hardware.

Is the offered engine manufactured by CCEC?

The offered configuration may be presented as a CCEC Chongqing unit, but the actual plant and manufacturer should be confirmed from the dataplate, ESN and traceability documents.

Does the KTA19-G4 automatically meet Euro II?

Do not assume emission compliance from the model name alone. Confirm the exact emission statement, certificate, engine family, production date and destination-market acceptance.

Can it replace any K19 generator engine?

No. Compatibility depends on the ESN, CPL, configuration number, rated speed, governor, flywheel housing, coupling, mounts, cooling, fuel system and controller interface.

Which alternator brands can be matched?

The engine may be integrated with suitable Stamford, Marathon, Leroy-Somer, Mecc Alte and other generator alternators when the required electrical rating, SAE interface, coupling, efficiency and excitation system are verified.

What dimensions should be used for installation planning?

First confirm whether the order is engine-only or includes a Coolpac. The engine-only reference is approximately 1859 × 868 × 1728 mm, while the referenced Coolpac is approximately 2600 × 1344 × 1773 mm.

What information is required for a parts quotation?

Provide the ESN, CPL, current part number where available, component description, photographs and required quantity.

What information is required for a replacement-engine quotation?

Provide the original dataplate, ESN, CPL, configuration number, required frequency, generator-set model, main alternator model, controller details, cooling arrangement and installation photos.

Request a KTA19-G4 Configuration and Genset-Matching Check

To prepare an accurate quotation, the engine must be matched to the required electrical output and the existing mechanical, cooling, fuel and control interfaces.

Please provide:

  • Required prime, standby or continuous generator-set output
  • 50 Hz or 60 Hz operating frequency
  • Voltage, phase and power factor
  • Main alternator brand and model
  • Original engine model and dataplate photo
  • Engine serial number
  • CPL and configuration number
  • Governor or engine-control information
  • Flywheel housing and coupling details
  • Engine-mount and base-frame drawings
  • Radiator, fan and aftercooler configuration
  • Controller and protection-system information
  • Site altitude and maximum ambient temperature
  • Emission and certification requirements
  • Required supply format
  • Quantity and destination port

Contact ZEB Power for KTA19-G4 configuration verification, 50 Hz or 60 Hz genset matching, parts support, pricing and export delivery.

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