Details
CCEC Cummins KTA19-G2 336kW Diesel Generator Engine
The Cummins KTA19-G2 is a heavy-duty, 6-cylinder in-line diesel engine engineered specifically as a prime mover for generator sets operating at 1500 RPM (50Hz). Manufactured by Chongqing Cummins Engine Co., Ltd. (CCEC) under strict license from Cummins Inc., this 18.9-liter turbocharged and aftercooled engine delivers 336 kW (450 HP) of reliable prime power. It serves as the baseline workhorse for standard 400kVA commercial and industrial diesel generator installations worldwide.
As a specialized engine supplier, HekoPower provides complete CCEC KTA19-G2 engine assemblies, factory-matched accessories, and direct engineering support to help generator builders and plant operators source genuine power equipment with verified origin documentation.
Tech Specs of CCEC Cummins KTA19-G2 336KW
General Engine Data
Engine Model: Cummins KTA19-G2-336KW
Type: 6 Cylinders in Line, 4 Stroke Diesel
Displacement: 19 L
Bore * Stroke: 159 * 159
Net Weight: 1926 Kg
Overall Dimension: 1324mm*835mm*1183mm
Key Performance Data
Rated Power/Standby Power: 336 kW/450HP, 369 kW/459HP
Rated Speed: 1500 rpm
Low Idle Speed: 575-775 rpm
Fuel Consumption @ Rated Power: 83 L/Kw.h
Continuous Output/Speed: 328 kW/440HP @ 1500 rpm
More Technical Data
Engine Exhaust Manifold: Optional for Wet Exhaust manifold Heat exchanger
Aspiration: Turbocharged/Aftercooled
Compression Radio: 14.5:1
Fuel System: Cummins PT Pump, Direct Injection
Starting System: Electrical starting motor (24V)
Cooling Method: Water cooling
Lowest Starting Temp (Without auxiliary system): -12℃
Governor Type: Mechanical Control
Technical Comparisons: KTA19-G2 vs. Higher Output Variants
When selecting a power unit within the Cummins K19 family, generator manufacturers frequently evaluate the KTA19-G2 against higher-rated models like the KTA19-G3 (392kW prime @ 1500RPM) or 60Hz variants running at 1800RPM. Understanding these operational differences prevents over-specifying equipment or causing premature engine wear.
The KTA19-G2 is optimized specifically for 50Hz applications operating at 1500 RPM, producing 328 kW continuous power, 336 kW prime power, and 369 kW standby power. The KTA19-G3 uses higher turbocharger boost ratios and modified fuel delivery parameters to push prime power output to 392 kW. While the KTA19-G3 fits higher-capacity generator frames, the KTA19-G2 provides lower exhaust temperatures, reduced fuel burn at partial loads, and extended overhaul intervals for operations that do not require maximum output.
Operating frequency is another key distinction. Running a KTA19-G2 at 1800 RPM to achieve 60Hz power alters its thermal profile and power output—reaching up to 392 kW standby / 495 HP under 60Hz conditions. However, using a 50Hz-calibrated KTA19-G2 engine directly in a 60Hz grid without re-adjusting the governor, fuel pump calibration, and turbocharger housing will cause improper air-fuel ratios and high exhaust gas temperatures. Purchasing an engine pre-configured for the target grid frequency ensures compliant performance from day one.
Real Application Scenarios & Generator Matching
Matching the KTA19-G2 to the correct electrical alternator is critical for stable voltage regulation and engine durability. Because the engine delivers 336 kW at prime rating, it pairs effectively with 400kVA to 420kVA alternators (assuming a 0.8 power factor, yielding 320 kW to 336 kW electrical output).
Prime Power for Remote Industrial Sites
In continuous continuous mining operations, agricultural processing plants, and off-grid infrastructure, power reliability takes precedence over complex electronics. The KTA19-G2 running at 336 kW prime power provides steady 400kVA output capable of handling heavy inductive loads, such as large electric motors and air compressors, with minimal voltage dip.
Standby Power for Critical Infrastructure
When configured for standby power duty, the engine can deliver up to 369 kW (495 HP) to back up 450kVA generator systems in commercial real estate, data centers, and healthcare facilities. Its mechanical responsiveness allows rapid load acceptance during utility mains failure, ensuring critical operations remain uninterrupted.
Maintenance, CPL Identification, and Replacement Guidance
Maintaining long-term performance requires adhering to basic mechanical checks and verifying genuine replacement parts. Because the K19 platform has been produced for decades, identifying the exact Control Parts List (CPL) is essential when sourcing replacement engines or major overhaul kits.
Locating the Engine CPL and Serial Number
Every genuine CCEC KTA19-G2 engine features a stamped metal dataplate on the side of the gear housing and engine block. Before ordering a replacement unit or spare parts from HekoPower, inspect the dataplate for the 8-digit engine serial number and the 3-digit or 4-digit CPL number. The CPL dictates the exact part numbers for the turbocharger, PT fuel pump calibration, pistons, and camshaft profile. Providing your CPL during procurement guarantees 100% mechanical drop-in compatibility.
PT Fuel System Troubleshooting Tips
Irregular idle speeds or black exhaust smoke under load are rarely caused by structural internal failure. In most cases, these issues trace back to restricted fuel supply filters, air drawn into the suction side of the PT pump, or incorrect mechanical governor link adjustments. Regularly draining water separators and checking fuel inlet line fittings prevents common fuel delivery faults.
Common Misconceptions Regarding the KTA19-G2 Engine
Several persistent misunderstandings surround the application and procurement of this engine series:
Misconception 1: "Higher kilowatt output is always better for generator longevity." Oversizing a generator set by selecting a higher-rated engine like the KTA19-G3 when demand only requires 300 kW leads to "wet stacking." Running a diesel engine under lightly loaded conditions (below 30% capacity) causes incomplete fuel combustion, leading to unburned fuel accumulation in the exhaust manifold. Matching the 336 kW capacity of the KTA19-G2 precisely to a 400kVA load profile maintains healthy operating temperatures and prevents cylinder glazing.
Misconception 2: "All 19-liter Cummins engines use identical internal components." While the block casting remains similar across the K19 family, internal parts like fuel injector spray tips, piston crown bowls, and turbocharger turbine wheels differ based on duty cycle and CPL designation. Assuming all K19 parts are interchangeable can result in poor fuel efficiency or premature piston crown erosion.
Exploring the Broader Cummins K19 Generator Series
Selecting the right power unit requires assessing whether your generator set demands standard 336 kW prime output or a higher-capacity rating. HekoPower supplies the complete spectrum of CCEC G-Drive engines to support custom generator assembly and fleet maintenance across diverse global markets.
Cummins K19-G Series, original products from Chongqing Cummins Engine Plant(CCEC). This series mainly includes KTA19-G2-336KW, KTA19-G3-403kW, KTA19-G3A-448kW, KTA19-G4-448KW, KTAA19-G5-502KW, KTAA19-G6-570KW, KTAA19-G6A-610KW, KTAA19-G7-610KW, KTA19-G2-392KW, KTA19-G3-463KW, KTA19-G3A-507KW, KTA19-G4-507KW, KTAA19-G5-555KW, KTAA19-G6-620KW, KTAA19-G6A-664KW, KTAA19-G7-664KW, KTAA19-G8-575KW.
Frequently Asked Questions
What is the fuel consumption rate of the Cummins KTA19-G2 at 1500RPM?
At 100% prime load (336 kW @ 1500 RPM), the KTA19-G2 consumes approximately 205 g/kWh of diesel fuel, translates to roughly 82 to 85 liters per hour under full electrical load. Operating at 75% prime load drops fuel burn to approximately 62 liters per hour, offering an efficient operating sweet spot for continuous prime power applications.
What generator size is best matched to a Cummins KTA19-G2 engine?
The KTA19-G2 336kW engine is designed for 400kVA prime power diesel generator sets (320kW electrical output at 0.8 power factor) or 450kVA standby power units. It provides sufficient mechanical reserve to handle block loading while maintaining 50Hz frequency stability.
How can I verify if a CCEC Cummins KTA19-G2 engine is genuine?
Authentic CCEC engines feature clear laser-etched dataplates with traceable engine serial numbers, CCEC factory casting logos on the cylinder block, and matching CPL documentation. HekoPower verifies all serial numbers against factory supply records before shipment, ensuring complete authenticity and full manufacturer warranty coverage.
What is the standard warranty and lead time when ordering from HekoPower?
HekoPower offers a standard 12-month or 1,500-running-hour warranty on complete CCEC KTA19-G2 engine units, whichever comes first. Typical lead times range from 15 to 30 business days depending on specific CPL configurations and shipping destinations.
