Details
CCEC Cummins MTAA11-G2A 234kW Generator Drive Diesel Engine
The CCEC Cummins MTAA11-G2A is a 10.8-liter, in-line 6-cylinder diesel G-Drive engine purpose-built for heavy-duty power generation applications. Operating at 1500 RPM for 50Hz generator sets, this engine delivers a continuous prime power output of 234kW (314 HP) and a standby rating of 257kW (345 HP). Manufactured under strict manufacturing protocols by Chongqing CCEC Cummins Engine Co., Ltd., the MTAA11-G2A integrates mechanical PT fuel injection with air-to-air charge air cooling to maintain high thermal efficiency under sustained industrial loads.
As an international engine supplier, HekoPower provides brand-new, complete MTAA11-G2A engine assemblies tailored for generator OEMs, plant engineering retrofits, and overseas fleet replacements. Every unit undergoes rigorous load-bank validation before dispatch to ensure direct compatibility with standard 250kVA–300kVA generator alternators.
Tech Specs of Cummins MTAA11-G2A 234kW
General Engine Data
Engine Model: Cummins MTAA11-G2A-234KW
Type: 6 Cylinders in Line, 4 Stroke Diesel
Displacement: 10.8 L
Bore * Stroke: 125 * 147
Net Weight: 1007 Kg
Overall Dimension: 1306mm*914mm*1280mm
Key Performance Data
Rated Power, Standby Output: 234 kW, 257 kW
Rated Speed: 1500 rpm
Low Idle Speed: 675-750 rpm
Fuel Consumption @ Rated Power: 188 L/Kw.h
Max. Running Altitude: 1500 m
Continuous Output/Speed: 175 kW @ 1500 rpm
More Technical Data
Fuel System: Cummins PT Pump, Direct Injection
Aspiration: Turbocharged/Charge Air Cooled
Compression Radio: 16.1:1
Lowest Starting Temp (Without auxiliary system): -12℃
Cooling Method: Water Cooled
Governor Type: Mechanical Control, ≤ 5%
Engine Coolant Volume: 9.5 L
Electrical System (Starter Motor/Alternator): 24V
Technical Engineering & Comparative Analysis
Evaluating the MTAA11-G2A within the broader Cummins M11 engine family requires understanding specific air handling, turbocharging, and power output variations across factory configurations.
MTAA11-G2A vs. MTA11-G2 (Charge Air Cooling System)
The primary distinction between the MTAA11-G2A and the older MTA11-G2 lies in the charge air cooling architecture. The MTAA11-G2A utilizes an Air-to-Air Aftercooling setup. Ambient air cools the compressed intake air through a dedicated front-mounted radiator core before it enters the cylinder manifold. In contrast, the standard MTA11-G2 relies on Jacket Water Aftercooling (JWAC), using engine coolant to lower intake temperatures. Air-to-air cooling drops intake manifold temperatures more effectively, enabling the MTAA11-G2A to achieve cleaner combustion, reduced thermal stress on pistons, and higher overall power density.
MTAA11-G2A (234kW) vs. MTAA11-G3 (282kW)
While sharing the same 10.8-liter block, 125mm bore, and 147mm stroke, the MTAA11-G2A and MTAA11-G3 differ in fuel calibration and turbocharger matching. The MTAA11-G2A is rated at 234kW prime power at 1500 RPM, optimized for steady fuel consumption and extended continuous duty cycles. The MTAA11-G3 steps up output to 282kW prime power by employing a higher-delivery PT fuel pump and an altered turbocharger turbine trim. Selecting the MTAA11-G2A prevents over-stressing 250kVA-scale alternators while delivering superior fuel economy when maximum kilowatt output is unnecessary.
MTA11-G2A 50Hz (1500 RPM) vs. MTA11-G2B 60Hz (1800 RPM)
Grid frequency dictates engine operational speed. The MTAA11-G2A operates strictly at 1500 RPM to power 50Hz alternators standard across Europe, Asia, Africa, and South America. The sister MTA11-G2B variant is governed for 1800 RPM to supply 60Hz power grids common in North America. Running a 50Hz-rated MTAA11-G2A at 1800 RPM destabilizes the mechanical governor calibration, alters oil pressure thresholds, and risks premature valve train fatigue.
Technical Misconception Tip: Many equipment operators assume the "M11" designation implies an 11.1-liter displacement. The CCEC MTAA11 platform actually displaces 10.8 liters. It relies on a heavy-duty 24-valve overhead camshaft design to deliver high torque without requiring a larger physical engine block.
Real-World Application Scenarios
The MTAA11-G2A engine assembly excels in mid-tier prime power generation where load demand shifts rapidly.
Continuous Prime Load in Mining & Construction
Off-grid mining camps, stone crushing facilities, and infrastructure sites depend on the MTAA11-G2A as a primary 250kVA generator driver. Its mechanical PT (Pressure-Time) fuel pump handles variable fuel quality better than complex common-rail systems, making it dependable in field conditions where high-sulfur diesel is prevalent.
Emergency Standby Duty for Commercial Facilities
Data centers, hospitals, and municipal pumping stations utilize the MTAA11-G2A in standby configuration at its 257kW output rating. The engine's high power-to-weight ratio supports quick cold-start response, accepting a 100% block load step in compliance with ISO 8528-5 performance criteria.
High-Altitude and Tropical Operations
Equipped with a Holset turbocharger and an air-to-air cooling circuit, the MTAA11-G2A minimizes altitude-induced power loss. It maintains rated power output at elevations up to 1,500 meters without requiring fuel pump derating, making it suitable for tropical and high-altitude industrial projects.
Maintenance Schedules & Engine Replacement Guidelines
Replacing an end-of-life engine in an existing generator set requires careful physical and technical matching to ensure smooth commissioning.
Critical CPL Code Matching
When ordering a replacement MTAA11-G2A complete engine assembly from HekoPower, verify the Control Parts List (CPL) code stamped on your original engine dataplate. Standard CPL designations for this model include CPL 2165 and option list D353009GX03. Matching the CPL ensures that flywheel housing SAE sizes, starter motor orientations, shutoff solenoid voltages, and exhaust manifold connection angles align with your existing canopy or skid frame.
Preventive Maintenance Intervals
Change engine oil and filters every 250 operating hours or 12 months. Use high-performance 15W-40 multi-grade oil formulated for heavy-duty turbocharged diesels. Inspect PT fuel injectors and valve lash clearances every 1,500 operating hours to maintain combustion efficiency and prevent exhaust smoke.
Maintenance Misconception Tip: Avoid running an MTAA11-G2A engine under light loads (below 30% rated capacity) for extended periods. Sustained low-load operation causes "wet stacking"—unburned fuel pooling in the exhaust system due to insufficient cylinder pressure and low operating temperatures.
Cummins M11 Power Family Matrix
Selecting the proper power node is critical when configuring industrial generator sets. Beyond the 234kW MTAA11-G2A model featured here, the CCEC M11 product line includes multiple output configurations designed for distinct power requirements.
Cummins M11-G Series, original products from Chongqing Cummins Engine Plant(CCEC). This series mainly includes MTAA11-G2-50HZ, MTAA11-G2-60HZ, MTAA11-G2A-234KW, MTAA11-G3-282KW.
Frequently Asked Questions
What is the exact power output of the Cummins MTAA11-G2A engine?
The CCEC Cummins MTAA11-G2A produces a continuous prime power output of 234kW (314 HP) at 1500 RPM for 50Hz applications. It provides an emergency standby power rating of 257kW (345 HP).
Does HekoPower supply complete MTAA11-G2A engine assemblies or bare blocks?
HekoPower supplies the MTAA11-G2A both as a complete G-drive engine assembly (including turbocharger, water pump, PT fuel system, starter motor, alternator, and cooling fan) and as a short or long block for rebuild projects.
Can this engine run at 1800RPM for 60Hz generator applications?
The MTAA11-G2A is optimized specifically as a Cummins MTAA11-G2A 50Hz diesel engine running at 1500RPM. For 60Hz (1800RPM) applications, contact our engineering team to request the corresponding standard M11 series variant.
What fuel system is installed on the MTAA11-G2A?
The MTAA11-G2A uses the classic Cummins PT (Pressure-Time) mechanical fuel injection system. This system is mechanical, simple to service in the field, and durable when operating on varied fuel grades.
How does HekoPower ensure quality for international engine shipments?
Every MTAA11-G2A engine supplied by HekoPower is sourced as an original CCEC unit, verified against factory production logs, and subjected to standard pressure checks and load testing before export packaging.
