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Cummins Qsm11 Complete Diesel Engine used for Komatsu PC450 Hyundai R480LC Excavator

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  • QSM11

  • Cummins

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The Cummins QSM11 is a high-performance, 6-cylinder, in-line, 4-stroke diesel engine renowned for its exceptional power density, reliability, and fuel efficiency . With a substantial 10.8-liter (661 in³) displacement and featuring turbocharged and aftercooled aspiration , this engine is engineered to deliver dependable power across a wide range of heavy-duty industrial, marine, and construction applications . Its versatile design and advanced engineering make it a preferred choice for Original Equipment Manufacturers (OEMs) and operators worldwide.

 Key Technical Specifications

Parameter Specification
Engine Model Cummins QSM11 Series (e.g., QSM11-KC, QSM11-SW, QSM11-C)
Configuration In-line, 6-Cylinder, 4-Stroke
Aspiration Turbocharged & Aftercooled
Displacement 10.8 L (661 in³)
Bore × Stroke 125 mm × 147 mm (4.92 in × 5.79 in)
Rated Power Ranges from 220 kW (295 hp) up to 526 kW (715 hp) @ 1800-2500 rpm
Peak Torque Ranges from 1160 lb-ft (1573 N•m) up to 1750 lb-ft (2373 N•m)
Emissions Compliance EPA Tier 2/3, IMO, RCD, and EU Stage IIIA compliant, depending on model and region
Note: Specifications and power ratings can vary depending on the specific model variant, application configuration, and emission certification. Please refer to the official Cummins data sheets for precise information.

 Primary Applications & Equipment

The QSM11 engine is built to be the powerhouse behind a vast array of heavy-duty machinery and equipment, including:

  • Construction & Mining Equipment: Excavators (e.g., Komatsu PC450, Hyundai R480LC) , Wheel Loaders , Articulated Dump Trucks, and Drilling Rigs .

  • Marine Applications: Used for both Recreational and Commercial Propulsion and Auxiliary Power in various vessels .

  • Power Generation: Ideal for use in prime and standby power generator sets .

  • Industrial and Other Applications: Also applied in agricultural machinery (e.g., tractors, combine harvesters) , material handling equipment, and on-highway vocational trucks .

Core Technologies & Key Features

  • Advanced Fuel System: Utilizes the Cummins Celect full-authority electronic unit injection fuel system . This system optimizes combustion for increased engine performance, superior fuel efficiency, and low emissions . Some industrial variants are equipped with a high-pressure common rail system for precise fuel management .

  • Robust Engine Design: Built for durability, the QSM11 features a heavy-duty design with elements like a cast aluminum oil pan to resist corrosion , ensuring a long service life and reliability in tough conditions .

  • Efficient Turbocharging: Equipped with a Cummins Turbo Technologies turbocharger optimized for application-specific needs, such as marine use with a large capacity seawater aftercooler .

  • Global Support and Warranty: Backed by Cummins' extensive global service and parts network , with support options including video technical support and online services for many industrial applications . Some suppliers also offer a one-year warranty .

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KELUO is a company of machinery, engines, used equipment and spare parts founded by Hanhan in combination with HANJIU, Elephant in the industry.
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