The QSL9 is a 4-stroke, inline 6-cylinder engine with a displacement of 8.9 liters.
It is part of Cummins' QSL series, which is known for its high power density and low emissions. The engine is designed to meet stringent emission regulations, such as the EPA Tier 4 Final and EU Stage IV standards, making it environmentally friendly.
One of the standout features of the QSL9 engine is its electronic control system. It utilizes the Cummins Common Rail fuel system, which delivers precise fuel injection for improved combustion efficiency and reduced emissions. The engine also incorporates advanced electronic controls that optimize performance and enable diagnostic capabilities for easy troubleshooting.
The QSL9 engine is turbocharged and aftercooled, which means it uses a turbocharger to increase the amount of air entering the combustion chamber, resulting in improved power output. The aftercooling system reduces the temperature of the compressed air, increasing its density and allowing for more efficient combustion.
In terms of power, the QSL9 engine offers a range of options to meet different requirements. It has a power output ranging from 250 to 400 horsepower (186 to 298 kilowatts) and a peak torque of up to 1,450 lb-ft (1,966 Nm). This provides ample power for various construction machinery applications, including excavators, wheel loaders, bulldozers, and more.
The QSL9 engine features a durable and reliable design, with a cast-iron cylinder block for enhanced strength and longevity.
It also incorporates a robust crankshaft, piston design, and high-strength connecting rods to withstand heavy-duty operation. This construction ensures that the engine can handle the rigors of construction sites and deliver consistent performance over its lifespan.
Furthermore, the QSL9 engine is designed for easy maintenance and serviceability. It has a long service interval, reducing downtime and maximizing productivity. The engine also features a modular design, which allows for easy access to components and simplified repair procedures.
