At the heart of the QSB6.7 is a 6.7-liter displacement, inline six-cylinder configuration.
This engine is known for its compact size and high power density, making it suitable for installations where space is limited. The engine features a cast-iron cylinder block for durability and long-lasting performance.
One of the key strengths of the QSB6.7 is its impressive power output. It is capable of producing up to 400 horsepower and 1,250 lb-ft of torque, providing ample power for demanding applications. The engine achieves this power while meeting stringent emission regulations, thanks to advanced fuel injection and exhaust aftertreatment technologies.
Speaking of fuel injection, the QSB6.7 utilizes a common rail fuel system. This system delivers precise amounts of fuel to each cylinder at high pressure, resulting in improved fuel efficiency and reduced emissions. The engine also incorporates Cummins' advanced electronic control module (ECM), which optimizes fuel delivery and combustion for maximum performance.
In terms of cooling, the QSB6.7 employs a liquid cooling system with a belt-driven coolant pump. This ensures optimal operating temperatures and helps to extend the engine's lifespan. The engine is also equipped with a high-efficiency air-to-air charge air cooler, which improves the combustion process and enhances overall efficiency.
The QSB6.7 is designed for reliability and durability, with features such as replaceable wet liners that simplify maintenance and reduce downtime. The engine also utilizes a high-efficiency oil filter and advanced filtration system to ensure clean oil circulation and protect critical engine components.
To meet various application requirements, the QSB6.7 offers flexibility in terms of installation options.
It is available in multiple configurations, including a standard power unit as well as keel-cooled and heat exchanger-cooled marinized versions for marine applications. The engine can be paired with a range of transmissions and driveline components to optimize performance in different applications.
Cummins provides comprehensive support for the QSB6.7 engine, including a global service network and a wide selection of genuine parts. This ensures that customers can rely on timely maintenance, repairs, and parts availability, minimizing downtime and maximizing productivity.
