The Maxxforce 9 is a powerful and reliable diesel engine designed for medium-duty commercial trucks. Built on International’s proven I-6 architecture, the MaxxForce 9 delivers exceptional performance, durability, and serviceability, making it a popular choice for various vocational applications. This engine provides a significant power boost in the Class 7-8 truck range, offering between 300 and 330 horsepower and a substantial torque range from 800 to 950 ft.-lbs.
The International MaxxForce DT, a predecessor to the MaxxForce 9, known for its robust design and reliability.
Performance and Reliability: The Hallmarks of MaxxForce
The MaxxForce brand is synonymous with performance. For MaxxForce 9 users, performance extends beyond mere horsepower and torque. It signifies dependability, ensuring the engine consistently performs its tasks, from daily deliveries to heavy-duty hauling, with unwavering reliability and longevity. International engineers retained core components from the renowned DT engine series, focusing on evolutionary improvements for enhanced reliability in the MaxxForce 9.
Animation illustrating the internal workings of a diesel engine, highlighting the complexity and precision of components like those found in the MaxxForce 9.
This commitment to reliability is evident in features like the redesigned wiring harness. Its robust foam-over-molding ensures consistent shape and fit, simplifying assembly and enhancing serviceability, ultimately minimizing downtime and maximizing productivity.
Built for the Long Haul: Durability Features of the MaxxForce 9
The MaxxForce 9 inherits the heavy-duty durability of International’s medium-duty engines, thanks to its premium wet-sleeve design. This design promotes even cylinder cooling, eliminating hot spots and ensuring consistent cylinder shape during thermal expansion. The engine’s robust architecture, including six head bolts per cylinder and bearing-cap ladder reinforcement, provides exceptional strength and extends head-gasket life.
Cross-section of a diesel engine cylinder, showcasing the wet-sleeve design that contributes to the durability of the MaxxForce 9.
Further enhancing durability, the MaxxForce 9 boasts a premium valvetrain with Cam Roller Followers, reducing valve-lash growth. Replaceable valve seats and guides facilitate easy cylinder head rebuilding, while four valves per cylinder optimize performance, reduce emissions, and minimize valvetrain wear. The engine’s in-frame rebuild capability ensures cost-effective maintenance and enhances resale value. This allows for complete overhauls without removing the engine from the chassis, saving significant time and labor costs.
Versatility and Customization: Adapting to Diverse Needs
The MaxxForce 9 is designed for versatility, catering to a wide range of vocational applications. International’s integrated approach allows for extensive customization, offering thousands of build configurations to meet specific customer requirements. Features like an upgraded EGR system for reduced NOx emissions without compromising fuel efficiency, a maintenance-free closed-crankcase ventilation system, and a new intake throttle for DPF regeneration and protection, further enhance the engine’s adaptability.
Conclusion: Power and Reliability for Demanding Applications
The MaxxForce 9 stands as a testament to International’s commitment to building powerful, reliable, and durable diesel engines. Its robust design, advanced features, and customizable configurations make it an ideal solution for a variety of medium-duty trucking needs. Backed by a vast dealer and service network, the MaxxForce 9 provides dependable performance and long-term value for truck owners and operators. This engine is a workhorse, delivering consistent power and performance across a range of demanding applications.
