Overview

Fuel Efficient Technology

MaxxForce 15 liter engines combine the most advanced engine technologies to deliver more torque and responsiveness at low rpm for outstanding fuel efficiency in heavy-duty vehicles. A high-pressure common-rail fuel system, dual sequential turbos, effective heat-management system and low-friction design convert the highest percentage of your fuel into power you can use. And that adds up to low cost of ownership.

Big Power in Rough Terrain

One look at the MaxxForce 15 liter power curves tells the story. Dual sequential turbos and a high-pressure injection system help deliver peak torque at 1,000 rpm versus typical 1,200 rpm for most competitors. All the power you need, whenever and wherever you need it.

Proven Performance

The MaxxForce 15 uses gray iron design that is proven in over 1.2 million on-road units.

A major key to MaxxForce Big Bore performance is its advanced fuel system, which features injection pressures of 2,200 bar (approximately 32,000 psi), for precise fuel dosing, injection timing and optimal combustion. The results: better fuel efficiency, quieter operation and in-cylinder reduction of emissions.

Goes The Extra Mile. Per Gallon.

MaxxForce Big Bore engines combine the most advanced engine technologies to deliver more torque and responsiveness at low rpm for outstanding fuel efficiency. A high-pressure common-rail fuel system, dual staged turbos, innovative heat-management system and low-friction design convert the highest percentage of your fuel into power you can use. And that adds up to low cost of ownership.

• High pressure fuel delivery at low RPMs improves performance and fuel economy
• Engine can operate at full power when component friction is lowest
• Multiple injection events ensure low NVH and clean operation
• Tenths of a percentage improvement and fuel economy means huge annual savings for Class 8 truck operations.

MaxxForce 15 liter engines use dual sequential turbochargers to deliver powerful performance from stop light to mountaintop.

• The smaller, primary turbo responds quickly for immediate take-off at low engine speeds, and the larger, secondary turbo provides peak power at higher speeds and on steep grades
• Peak torque is achieved at 1,000 rpm holds steady to around 1450 rpm, a much lower engine speed than other big bore engines. This reduces gear-shifting needs uphill and allows for shifting at lower speeds when accelerating
• This system offers performance and reliability without the complexity of a variable geometry turbocharger

Designed for heavy duty and heavy haul, the MaxxForce 15 incorporates the only four-bolt connecting rod design in the industry. This assures extraordinary strength for these key power generation components.

• Outstanding strength and resilience
• Key contributor to the million-mile-plus design life of the MaxxForce 15
• Four-bolt design assures the clamping force and rigidity required for the extreme loads and terrain for which the 15 liter is designed

• Engine Type: Diesel, 4-cycle
• Configuration: Inline 6-cylinder
• Displacement: 15.2 L (928.17 cu. in.)
• Bore and Stroke: 5.4 in. & 6.75 in. (137mm & 177mm)
• Compression Ratio: 16.0:1
• Aspiration: Dual Sequential Turbochargers, Intercooler & Aftercooler
• Combustion System: Direct Injection
• Lubricating System Capacity: 40 quarts (38 L)
• Total Engine Weight (dry): 3,150 lbs. (1,430 kg)
• Dimensions: L 56.6 in. x W 49 in. x H 51in. (L 146 cm x W 124 cm x H 129 cm)
• Valves: 4 Valves Per Cylinder, Overhead Cam Actuated
• B50 Design Life: 1,200,000 mi (1,931,000 km)