The PACCAR MX-13 12.9 L.
- Manufacturer: Produced by PACCAR, an American company known for its heavy-duty truck engines.
- Displacement: Available in various displacements, commonly 12.9 liters.
- Application: Designed for heavy-duty commercial vehicles, including trucks and buses.
- Power Range: Offers a range of horsepower options, often from 380 to 565+ horsepower.
- Torque: Provides high torque levels, suitable for heavy hauling and long-distance transportation.
- Fuel Efficiency: Known for good fuel efficiency, helping reduce operational costs.
- Emissions: Complies with emissions regulations, including EPA standards.
- Technology: Features advanced technologies like common rail fuel injection and turbocharging.
- Durability: Built for reliability and durability, with robust components.
- Maintenance: Designed for ease of maintenance, reducing downtime.
- Integration: Compatible with various truck brands and models, including Kenworth and Peterbilt.
This engine features enhanced durability, reduced complexity, performance upgrades, increased downspeeding capability and more efficient combustion. The result: More power, longevity, uptime, ease of service and driver satisfaction – plus, even better fuel economy compared to the EPA 2017 MX-13 engine.
The PACCAR MX-13 engine guarantees a smooth-operating, high-performance powertrain of unmatched capability, optimized for a seamless integration with the PACCAR 12-Speed Transmission and PACCAR 40K Axles.
REDUCED COMPLEXITY AND PERFORMANCE UPGRADES
The new-generation PACCAR MX-13 engine challenges convention and pushes boundaries to produce a less complex, easier-to-service solution that enhances reliability.
For example, the fully-encapsulated engine harness – a PACCAR exclusive – protects much better against the elements. Improved routing reduces wiring congestion and block-mounted connectors ensure a stable, stress-free solution. Connections between the engine and vehicle were reduced and further protected from the elements.
The new combined engine and aftertreatment control module eliminates wiring harnesses and connectors for a streamlined, highly-reliable design. A constant power source improves the shut-down sequence and enables immediate battery disconnect.
GREATER RELIABILITY AND MAXIMUM UPTIME
PACCAR is an innovation company, forever advancing the state-of-the-art in heavy duty diesel engines. With the PACCAR MX engines for 2021, virtually every part of the combustion process – and each critical component that helps produce and contain it – was scrutinized, modified, and improved. The objective: To design and produce a heavy-duty engine that not only meets EPA standards and offers unprecedented fuel efficiency, but to also produce an engine that runs longer, performs better, and maximizes your productivity. Mile after mile, day in and day out.
STRUCTURAL ENHANCEMENTS
The PACCAR MX-13 engine incorporates several design changes that strengthen load-bearing components. The crankshaft, for example, features optimized main bearing and connecting rod diameters for improved load distribution. The addition of counter-weights on the crankshaft further reduces vibration and noise – something the driver will instantly notice and appreciate.
Oil flow to the camshaft was increased to reduce wear and to protect critical rotating assemblies. The valve train was also optimized to decrease camshaft loading and a diamond-like low-friction coating was added to the engine brake mechanism to increase the durability of the upper valve train.
ALL-NEW FUEL MODULE
The fuel module was optimized for service and improved performance. The primary and secondary fuel filters are engine-mounted for easier, faster access. A fuel blender and 12 V heater come standard for better cold weather performance. The mistake-proof filter design speeds filter exchanges and is also aligned with oil change intervals for reduced downtime. An improved fuel priming pump is easier to use during service.
IMPROVED FUEL ECONOMY
Ultra-high combustion chamber pressure and lower friction components together with PACCAR’s innovative synergetic piston design combine to reduce combustion noise, boost performance and increase fuel efficiency while significantly reducing your carbon footprint.
The PACCAR MX Engine’s cutting edge design has been optimized to maximize air flow into the cylinder and utilizes multi-pulse fuel injection to greatly improve combustion efficiency, reduce noise and provide thermal management for the after treatment system.
A smaller, more efficient turbocharger improves responsiveness without sacrificing power. Designed for all driving conditions, the turbocharger boosts power and torque at lower speeds for better driveability and more efficiency while delivering better fuel economy on the highway.
NEXT GENERATION AFTERTREATMENT SYSTEM
PACCAR engines are known for their clean, efficient, reliable and easily serviced aftertreatment systems. For 2021, PACCAR strengthens that commitment with refinements to further reduce particulates and NOx without sacrificing power, performance or fuel economy.
PERFECTING THE PISTON
PACCAR’s new synergetic piston design with optimized bowl geometry achieves an unprecedented level of air/fuel mixing – enhancing combustion, fuel economy and emission control. The combustion process is also much quieter, substantially reducing engine noise inside and outside the cab.
MORE EFFICIENT POWER WITH IMPROVED DOWNSPEEDING
The PACCAR MX-13 offers a peak torque at a low RPM – delivering a smoother driving experience, higher productivity and greater fuel economy than ever before.
WORLD-CLASS TECHNOLOGY AND DURABILITY TESTING
MX engines have been thoroughly tested both in engine test cells and over-the-road in a number of challenging conditions. Extensive customer field testing has accumulated over 250 million miles of real-life usage. This in-depth testing and validation has developed an engine that delivers high-value performance in the real world.
The PACCAR Engine Company, based in Columbus, Mississippi, is home to a world-class engine manufacturing facility. From the CNC machining centers for engine blocks and cylinder heads to robot-ic assembly, MX-13 engines are manufac-tured to extraordinarily high standards. In order to achieve excellent repeatability and high quality, the plant utilizes torque-controlled tooling, and all engines are 100% hot tested before they leave the facility.