John Deere PowerTech 13.6L; Modern Engine Demands Met with Clean Slate Innovations
To be competitive in a booming market, today's diesel engines must be capable of meeting—and in many cases, exceeding—manufacturers' tough reliability and durability benchmarks, as well as various state, federal, and world emissions regulations.
During the initial stages of development of its new 13.6L PowerTech engine, John Deere took what it calls a "from-scratch approach," which started with taking heed of what customers say they need and want from this type of heavy-duty diesel powerplant. More time was spent doing research and development, so a refined end product could be produced.
John Deere's studies found that customers are very concerned with an engine's life cycle. For Deere, this means that in addition to aforementioned standards, the company had to focus on key factors, such as manufacturability and serviceability when designing the new 13.6L PowerTech. Another end-user concern was the engine's compatibility with different off-highway equipment.
Using the clean-sheet approach brought integrated systems and technologies into the I-6 powerplant's design, which results in better performance and lower emissions output, along with reduced overall size and weight. This equates to the 13.6L's capacity to make up to 684 hp and 2,250 lb-ft of torque while being 18 percent smaller and around 10 percent lighter than its predecessor in the same off-highway segment.
Innovations like incorporating a cooled exhaust gas recirculation system into the engine's basic design, using an inline Integrated Emissions Control System, and combining components like the DEF mixer and decomposition tube in the IECS enable the new, compact PowerTech to be mounted in many different positions and locations—and to meet EPA Final Tier 4 and EU Stage V off-highway emissions regulations. Having greater mounting flexibility with a reduced number of connection points, the inline system is able to accommodate complex packaging requirements while optimizing thermal management.
Maintenance-free hydraulic lash adjusters facilitate optimum valvetrain performance, less noise, lower wear, and they eliminate the need for valve-lash maintenance. In addition, the rear-mounted geartrain reduces noise and enhances the engine's operational flexibility.
Having the wiring harness, coolant and oil passages, water pump, and EGR cooler integrated into the block are improvements in reliability and fuel efficiency (parasitic losses are reduced).
The 13.6L's ECM is manufactured by John Deere Electronic Solutions and has advanced model-based controls that enhance transient control of the systems. This processor is also able to manage the boost-control system and optional compression brake.
Other features adding to the engine's fuel economy and performance are the turbocharger options and the high-pressure, common-rail fuel system. The oil-burner can be outfitted with either a single-wastegate turbo or dual-wastegate 'chargers mounted in series. Having optional systems contributes to the PowerTech's mounting flexibility. The fuel system is also integrated into the engine's basic configuration to help reduce its overall dimensions.
Engine: John Deere PowerTech 13.6L
Displacement: 13.6L (830 ci)
Engine Layout: I-6
Bore x Stroke: 5.2 x 6.5 inches (132 x 165mm)
Compression Ratio: 15.9:1
Head material: Cast-iron
Block material: Cast-iron
Piston material: Steel
Power: 684 hp (510kw)
Torque: 2,250 lb-ft (3050Nm)
Emissions: EPA Stage V, EU Tier 4 Final
Induction: Series wastegate turbochargers, air-to-air aftercooler
Cooling System: Liquid-cooled
Fuel System: High-pressure common rail
Lubrication System: Wet sump
Lubrication Capacity: TKTKTK quarts (L)
Dry Weight: 3,285 pounds (1,490 kg)
Length: 53 inches (1346 mm)
Width: 35 inches (889 mm)
Height: 37 inches (939.8 mm)