HIGH-PRESSURE COMMON-RAIL (HPCR) AND ENGINE CONTROL UNIT (ECU)
The HPCR fuel system provides variable common–rail pressure and higher injection pressures up to 1,975 bar (29,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.
4-VALVE CYLINDER HEAD
The 4–valve cylinder head provides excellent airflow by utilizing a cross–flow design.
COOLED EXHAUST GAS RECIRCULATION (EGR)
EGR cools and mixes measured amounts of cooled exhaust gas with incoming fresh air to lower peak combustion temperatures, thereby reducing NOx
VARIABLE GEOMETRY TURBOCHARGER (VGT)
Varies exhaust pressure based on load and speed to ensure proper EGR flow. The combination of the cooled EGR and VGT provide low–speed torque, quicker transient response, higher–peak torque, and world–class fuel economy.
These engines utilize an exhaust filter that contains a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF). The DOC reacts with exhaust gases to reduce carbon monoxide, hydrocarbons, and some particulate matter (PM). The downstream DPF traps and holds the remaining PM. Trapped particles are oxidized within the DPF through a cleaning process called passive regeneration. Passive regeneration occurs during normal operating conditions when heat from the exhaust stream and catalysts the DOC within the exhaust filter trigger the oxidation of the trapped PM. If passive regeneration cannot be achieved due to temperature, load, or speed, then PM is removed using active regeneration — an automatic cleaning process controlled by the exhaust temperature management system.
This is the most efficient method of cooling intake air to help reduce engine emissions. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs.
JOHN DEERE ELECTRONIC ENGINE CONTROLS
Faster engine control unit (ECU) manages both the engine and the exhaust filter
Full authority electronic controls
Four times the memory, twice the RAM, and double the processing speed
Input/output capability has increased 40%.
Compact size: lower installed cost
Mounting points are the same as previous engine models
500–hour oil change
Self–adjusting poly–vee fan drive
Variable–speed fan drive increases fuel economy and decreases noise levels
R.H. and L.H. engine-mounted final fuel filters
Aluminum piston with integrated oil cooled gallery
Low–pressure fuel system with electrical transfer pump and "auto–prime" feature.