John Deere tractor engine development-How it all works!

John Deere's four-valve common-rail PowerTech Plus engines feature a number of components designed to reduce emission levels and overall running costs, while maintaining or improving performance, fuel consumption, durability and torque:

• (A)Common-rail injection
• (B)Exhaust gas recirculation (EGR)
• (C)4-valve Cylinder Head
• (D)Variable speed cooling fan
• (E)Dual-stage Charge Air Cooler
• (F)Variable Geometry Turbocharger (VGT)