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The new third-generation 3.0-liter V-6 EcoDiesel is the highlight of the 2020 Ram 1500.

Ram's New Diesel Engine Ready to Crank

The new third-generation 3.0-liter V-6 EcoDiesel is the highlight of the 2020 Ram 1500. The truck will offer 480 lb.-ft. of torque, with towing capability up to 12,560 pounds.

The EcoDiesel is available in all 2020 Ram 1500 models and configurations, including a first-time offering in the Ram Rebel. The truck goes on sale in the fourth quarter of 2019—pricing and fuel economy ratings will be announced closer to the truck’s sale date.

All About That Torque

The new 3.0-liter EcoDiesel V-6 reaches peak torque at 1,600 rpm, a 14 percent increase from the previous-generation EcoDiesel V-6 that peaks 400 rpm earlier. Horsepower increases 8 percent to 260 horsepower at 3,600 rpm.

Several significant changes contribute to the new EcoDiesel’s improved dynamic and fuel economy performance, according to Ram, including:

  • A new-generation water-cooled turbocharger with variable geometry turbine (VGT)
  • Redesigned cylinder head intake ports to improve swirl and flow
  • The exhaust gas recirculation (EGR) system design has been updated to a dual loop (low and high pressure) system. The added low-pressure circulation system draws gases after the diesel particulate filter, thus minimizing turbocharger energy losses, which increases fuel economy
  • Optimized compression ratio to 16.0:1 from 16.5:1
  • High-pressure (29,000 psi/2,000 bar) direct-injection fuel injector nozzles were redesigned to match the newly designed and optimized combustion chamber
  • Lightweight aluminum alloy pistons were completely redesigned to include thinner rings and low-friction coating on the pin and side skirts to reduce losses
  • NVH has been reduced by offsetting piston pin by 0.3 millimeters from the centerline; thus, minimizing mechanical noises
  • The lower portion of the two-piece oil sump uses a lightweight sandwiched polymer/metal material that further reduces NVH
  • The dual vacuum pump system uses electric and a new mechanical low-friction pump with new blades that improve overall system efficiency

The 3.0-liter EcoDiesel V-6 uses dual overhead camshafts (DOHC) with four valves per cylinder and a 60-degree angle between the cylinder banks. The block is cast with compacted graphite iron, which provides strength to dampen vibrations, but weighs less than gray cast iron. A compacted graphite iron bedplate adds rigidity to the block.

The EcoDiesel V-6 uses a forged steel crankshaft and connecting rods for strength and durability. The aluminum alloy pistons are cooled on the underside via oil jets. Heat-treated aluminum cylinder heads use individual bearing caps to reduce friction and minimize NVH. The chain-driven overhead camshafts employ roller-finger followers.
 
The 3.0-liter EcoDiesel V-6 is produced at the FCA Cento facility in Ferrara, Italy.