While those of us living in North America are eagerly awaiting the 2019 Jeep Wrangler Unlimited (JL) with the 3.0-liter EcoDiesel V6, our European friends are receiving a completely new diesel powertrain in their version of the JL. Europeans are getting a new 2.2-liter MultiJet II Turbo Diesel.
The new 2.2-liter MultiJet II Turbo Diesel features second-generation MultiJet technology. The new, efficient 2.2-liter diesel engine features four valves per cylinder, a belt-driven Double Over Head Camshafts (DOHC), a 2,000-bar Common Rail injection system, solenoid injectors, and a variable geometry turbocharger (VGT). Mated to a new 8-speed automatic transmission, the 2.2-liter turbo diesel engine delivers 200 horsepower at 3,500 rpm and a torque of 332 ft.-lbs at 2,000 rpm.
The 2.2-liter engine also features fuel-saving Engine Stop-Start (ESS) technology. The main characteristics of the 2.2-liter engine are:
- Cylinder Block Is Made Of Aluminium Alloy.
- Balancing System Is A Gear Driven Lancaster System Embedded Into Block.
- Cylinder Head Is In Aluminium Alloy & Timing System Is A Double Overhead Camshaft For A 16-valve Configuration.
- Valvetrain Features Roller Finger Followers & Hydraulic Lash Adjusters.
- Fuel Injection System Is A Second Generation Multijet Technology, 2000 Bar Injection Pressure With Solenoid Injectors Capable of Injection Rate Shaping Management.
- Turbocharger Is A Variable Geometry Managed By An Electric Actuator.
The engine emissions are managed with a new multiway Exhaust Gas Recirculation (EGR) system, with Low-Pressure Exhaust Gas Recirculation (LP EGR) and High-Pressure Exhaust Gas Recirculation (HP EGR), both cooled. In addition, the air is cooled with a Water Cooled Air Cooler that helps to reduce emissions improving the engine responsiveness. The after-treatment has an underfloor Selective Catalytic Reduction (SCR) system that reduces nitrogen oxide (NOx) to negligible values and a Diesel Oxidation Catalysts (DOC) and Diesel Particulate Filters (DPF) close-coupled to the engine for the particulate Matter reduction. Both these after-treatment systems make the vehicle compliant to the new RDE Euro 6/D standards.
Compared to the 3.0-liter EcoDiesel engine the North American market will be getting starting in 2019, Wrangler Unlimited models will offer the 3.0-liter EcoDiesel V-6 engine, rated at 260 horsepower and 442 lb.-ft. of torque, with Engine Stop-Start (ESS) standard. A new eight-speed automatic transmission is standard and is designed to handle the increased torque output.
FCA US engineers adapted the engine – manufactured by FCA-owned V.M. Motori – to meet the NAFTA region’s regulatory requirements.
Starting in 2019, the EcoDiesel V-6 engine implements new turbocharger technology with a low-friction bearing designed for low end and transient performance. The upgraded EcoDiesel V-6 engine now also features low-friction pistons to improve fuel economy, reduce greenhouse gas emissions and provide an enhanced combustion system – new injector nozzle, piston bowl, and glow plug with an integrated combustion pressure sensor to optimize combustion.