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), 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. 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 emission improving the engine responsiveness. The aftertreatment has a 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 aftertreatment systems makes 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 integrated combustion pressure sensor to optimize combustion.