2022 Jeep Grand Cherokee 4Xe Hybrid Overland - Ultimate In-Depth Look

First-ever Grand Cherokee 4xe
The all-new 2022 Grand Cherokee 4xe is the first Grand Cherokee to offer a plug-in hybrid vehicle (PHEV) variant.

Targeting an estimated 25 miles (40 km) of all-electric range and 57 MPGe
375 hp and 470 lb.-ft. of torque
Quadra Trac II 4x4 system with two-speed transfer case and 2.72:1 low-range gear ratio
47.4:1 crawl ratio
6,000-lbs (2,720 kg) 4xe max towing capability

Available in the Grand Cherokee Limited, Trailhawk, Overland, Summit and Summit Reserve, the 4xe propulsion system combines two electric motors, a 400-volt battery pack, 2.0-liter turbocharged, four-cylinder engine and TorqueFlite eight-speed automatic transmission for maximum efficiency and capability.

Overall, the 4xe system delivers 375 horsepower (280 kW) and 470 lb.-ft. (637 Nm) of torque. The Grand Cherokee 4xe, targeting an estimated 25 miles (40 km) of all-electric range, returns an estimated 57 MPGe and has an estimated total range of more than 440 miles (708 km).

The fuel-efficient 2.0-liter turbocharged I-4 engine is part of Stellantis’s Global Medium Engine family. The high-tech, direct-injection engine uses a twin-scroll, low-inertia turbocharger mounted directly to the cylinder head. Efficiency is enhanced via the use of electric power steering and an electrically driven air conditioning compressor, removing those loads from the engine.

The conventional alternator is replaced with a high-voltage, liquid-cooled motor generator unit. Connected to the engine crankshaft pulley via a belt, the motor generator spins the engine for nearly seamless, fuel-saving, start-stop operation and generates electricity for the battery pack.

A larger high-voltage motor generator is mounted in the transmission, replacing the torque converter. Two clutches manage power and torque from the e-motor and engine.

A clutch is mounted between the engine and the motor. When the system operates in electric-only mode this clutch is open so there is no mechanical linkage between the engine and the e-motor. When the clutch is closed, combined torque from the 2.0-liter engine and the e-motor flow through the automatic transmission. A variable clutch mounted behind the e-motor manages engagement with the transmission to improve drivability and efficiency.

The Jeep Grand Cherokee 4xe carries a 400-volt, 17-kWh EV battery. The battery units and controls mount underneath the vehicle, packaged under the floor and protected by a series of skid plates.

The battery pack system includes a dedicated heating and cooling circuit to keep the battery at its optimum temperature for best performance.

The Grand Cherokee’s 4xe system also includes an Integrated Dual Charging Module (ICDM) that combines a battery charger and a DC/DC converter in a single, compact unit and a Power Inverter Module (PIM) that is reduced in size. These are mounted under the body and protected with steel shields.

All high-voltage electronics are sealed and waterproof. The Trail Rated Jeep Grand Cherokee 4xe is capable of water fording up to 24 inches (61 cm).

4xe E Selec modes
With E Selec modes, the Jeep Grand Cherokee 4xe driver can tailor the hybrid powertrain to best suit each trip, whether it be commuting, off-roading or long-distance travel.

The driver selects the desired powertrain mode via buttons mounted on the instrument panel, to the left of the steering wheel:

Hybrid: Blends torque from the electric motor and gas engine. The powertrain will optimize battery and engine power to deliver the best combination of fuel efficiency and performance

Electric: Operates on zero-emission electric power only until the battery reaches the minimum charge or the driver requests more torque (such as wide-open throttle), which engages the engine

eSave: Prioritizes the engine, saving the battery charge for later use. The driver can also choose between Battery Save and Battery Charge during eSave via the Hybrid Electric Pages in the Uconnect 5 monitor

Regenerative braking is part of the 4xe system.

Full details: https://www.mikescarinfo.com/2022/10/grand-cherokee-4xe-plug-in-hybrid.html

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