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2021 Jeep Wrangler 4XE Hybrid Rubicon - Ultimate In-Depth Look in 4K

MikesCarInfo

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Published on May 01, 2021
Wrangler 4xe is first and foremost a Jeep Wrangler with Trail Rated running gear: solid front and rear axles, full-time 4x4 two-speed transfer case, fully articulating suspension and 30 inches of water fording capability.

Full test-drive experience: https://youtu.be/qyHgLnkCsNg

Thank you to:
Vann Underwood Chrysler Jeep Dodge RAM
501 South Madison Street
Whiteville, NC 28472
(888) 310-0916
www.vannunderwood.com

Wrangler 4xe’s advanced turbocharged 2.0-liter four-cylinder engine, two electric motors and robust TorqueFlite eight-speed automatic transmission combine to deliver an estimated 50 MPGe
400-volt, 17 kWh, 96-cell battery pack mounts beneath second-row seat to protect it from outside elements and to preserve the interior space.
The Wrangler 4xe’s plug-in hybrid powertrain is capable of up to 25 miles of nearly silent, zero-emission, electric-only propulsion.

Key elements of the Wrangler 4xe powertrain include 375 horsepower (280 kW), 470 lb.-ft. (637 N•m) of torque and an estimated 50 MPGe from the following components:
2.0-liter turbocharged I-4 Engine-mounted motor generator unit Transmission-mounted motor generator unit integrated into eight-speed automatic transmission (ZF 8P75PH)
400-volt, 17-kWh, 96-cell lithium-ion, nickel manganese cobalt battery pack

The 2.0-liter turbocharged I-4 engine is part of FCA’s Global Medium Engine family. The high-tech, direct-injection engine uses a twin-scroll, low-inertia turbocharger mounted directly to the cylinder head, along with a dedicated cooling circuit for the turbocharger, intake air and throttle body for exceptional responsiveness, performance and fuel efficiency.

A high-voltage, liquid-cooled motor generator unit mounts at the front of the engine, replacing the conventional alternator. A robust belt connects the motor generator to the engine crankshaft pulley. The motor generator spins the engine for nearly seamless, fuel-saving, start-stop operation and generates electricity for the battery pack. The Wrangler 4xe does not use a conventional 12-volt starter motor. The Wrangler 4xe is equipped with a 12-volt battery to run accessories.

The second high-voltage motor generator is mounted at the front of the transmission case, replacing the conventional torque converter of an automatic transmission.
Two clutches work to manage power and torque from the e-motor and engine. A binary clutch (on/off) is mounted between the engine and the motor. When this clutch is open there is no mechanical linkage between the engine and the e-motor, which enables it to propel the Wrangler 4xe in electric-only mode.

When the binary clutch is closed, torque from the 2.0-liter engine and the e-motor flow combine through the automatic transmission. A variable clutch mounted behind the e-motor manages engagement with the transmission to improve drivability and efficiency.

The Jeep Wrangler 4xe’s 400-volt, 17-kWh, 96-cell lithium-ion battery pack uses nickel manganese cobalt (NMC) graphite chemistry. The pack and controls mount underneath the second-row seat, where it is protected from outside elements. The Wrangler 4xe’s second-row seat is redesigned, allowing the bottom cushion to flip forward for access to the battery.

Encased in an aluminum housing, the pack is fitted with a dedicated heating and cooling circuit to keep the battery at its optimum temperature for best performance. The temperature control circuit includes a dedicated heater unit and a chiller that uses the Wrangler air-conditioning refrigerant to reduce coolant temperature when needed.
All high-voltage electronics, including the wiring between the battery pack and the electric motors, are sealed and waterproof.

The Wrangler 4xe hybrid powertrain has three modes of operation, known as E Selec. Regardless of the mode selected, the Wrangler 4xe operates as hybrid once the battery nears its minimum state of charge.

-Hybrid: The default mode blends torque from the 2.0-liter engine and electric motor. In this mode, the powertrain will use battery power first, then add in propulsion from the 2.0-liter turbocharged I-4 when the battery reaches minimum state of charge

-Electric: The powertrain 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 2.0-liter engine

-eSave: Prioritizes propulsion from the 2.0-liter engine, saving the battery charge for later use, such as EV off-roading or urban areas where internal combustion propulsion is restricted. The driver can also choose between Battery Save and Battery Charge during eSave via the Hybrid Electric Pages in the Uconnect monitor.

Full Specs and more details: https://www.mikescarinfo.com/2021/05/jeep-wrangler-4xe-hybrid.html

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