Components and Production Systems
March 24, 2018 – The new generations of the Ram 1500 and Jeep Wrangler will be available with a new feature:
eTorque, FCA’s mild hybrid system.
The eTorque mild hybrid system replaces a conventional engine’s alternator with a belt-driven
motor generator that works with a 48-volt battery pack. This technology enables quick and
seamless start/stop function, short-duration torque addition to the engine crankshaft in certain
driving situations, and brake-energy regeneration, which improves responsiveness and
efficiency. With the engine running, eTorque’s motor generator unit feeds 48-volt current to a
430 watt-hour lithium-ion Nickel Manganese Cobalt (NMC)-Graphite battery. The battery pack
includes a 3-kilowatt DC-to- DC converter to maintain the battery’s state of charge and convert
48 volts to 12 volts to power accessories and charge the vehicle’s 12-volt lead-acid battery. The
eTorque motor generator is slightly different between the 3.6-liter Pentastar V-6 and 5.7-liter
HEMI V-8 applications. The Pentastar eTorque unit is liquid cooled and mounted on the front of
the engine. The HEMI V-8 eTorque unit is air cooled and mounted top-side.