News 2022

Allison Transmission has unveiled the eGen Force electric tank motor

Allison Transmission has unveiled the eGen Force electric hybrid propulsion system for tracked combat vehicles. Designed for 50-ton tracked vehicles, the eGen Force meets the requirements of the US Army Select Manned Combat Vehicle (OMFV) program. eGen Force can also be scaled up to 70-ton tracked vehicles, making it capable of meeting future main battle tank requirements.

This product is more than a transmission, it is a power distribution system with an electric motor and an inverter to power a flatbed vehicle and parallel hybrid operation. This allows you to remain mobile with the engine off to reduce enemy detection - both acoustic and thermal - ideally increasing the survivability of soldiers.
— Dana Pittard, Vice President of Defense Programs, Allison Transmission

Allison has combined its years of experience with both combat vehicles and electric hybrid propulsion to develop the new eGen Force system. Before developing the eGen Force, Allison used the customer's input by conducting a comprehensive trade study based on over 70 years of cross-drive development experience to select the optimal architecture for the electric hybrid combat vehicle for optimization purposes. efficiency, productivity, reliability and manufacturability.

Engine power 850 kW / 1140 hp
Width 1575 mm
Length 1091 mm
Height 955 mm
Weight 2000 kg
Vehicle weight 36-55 tons
Gear 8 forward, 3 reverse
Mechanical ratio 11.9:1
Power take-off options Optional mechanical or electrical
Onboard vehicle power 220 kW at 600 V DC
Electronic Machine System 600V
Wired Control Yes

To reduce development risk, Allison has combined legacy parts from its X1100-3B1 transmission used in the Abrams main battle tank with new components that follow proven gear design strategies. The High Efficiency Range Package uses eight forward and three reverse gears to provide efficient 12:1 ratio coverage and generates 220 kilowatts of electricity.

We are very pleased with the testing and performance verification of the subsystem. eGen Force has now begun dyno and engine bench testing, followed by vehicle testing in early 2023. System and vehicle level integration expertise is Allison's core competency and hallmark, and we are proud to deliver these next-generation capabilities in partnership with our defense customers.
— Michael York, Executive Director of Defense Engineering, Allison Transmission

Allison is partnering with American Rheinmetall Vehicles (ARV) to integrate the eGen Force into its OMFV offering. The ARV provides best-in-class mobility and unrivaled power in a highly agile and modern chassis that will change the way soldiers and squads perform their missions.
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