Allison Transmission Unveils Stop-start Tech for Ultra-low Carbon Powertrain

Allison Transmission Holdings Inc. (NYSE: ALSN) has announced a new integrated stop-start technology in conjunction with Project ETHOS, an ultra-low carbon powertrain program created by Cummins to demonstrate the potential of alternative fuels for carbon dioxide (CO2) reductions in medium-duty commercial vehicles.

In partnership with the California Energy Commission, Cummins developed an engine that uses E85 (a high-octane blend of ethanol and gasoline) as a fuel to reduce greenhouse gas (GHG) emissions significantly.

The Cummins ETHOS 2.8L engine is coupled with an Allison 2000 Series™ fully automatic transmission which utilizes integrated stop-start for further emissions reduction, as well as increased fuel economy.

Integrated stop-start shuts the engine down when the operator presses the brake pedal and the vehicle comes to a complete stop.

The transmission remains in drive during this time and locks the output to help prevent vehicle rollback by using an electric pump. As the driver’s foot is lifted from the brake, the system automatically starts the engine to allow acceleration.

The transmission is equipped with specific hydraulic circulation features to ensure smooth operation during stop-start driving.

Additionally, all Allison Automatics provide Continuous Power Technology™ with seamless full-power shifts to put engine power to the drive wheels in the most efficient way.

The result, according to the company, “is faster acceleration and higher average road speed for quicker route times and greater productivity.”

Category: Engines & Drivetrains, General Update, Green