Green Fleet

Allison Develops Stop-Start for Medium-Duty Transmission

July 21, 2014

Cummins’ new Ethos 2.8L E85-powered I-4. Photo courtesy of Cummins.
Cummins’ new Ethos 2.8L E85-powered I-4. Photo courtesy of Cummins.

Allison Transmission has developed stop-start technology with a transmission that could be paired with Cummins' 2.8L ETHOS E-85 medium-duty truck engine, the company announced.

An Allison 2550 automatic transmission using stop-start technology to further reduce greenhouse gas emissions would be paired with the E-85 engine.

The stop-start technology would shut down the engine when the operator presses the brake pedal and the vehicle comes to a complete stop. The transmission remains in drive and locks the output, using an electric pump to keep the vehicles from rolling backward.

Cummins has been testing the ETHOS engine for nearly three years and has accumulated 1,500 hours on the engine with a more than 50-percent reduction in emissions in that time period.

Allison has not committed to bringing the pairing to market, and continues to test and demonstrate it. The latest demo came on public roads in California in June and July.

Comment On This Story

Comment: (Maximum 10000 characters)  
Leave this field empty:
* Please note that every comment is moderated.


Public Fleet Tracking And Telematics

Amin Amini from Verizon will answer your questions and challenges

View All

Recent Topics

Here's an EV question or two: How are you paying for the charging station? I have some interested parties in my city, but not an...

View Topic

Has anyone played with the idea of leasing vehicles' vs. purchasing. And are there any benefits to it. I know Enterprise offers a...

View Topic

Fleet Documents

1025 Fleet Documents (and counting) to Download!

Sponsored by

XL Hybrids is a developer and provider of hybrid-electric solutions for the commercial vehicle market.

Read more

Alternative Fuel Locator

Use the Alternative Fuel Locator to find stations near you.

Launch Alternative Fuel Locator