Allison Develops Stop-Start for Medium-Duty Transmission
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.
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.
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