Cummins Ethos E85 Turbo Four-Cylinder Engine Unveiled

Jason Siu
by Jason Siu

Cummins is looking to the future with a turbocharged four-cylinder E85 engine.

Yesterday, the company unveiled its new Ethos 2.8-liter turbocharged four-cylinder engine that runs on E85 and provides 250 hp and 450 lb-ft of torque. The engine is being developed with partial funding from the California Energy Commission in hopes of producing a low-carbon, medium-duty commercial engine.

SEE ALSO: 2016 Toyota Tundra to Come With Cummins Diesel

According to Cummins, the engine has specific tuning to take advantage to take advantage of the unique properties found in E85 and is projected to cut CO2 emissions by as much as 50 to 58 percent on corn-based ethanol and as much as 75 to 80 percent with cellulosic-based ethanol. The company is currently testing the powerplant with an Allison 2000-series transmission with auto start-stop to further enhance fuel economy.

Still currently in the testing phase, no timeline for production or availability has been announced.

Jason Siu
Jason Siu

Jason Siu began his career in automotive journalism in 2003 with Modified Magazine, a property previously held by VerticalScope. As the West Coast Editor, he played a pivotal role while also extending his expertise to Modified Luxury & Exotics and Modified Mustangs. Beyond his editorial work, Jason authored two notable Cartech books. His tenure at AutoGuide.com saw him immersed in the daily news cycle, yet his passion for hands-on evaluation led him to focus on testing and product reviews, offering well-rounded recommendations to AutoGuide readers. Currently, as the Content Director for VerticalScope, Jason spearheads the content strategy for an array of online publications, a role that has him at the helm of ensuring quality and consistency across the board.

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  • Kell490 Kell490 on Sep 11, 2015

    E85 around here is no where near $1.69 must be in a state where it's subsidized or not taxed maybe mid-west corn state. What I was saying is that E85 combined with hybrid cars could make a difference not sure why you think there isn't enough copper when all models of cars being offered are already offering a hybrid version now. Auto makers have already said all cars will be hybrid by 2025. Also my friend said the Chevy dealer told him he has to change his oil more often if he runs e-85 which is strange because I thought it would be less often it runs so clean. I know e85 is a clean high octane fuel runs cooler until engines are built to take advantages of those things the current low compression built gasoline engine is not very economical to just switch everyone over to e-85. Electric vehicles are taking hold I see tesla cars all over the place now. Coal plants are on the way out in the US I work for a electric utility they are not investing any more money in the 2 coal plants they have now. With the future of natural gas cost being low much easier to add more solar,and more gas fired plants. Plus with Tesla battery wall being offered for homes with solar charging cars at home is probably the path we are going to see.

    • Fletch Fletch on Sep 14, 2015

      Hi Kell490, Actually, last Friday it was $1.59/gal and there are no state subsidies on E85 even in corn states that I am aware of. There have been programs in the past to make new blender pumps cheaper from states, but that would have a negligible effect. Since the money would go to products and banks in that state rather than Arabs and transnational oil company's Swiss bank accounts, any subsidy on the pumps are paid back many fold. The cost per mile is the same and ethanol is not subsidized. Gasoline has subsidies that if included in its price would be more than double. Hybrids are not that great, my 2015 chevy is better in mpg than my 2011 hybrid. Just having start/stop capability would be affordable and capture most effeciencies hybrids have. In 2011 there were two chevy hybrid models, mine was the cheaper one because I needed to seat six people at times. Its list was for $36000(FYI the list went to around $41000 before they quit making it) The salesman told me at the time that the same pickup not a hybrid would be $3000 cheaper. I computed with the EPA mileage that I would have to own it with gas prices at the time to 100000 miles. It is at 90000 now. I leased a 2011 Lincoln hybrid too, it had a small trunk and not that great of mileage and my Chevy pickup lost storage under back seat because of the batteries as well. The amount of copper to build the electric infrastructure to supply power to cars would be huge along with the cars themselves. Copper prices would have to soar. Solar does not shine at night when people are home from work to charge their cars. Solar is currently .004 of US electric supply. It uses even more rare silver in big quantities. E85 from what I see removes calcium from oil which is a detergent added to oil for the soot gasoline and other nasties (i.e.BTX) added to our fuel. E100 would not need detergent as no soot would be generated. In fact and ethanol powered car would probably remove soot from the air it burned. Natural gas adds carbon to our ecosystem where ethanol recycles carbon, even removing carbon. Watch the movie Pump, the electric trolly system at the turn of the century is absolutely amazing, we went backwards and it had nothing to do with economics. You can not believe how many small towns everywhere had them. Ethanol is covered in the movie as well. The future close to perfect fuel is right under our noses, but big oil wants our future to be toxic tar sands and fracking. This Cummins Ethos engine makes it a no brainer. Thanks for the discussion, Fletch

  • Egg-meister Egg-meister on Aug 24, 2022

    Alright who things i can cram it in my 92 Honda Accord B^)

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