The Anonymous Widower

Werner Enterprises Signs Letter Of Intent Planning To Secure 500 X15H Engines From Cummins

The title of this post, is the same as that of this press release from Cummins.

This is the first paragraph.

Werner Enterprises, a premier transportation and logistics provider, and Cummins Inc., a global power solutions provider, announced today Werner signed a letter of intent to purchase 500 Cummins’ 15-liter hydrogen internal combustion engines upon availability. The two companies announced earlier this year, Werner Enterprises plans to validate and integrate Cummins’15-liter natural gas and Cummins’ X15H hydrogen engines, both part of Cummins’ fuel agnostic platform, into their fleet.

More details of the X15H engine are given in this earlier press release, which is entitled Cummins Inc. Debuts 15-Litre Hydrogen Engine At ACT Expo, which has this first paragraph.

Today, Cummins Inc. debuted its 15-liter hydrogen engine at ACT Expo in Long Beach, California. This engine is built on Cummins’ new fuel-agnostic platform, where below the head gasket each fuel type’s engine has largely similar components, and above the head gasket, each has different components for different fuel types. This version, with expected full production in 2027, pairs with clean, zero-carbon hydrogen fuel, a key enabler of Cummins’ strategy to go further faster to help customers reduce greenhouse gas (GHG) emissions.

I certainly like the concept of a fuel-agnostic platform, where below the head gasket, everything is similar, and above the head gasket, there are appropriate components.

I wouldn’t be surprised to find that Rolls-Royce mtu and JCB have used a similar concept for their hydrogen internal combustion engines.

Cummins have also developed a 6.7 litre engine.

This is a paragraph from the press release.

Hydrogen internal combustion engines use zero-carbon fuel at a lower initial price of a fuel cell or battery electric vehicle with little modification to today’s vehicles. Accelerated market adoption of hydrogen engine powered vehicles is driven by the technology’s high technology maturity, low initial cost, extended vehicle range, fast fueling, powertrain installation commonality, and end-user familiarity.

I certainly feel it is the way to go technically.

Take London’s New Routemaster buses.

  • These buses are powered by a Cummins B-series engine, which has four cylinders and a capacity of 4.5 litres.
  • This engine powers large numbers of trucks and pick-ups.
  • For the UK, they are manufactured in Darlington.
  • It appears that Cummins 6.7 litre engine is a six cylinder B-series engine.

It would certainly be more affordable to change the cylinder heads of these buses and power them by hydrogen, than purchase a new fleet.

Cummins have an excellent tutorial on hydrogen internal combustion engines on their web site.

September 13, 2022 - Posted by | Hydrogen, Transport/Travel | , , , ,


  1. Now if TfL were going to IAA, the International Motor Show in Hannover that starts on 25th September maybe they could be encouraged to investigate the conversion of the Cummins ISB engines to hydrogen operation. I came across this link yesterday.
    KEYOU are a startup that are saying they can convert diesel engines to run on hydrogen. They’ve been in a collaboration with DEUTZ since 2019. They are presenting an 18 tonnes truck and a citybus converted to run on hydrogen.

    Comment by fammorris | September 15, 2022 | Reply

  2. It turns out that the Citybus used in the hydrogen engine demonstrator is produced by the Polish bus manufacturer Solaris and is part of their Urbis range of vehicles which currently cover diesel, BEV and FCEV powered variants.
    The basis of the demonstrator is the conventional internal combustion engine driveline but with the incorporation of a modified Cummins ISB 6.7 litre engine and a mild hybrid transmission.
    This suggests to me that Cummins themselves have collaborated with KEYOU to some degree. Could we see existing Alexander Dennis Enviro 400, Cummins engined buses in the UK a target for conversion?

    Comment by fammorris | September 15, 2022 | Reply

    • In their original press release, Cummins talk about converting a 6.7 litre engine to hydrogen.

      The Keyou technology looks promising. In my dealings with Cummins in the past, the company seems to go for the best technology and if they buy it in, that is not an issue. They also like and have been successful with modular engines.

      Comment by AnonW | September 15, 2022 | Reply

  3. […] then I’ve written Werner Enterprises Signs Letter Of Intent Planning To Secure 500 X15H Engines From Cummins, which describes the application of Cummins technology to convert heavy trucks to hydrogen […]

    Pingback by My First Ride In A Refurbished New Routemaster « The Anonymous Widower | September 20, 2022 | Reply

  4. […] Werner Enterprises Signs Letter Of Intent Planning To Secure 500 X15H Engines From Cummins, I said […]

    Pingback by Do Cummins And Stadler Have a Cunning Plan? « The Anonymous Widower | November 23, 2022 | Reply

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