Wrightbus StreetDeck Ultroliner Next-Gen To Get Cummins Power
The title of this post, is the same as that of this article on Route One.
These three paragraphs give more details.
Wrightbus will utilise Cummins power in its StreetDeck Ultroliner diesel double-decker for the first time in a next-generation variant of that model.
Those vehicles will be powered by the six-cylinder B6.7 engine rated at 250bhp or 300bhp, driving through the Voith DIWA.8 seven-speed automatic gearbox. Such an approach will further reduce emissions, and the new model will be Ultra-Low Emission Bus accredited by Zemo Partnership, the manufacturer says.
The existing StreetDeck Ultroliner, which is powered by the Daimler OM 934 four-cylinder engine, will continue to be available. The first Cummins-powered examples are to be supplied to Isle of Man operator Bus Vannin.
As a hydrogen version of the the Cummins six-cylinder B6.7 engine is available, at some point in the future, these buses will be convertible to zero-emission hydrogen power.
Wrightbus have already set up a division called New Power to do the conversion of existing buses, as I reported in Wrightbus Launches NewPower In Bicester.
It’s All Happening In Jamshedpur!
When I read this article on Hydrogen Fuel News, which is entitled Cummins And Tata Motors Ignite Change With H2 Internal Combustion Engines, I couldn’t resist using the jokey headline, which was inspired by the sub-heading.
The manufacturing has started in Jamshedpur, India at a new state-of-the-art facility
These two paragraphs give some more details.
The hydrogen internal combustion engines continuing to be produced at the facility are being integrated into Tata Motors trucks. This technology is being viewed as a promising zero- or low-carbon alternative to diesel power because of its powerful performance and substantial operating range.
Cummins’ B6.7H engines have notable similarities to current natural gas and diesel engines, particularly in terms of the components they contain. Moreover, they can fit in standard engine vehicles and require similar refueling times.
I first wrote about the Cummins B 6.7H engines in Cummins Shows Hydrogen Internal Combustion-Engined Concept Truck At IAA Transportation Exhibition, which I posted in September 2022.
I have these further thoughts.
Cummins B Series Engine
The Wikipedia entry for the Cummins B Series Engine, starts with these two paragraphs.
The Cummins B Series is a family of diesel engines produced by American manufacturer Cummins. In production since 1984, the B series engine family is intended for multiple applications on and off-highway, light-duty, and medium-duty. In the automotive industry, it is best known for its use in school buses, public service buses (most commonly the Dennis Dart and the Alexander Dennis Enviro400) in the United Kingdom, and Dodge/Ram pickup trucks.
Since its introduction, three generations of the B series engine have been produced, offered in both inline-four and inline-six configurations in multiple displacements.
Note.
- Cummins B Series is used in a wide variety of vehicles.
- It is available in both four and six cylinder versions.
But what Wikipedia doesn’t say, is that any Cummins’ customer will get the engine he wants for his application, even if it means creating a special version of the engine. Thirty years ago, I did a small data analysis job for Cummins in Darlington and on a tour of the works, I was given full details on how they treated customers. Cummins are not your average US company.
London’s Routemaster Buses
These buses are powered by a small four-cylinder version of the B-series engine, called a 4.5L ISB, which is described like this in Wikipedia.
The 4.5L ISB is essentially a four-cylinder, two-thirds version of the 6.7L ISB rated at 185 hp (138 kW), used in the New Routemaster, a series hybrid diesel-electric double-decker bus in London.
Note.
- Some diesel Range-Rovers, have more power, than these buses, but then they’re not hybrids.
- The engine also needs to be smaller, as it’s mounted under the back stairs.
Did Cummins’ special engine. allow the unique design of London’s Routemaster Buses?
Could London’s Routemaster Buses Be Converted To Hydrogen?
As an engineer and with my knowledge of Cummins’ design and manufacturing methods, I am fairly certain, if Cummins can manufacture six-cylinder versions of the B-Series engines, then four-cylinder hydrogen-powered engines are not far behind.
If London were to convert the thousand New Routemaster buses to hydrogen, there would be winners all round.
- Cummins would love the publicity and would probably benefit from increased sales of their hydrogen engines in vehicles like refuse trucks and small buses.
- It would surely give a route to convert older vehicles to hydrogen.
- The air in cities will improve.
But London has a problem, It is one of the few large cities in the world without readily-available hydrogen.
As this post illustrates and my Google searches show, India has a more advanced and scientifically-correct view on the usefulness of hydrogen.
Will Jaguar Land Rover Switch To Cummins’ Hydrogen Engines?
If Tata Motors make a success of hydrogen in India, it must make them think about adding hydrogen engines to Jaguar Land Rover products, specially as other manufacturers are getting serious about hydrogen.
Conclusion
Cummins will change the world for the better.
Cummins Shows Hydrogen Internal Combustion-Engined Concept Truck At IAA Transportation Exhibition
The title of this post, is the same as that of this article on Commercial Motor.
These are the first two paragraphs.
Cummins believes hydrogen internal combustion engines (H2-ICE) will be suitable for the 10- to 26-tonne GVW range, and showed a concept vehicle at the IAA Transportation exhibition.
The truck, which is based on a Mercedes-Benz Atego 4×2, is fitted with Cummins’ new 6.7-litre B6.7H engine. It is rated at 290hp, has a peak torque of 1,200Nm, and a range of up to 500km.
Alison Trueblood, Cummins executive director – on-highway business Europe, is extensively quoted in the article and it is worth reading what she says.
I believe that by providing a hydrogen infrastructure and converting trucks to hydrogen, by using similar techniques to Cummins could be a quick and effective way to improve air qualities in urban areas.
The Anonymous Widower 