Who Have Bought Wrightbus Ultroliners With Cummins Engines?
In their web page, which describes the Wrightbus Ultroliner EU6, this paragraph describes the powering options.
The StreetDeck Ultroliner EU6 is available with two ultra low emission efficient diesel engine choices: the new Cummins 6.7 litre 6 cylinder and the current Mercedes 5.1 litre 4 cylinder engine. Our StreetDeck EU6 Ultroliner and its engine choices remains the UK’s favourite. All these buses can be repowered at mid-life to zero-emission BEV technology with NewPower.
But I believe that there is another repowering option – The Cummins engine can be converted to hydrogen to create a zero-emission bus, with an internal combustion engine.
Cummins Accelerates Work On Hydrogen-Fueled Internal Combustion Engines
Cummins Fuel-Agnostic X Series Platform shows a Cummins video about their fuel agnostic technology.
In Do Cummins And Stadler Have a Cunning Plan? I point out how Stadler could be making Class 99 locomotives with Cummins engines, that could be designed for conversion to hydrogen.
These engines are also probably made in Darlington
What Did Google AI Reply To The Question In The Title Of This Post?
Several transport operators have purchased Wrightbus StreetDeck Ultroliners equipped with Cummins engines. This highly efficient, ultra-low-emission diesel combination has been specifically chosen by operators where battery-electric vehicles are not viable for certain long-distance or high-mileage routes.
The known buyers include:
Bus Vannin: The first operator to order the next-generation Ultroliners with six-cylinder Cummins B6.7 engines. They placed an order for six vehicles which entered service on the Isle of Man, including two carrying special heritage liveries.
Nottingham City Transport (NCT): Ordered six StreetDeck Ultroliners. They are powered by the Cummins B6.7 engine paired with Voith gearboxes, specifically for their long-distance Pathfinder 26 route.
Go North East: Listed as an early operator to order the Wright StreetDeck featuring the Cummins engine.
Metroline Manchester: Acquired a large batch of 135 facelift StreetDeck Ultroliners (ordered via Transport for Greater Manchester) for rollout on the Bee Network.
Out of fairness, I asked Google AI,”Who have bought Wrightbus Ultroliners with Mercedes engines” and received this reply.
The vast majority of Wrightbus “Ultroliner” double-deckers feature Cummins engines.
Nottingham City Transport To Upgrade Pathfinder Route with Order For Brand New Wrightbus Double Decks
I found this press release on Nottingham City Transport’s web site, which is an interesting read.
These are the first two paragraphs.
UK Bus Operator of the Year, Nottingham City Transport has partnered with pioneering manufacturer Wrightbus to upgrade its long distance Pathfinder bus service between Nottingham, Burton Joyce, Lowdham and Southwell.
Six brand new ultra-low emission diesel powered double decks will soon start to be built by Wrightbus at their factory in Northern Ireland and will start carrying passengers in late autumn this year.
David Astill of NCT and Jean-Marc Gales of Wrightbus, then explain the industry-leading technology behind the buses. It results in an 80 % emission reduction compared to the previous 2014 buses.
Jean-Marc Gales finished with this.
Our blended approach to responsible technology, which includes battery electric, hydrogen fuel cell and the cleanest technologies, ensures our customers can continue to decarbonise while maintaining financially viable operations.
It appears to me, that this is the sensible way to go, as the operator can always choose what is best for their network.
Nottingham City Transport’s Ultroliners
These are some pictures I took of the buses on my trip to Nottingham.
Unfortunately, I didn’t have enough time for a ride.
Hydrogen And The Isle Of Man
I asked Google AI, the title of this section and received this answer.
On the Isle of Man, hydrogen is viewed as an unviable option for domestic heating due to high production costs and economies of scale.
However, the island’s government and local energy providers see potential for the fuel in heavy transport, maritime shipping, and achieving long-term energy independence.
Policy and Energy Strategy
Heating and Homes: Extensive energy analysis by the Isle of Man Government has concluded that hydrogen is not economically feasible for home heating. High costs and infrastructure limitations favor alternatives like heat pumps, which boast much higher efficiencies for everyday domestic use.
Energy Independence: While domestic heating is a poor fit, producing green hydrogen using the island’s future offshore wind or tidal renewable resources is occasionally discussed as a way to achieve total energy security and independence.
Network Readiness: The existing high-pressure pipeline network that transports natural gas to the island is not compatible with 100% hydrogen, though some smaller localized parts of the distribution grid could potentially be adapted.
Proposed Applications & Industry
The Steam Railway: The Isle of Man Steam Railway has faced proposals from private inventors to convert historic heritage locomotives to run on green hydrogen.
Maritime Shipping: Because the Isle of Man is a prominent maritime hub, green hydrogen production could theoretically serve as a valuable refueling point for future hydrogen-powered commercial shipping fleets.
Utility Diversification: Isle of Man Energy (formerly Manx Gas) has highlighted green hydrogen and biogas as part of their long-term corporate diversification plans away from natural gas.
My further thoughts on hydrogen and the Isle of Man
- There may also be some difficult-to-decarbonise businesses on the Island.
- The Isle of Man is also a holiday island and getting rid of diesel commercial vehicles could be advantageous.
- Will Centrica setup an electrolyser on the island and do a bit of bunkering?
It appears to be an island with great potential for hydrogen.
Conclusion
My final thoughts.
- I believe that Wrightbus have designed a diesel bus, that can replace existing diesel buses, without changing the buses to either battery or hydrogen operation.
- But once the operator has made provision for the electricity or hydrogen for the buses, then the buses can be converted to zero carbon.
- My project management knowledge would say, that there is an optimum rate at which new technology buses can be introduced.
It looks a good plan.
The Prototype Affordable Zero-Carbon Small Car Has Just Been Designed
The Wrightbus Ultroliner EU6, is their latest diesel bus.
The product page has this sub-heading.
A Choice Of The
UK’s Most Efficient
Diesel Buses
Two paragraphs give full details of the bus.
The StreetDeck Ultroliner EU6 is available with two ultra low emission efficient diesel engine choices: the new Cummins 6.7 litre 6 cylinder and the current Mercedes 5.1 litre 4 cylinder engine. Our StreetDeck EU6 Ultroliner and its engine choices remains the UK’s favourite. All these buses can be repowered at mid-life to zero-emission BEV technology with NewPower.
The new Cummins ISB6.7 litre six-cylinder diesel engine, married with the latest Voith DIWA.8 NXT 7-speed transmission. Two power options are available: 250Hp / 187Kw, 1000Nm and 300Hp / 224Kw, 1200Nm. With a large 245L fuel tank, this StreetDeck is ready to go the distance, wherever the journey takes it. Its MH3 technology helps lower fuel consumption during frequent stops on busy roads and improves the overall footprint and ride quality. Where ultra clean diesel buses are seen as the only option at this time, there is no better bus than the low emission StreetDeck Ultroliner range.
So you get a modern bus, that can be converted to zero-carbon at an appropriate time.
But nothing is said about conversion to hydrogen, which I believe is the ideal fuel for a large vehicle.
So I asked Google AI, if a Wrightbus Ultroliner can be converted to hydrogen-power, and received this answer.
Yes, the Wrightbus StreetDeck Ultroliner EU6 can be converted to hydrogen power. Wrightbus has engineered the diesel StreetDeck Ultroliner platform to be forward-looking, allowing operators to retrofit these vehicles mid-life with Cummins hydrogen internal combustion engines.
Here are the key details regarding this conversion and technology:
Adaptable Design: The StreetDeck Ultroliner was specifically designed to bridge the gap between traditional diesel and zero-emission options, making it possible to switch to hydrogen or battery-electric powertrains later in the vehicle’s life.
Hydrogen Internal Combustion: Instead of a fuel cell, this retrofit converts the diesel engine to run on hydrogen gas, providing a cost-effective route to zero emissions for existing operators.
Shared Platform: The diesel Ultroliner shares a similar “feel and features” with the purpose-built zero-emission Hydroliner (Hydrogen Fuel Cell) and Electroliner (Battery) buses, making the structural integration of alternative systems more straightforward.
Alternative Conversion Options: Third-party companies, such as Equipmake, specialize in “repowering” Wrightbus StreetDeck models to zero-emission, offering to convert diesel vehicles to electric in a short time frame, although the primary official pathway mentioned by Wrightbus for the Ultroliner is hydrogen-combustion.
The Wrightbus StreetDeck Hydroliner FCEV (Fuel Cell Electric Vehicle) was the world’s first production hydrogen double-decker bus, providing proven technology in cities like Aberdeen, Belfast, and London.
Note.
- The original Cummins diesel engine is converted to hydrogen fuel.
- In Cummins Fuel-Agnostic X Series Platform, I show a Cummins video, which explains their philosophy of convertible engines with trucks.
- Conversion to natural gas is also possible.
- It would appear that the Cummins ISB in the Ultroliner has a hydrogen version, that can be created by changing the fuel system and the cylinder head.
I wouldn’t be surprised, if Cummins told me, that they could make a convertible diesel, that could power a small hatchback.
Out of curiosity, I asked Google AI, “What is the power of a diesel Mini” and received this answer.
The power of a diesel Mini depends on the model (One D, Cooper D, or Cooper SD) and the generation, with power outputs ranging from approximately 88 bhp to 170 bhp. Diesel Minis are known for high torque and excellent fuel economy rather than just top-end speed.
Here is a breakdown of the power figures:
1. MINI Cooper SD (2.0L Diesel)
Power: Typically 143 bhp (105 kW) to 170 bhp (125 kW).
Torque: 305 Nm to 360 Nm (225–265 lb-ft).
Performance: The 170 hp 2.0-litre diesel in the 2015-2018 range is often called a “diesel hot hatch,” featuring a 0-62 mph time of around 7.3 seconds.
2. MINI Cooper D (1.5L – 1.6L Diesel)
Power: Usually between 110 bhp and 116 bhp.
Torque: 270 Nm (199 lb-ft).
Performance: Offers a good balance of fuel economy and punch, with a 0-60 mph time of around 9.4–9.7 seconds.
3. MINI One D (1.4L – 1.5L Diesel)
Power: Approximately 75 bhp to 95 bhp.
Performance: Designed for maximum fuel efficiency and lower tax bands, with lower power output compared to the Cooper models.
Key Takeaways:
Most Powerful: The 2.0L Cooper SD is the most powerful, often producing up to 170 hp.
Torque: Diesel Minis often have high torque at low revs (around 1750rpm), making them quick for overtaking and city driving.
Generation Differences: Older R56 models (2007-2014) often have 1.6L diesel engines, while newer F56 models (2014-2024) use 1.5L or 2.0L engines.
Reliability: These engines are BMW-sourced (N47 or B37/B47) and generally considered reliable.
As there are large numbers of companies around the world, who claim they can convert cars and other vehicles, and engines to hydrogen power.
Out of curiosity, I asked Google AI, “Has Anybody Built A Hydrogen-Powered Mini” and received this answer.
Yes, BMW built a hydrogen-powered MINI Cooper prototype in 2001.
Unveiled at the Frankfurt Motor Show in September 2001, this car was not a fuel-cell vehicle, but rather a hydrogen-burning internal combustion engine car.
Key details about the 2001 MINI Cooper Hydrogen:
Engine: It used a modified version of the MINI’s 1.6-liter four-cylinder engine designed to run on hydrogen.
Technology: It was unique because it used cryogenic liquid hydrogen and injected it while super-cooled, which increased engine efficiency and performance, setting it apart from other hydrogen experiments at the time.
Packaging: Engineers managed to place the contoured hydrogen tank under the rear seats, meaning it did not sacrifice cabin or cargo space compared to a standard Mini.
Legacy: While not mass-produced, it was a significant prototype in BMW’s long-standing research into hydrogen technology.
Other Hydrogen “Mini” Projects:
Mini Mirai RC Car: Toyota and Tamiya built a 1/10th scale hydrogen-fuelled remote-controlled car in 2021. It used a small fuel cell and hydrogen canisters to run for twice the duration of a conventional battery-powered RC car.
Small Engines: Israeli firm Aquarius Engines has developed a 10kg hydrogen-powered engine intended for use as a range extender, which has passed independent testing.
Conclusion
I believe that in the next few years, a serious manufacturer will release a diesel car that can be converted to hydrogen power.
Eventually, this will mean that government can withdraw fossil fuels for road vehicles.
Centrica Secures Investment Stake In Gasrec Helping Boost UK Bio-LNG Ambitions
The title of this post, is the same as that of this press release from Centrica.
This is the sub-heading.
Centrica has secured a minority stake in Gasrec, the UK’s largest dual provider of bio-LNG (bio-Liquified Natural Gas) and bio-CNG (bio-Compressed Natural Gas) to the road transport sector,
These first two paragraphs give more details.
Gasrec says the investment will drive the next phase of its infrastructure ambitions, with plans to open a UK wide network of open-access refuelling stations supplying renewable bio-LNG for the decarbonisation of heavy goods vehicles.
Centrica is taking a 16% stake and becomes one of three major shareholders in Gasrec, alongside global integrated energy company bp and private family office 44 North.
I have some thoughts.
Does Running A Truck On bio-LNG or bio-CNG. Reduce Carbon Emissions?
This paragraph from the press release, gives the thoughts of Chris O’Shea, who is Group Chief Executive, Centrica.
Chris O’Shea, Group Chief Executive, Centrica plc, said: “Demand for bio-LNG for transport is growing fast as more HGV operators make the switch – drawn by a clean, ready-to-use fuel which slashes CO2 emissions by up to 85 per cent in comparison to diesel*. This investment in Gasrec enhances our collaboration with the leading company in the sector, and puts us in a strong position to energise a vital sector of the industry on its journey to net zero.”
As Centrica is a public company, with shareholders, who would take a dim view of Mr. O’Shea telling porkies, I suspect we can assume that the following is true.
Drawn by a clean, ready-to-use fuel which slashes CO2 emissions by up to 85 per cent in comparison to diesel.
The asterisk in the full quote, refers to this note.
Low Carbon Vehicle Partnership, Innovate UK and Office for Low Emission Vehicles, Low Emission Freight & Logistics Trial (LEFT), Key Findings, November 2020. Using specific feedstocks CO2 reductions of 200% are achievable.
Centrica could be being conservative with their claims.
Decarbonising Buses, Locomotives And Trucks
Despite what Elon Musk, would have us believe, electric trucks will not dominate the future of freight transport.
An electric truck would be the vehicle equivalent of asking Usain Bolt to run a hundred metres with a large refrigerator on his back.
Trucks are going to need a fuel without a weight penalty and with a long range.
I asked Google for information about Cummins diesel, natural gas and hydrogen engines and received this AI Overview.
Cummins offers engines powered by diesel, natural gas, and hydrogen. While diesel engines are well-established, Cummins is also developing both natural gas and hydrogen engines, particularly focusing on hydrogen as a pathway to zero-carbon solutions for various applications. Cummins utilizes a fuel-agnostic platform, meaning a common base engine can be adapted for different fuel types, including diesel, natural gas, and hydrogen.
Recently, GB Railfreight purchased thirty Class 99 locomotives from Stadler.
- They can use electrification, where it exists.
- Where electrification doesn’t exist, they can use an onboard Cummins diesel engine, which is built in Darlington.
- In electric-mode, they have 6.2 MW of power, and are the most powerful locomotives ever to run on UK railways.
- In diesel-mode, they have 1.8 MW of power, which is more than enough to haul a large container train in and out of Felixstowe.
I had thought that at some future date, Cummins would convert these locomotives to electro-hydrogen.
But now that Gasrec is providing bio-LNG and bio-CNG, GB Railfreight, have the option of converting both hydrogen and biomethane.
Similar logic can be applied to Wrightbus’s Streetdeck Ultroliner, one version of which is fitted with a Cummins engine, that can be converted to electric, hydrogen or natural gas, which of course includes biomethane. This page on the Wrightbus web site describes the bus.
Wrightbus are also going back into coach manufacture, as I wrote about in Wrightbus Goes Back To The Future As It Relaunches The Contour Coach. As with the Streetdeck Ultroliner, Cummins seem to be providing one of the power units.
It seems to me, that the zero- and low-carbon revolution in transport will generate a need for the availability of biomethane, hydrogen and natural gas fuel for transport all over the country.
Gasrec with around twenty biomethane fuelling points around the country, seem well-placed to supply the biomethane in bio-LNG or bio-CNG form.
Could Gasrec Deliver Hydrogen?
Various bus companies in the UK, have had difficulty getting the fuel for their hydrogen buses.
I believe that delivering hydrogen would be very similar to delivering LNG and if Gasrec can deliver LNG successfully and safely, they probably have the technology to do the same for hydrogen.
Centrica Seem To Be Assembling An Interesting Consortium
These are some deals, that I have reported on this blog, that involve Centrica.
- Centrica, along with Hyundai, Kia, Siemens and others have backed Hull-based hydrogen start-up; HiiROC, who can produce affordable hydrogen from any hydrocarbon gas including natural gas, where it is needed.
- Centrica have invested in Sizewell C. Will they be using their share of the electricity to make affordable pink hydrogen using HiiROC?
- In Centrica And Ryze Agree To Develop Hydrogen Pathway, I talked about how Centrica and Ryse were aiming to bring hydrogen to the masses.
- In Recurrent Energy’s Middle Road Project Sold To Centrica, I talked about a Centrica investment in solar power.
- In Aberdeen’s Exceed Secures Centrica Rough Contract, I talked about how Centrica were redeveloping the Rough gas storage site for hydrogen.
- In Lhyfe And Centrica To Develop Offshore Renewable Green Hydrogen In The UK, I talked about developing offshore hydrogen.
- In Centrica Announces Hydrogen Ready Combined Heat And Power Partnership With 2G, the title says it all.
- In Centrica Signs UK Biomethane Agreement With Yorkshire Water And SGN Commercial Services, Centrica appear to be sourcing biomethane from Yorkshire Water.
- In Centrica Invests In Renewable Energy Storage Capabilities To Boost UK’s Energy Security And Accelerate Transition To Net Zero, I talk about Centrica, Goldman Sachs and others, investment in liquid-air energy storage company; Highview Power.
- In British Gas Owner Mulls Mini-Nuke Challenge To Rolls-Royce, I talk about rumours that Centrica might invest in SMRs.
Note.
- A lot of these deals are are about hydrogen production.
- Some of these deals are about biomethane production.
- None of these deals talk about getting hydrogen and biomethane to customers.
It appears to me, that Gasrec have a model that works to get hydrogen, methane and biomethane from production and storage to the end customers.
Developing A Rural Hydrogen Network
In Developing A Rural Hydrogen Network, I talked about supplying all those millions of off-gas grid properties with hydrogen for heating, agricultural and industrial purposes, in the countryside of the UK.
Gasrec have the technology to decarbonise the countryside.
Conclusion
Gasrec would appear to be a very useful partner for Centrica.
The Anonymous Widower 