Hydrogen-fueled combustion engines have slowly emerged in the mobility world, designed to run everything from race cars to pleasure boats. The latest hydrogen ICE to rumble to life was born with a special mission at its core: claim an all-out land speed record or two for the emerging hydrogen-combustion space. A team of students at the University of Bath have successfully gotten their first house-built hydrogen-burning prototype engine up and running and are moving forward with testing.
The Bath Hydrogen engineering team came up with the idea of a hydrogen combustion-engine world record tour in furtherance of the greater university's pioneering efforts in the hydrogen space. The University has set out to become a leader in research capacity, facilities and expertise in the production, storage, distribution and end use of hydrogen and carriers like ammonia.
Last month, the University announced plans to join the HyFIVE hydrogen consortium with the aim of exploring the use of hydrogen as a zero-emissions aviation fuel in the UK. The consortium will work to create a world-class hydrogen fueling system and supply chain for supporting zero-emissions aviation by the 2030s.
Back on the ground, the hydrogen speed record team recently switched on their hydrogen-converted single-cylinder combustion engine for the first time. While they have their sights on bolder records, the feat is said to be a world first for undergraduates developing and running a hydrogen ICE.
The newly cleaned engine started off as a single-cylinder generator engine supplied by sponsor Vanguard (Briggs & Stratton) and selected for its simplicity and adaptability. The team reengineered the engine to work with hydrogen, relying on help and components from various corporate sponsors, including hydrogen-specific fuel injectors supplied by Clean Air Power.
"Hydrogen-fueled engines work very differently to normal petrol ones and require different parts that are not commercially available," explained Samuel Ray, Bath Hydrogen team leader. "We are lucky to have received help and equipment from our sponsors. We worked hard alongside Link Engine Management to program their ECU to work with hydrogen, for example."
The team's work was made even more challenging by the fact that none of the students had prior experience working with hydrogen or much knowledge about its use as a fuel.
"We started by reading all of the research and literature we could find, analyzing and cataloging it all to understand it and prioritize what was possible for us to pull off, as a fairly small team."
It seems the research and hands-on hard work have paid off so far, as the engine fired up on the first try. This version is simply a proof-of-concept and test bed that precedes the unit that will serve as the beating heart of the team's land speed record objectives. The record-targeted engine will be a Ford 2.3-liter EcoBoost adapted to hydrogen. Once ready, it will be mounted to the voluptuous Ginetta G20 pictured up top in pursuit of myriad hydrogen-combustion land speed records.
Beyond merely modifying the engine to run on hydrogen, the team will also need to engineer around hydrogen's pitfalls. Its plans call for equipping the vehicle with a fueling system built to FIA standards and an integrated fire suppression system. The current prototype engine is mounted to a cart for testing and must be operated outside via remote control panel to meet safety requirements.
The Hydrogen team comprises 15 third- and fourth-year students focused on various areas of engineering study, including automotive engineering and electrical engineering. It serves as one of the successors to the university's successful Team Bath Formula Student racing team, which was discontinued in 2022 to shift focus on zero-emissions vehicles.
We look forward to seeing the team's work and land speed record attempts. Much like professional racing, land speed records should prove a helpful means of advertising hydrogen combustion's ability to offer the desirable attributes of traditional gas and diesel ICEs, only without the CO2 emissions.
And in case you're wondering if this might be the first land speed record attempt using hydrogen combustion power, it's not. In fact, BMW previously set a total of nine world records with the truly ahead-of-its-time hydrogen V12-powered HDR single-seater way back in 2004.
Source: University of Bath
Hydrogen will never become a common fuel for transport, it's too inefficient, expensive and difficult to contain, not to mention the safety aspect (look it up, the stuff is explosive in a very wide range of concentrations with air).
https://www.sustainability-times.com/low-carbon-energy/formic-acid-could-fuel-cars-in-a-green-way/
"If done with traditional carbon dioxide devices, formic acid production requires energy-intensive purification steps, which are costly, explains the leader of the research team, chemical and biomolecular engineer Haotian Wang, who is an author of a new study in the journal Nature Energy.
The direct production of pure formic acid solutions will help to promote commercial carbon dioxide conversion technologies, Wang adds. During tests conducted in the laboratory the team’s electrocatalyst produced an energy conversion efficiency of around 42%, which means that half of the electrical energy can be stored in formic acid as liquid fuel.
“[Formic acid] is a fuel-cell fuel that can generate electricity and emit carbon dioxide — which you can grab and recycle again,” Wang explains.
“It’s also fundamental in the chemical engineering industry as a feedstock for other chemicals, and a storage material for hydrogen that can hold nearly 1,000 times the energy of the same volume of hydrogen gas, which is difficult to compress. That’s currently a big challenge for hydrogen fuel-cell cars,” he adds.
For me the main issue with any inclusion of hydrogen (H2) in our day-to-day energy needs is all the fluff that has been talked about 'green' H2 - ie using surplus renewable energy to make H2 by hydrolysing water. If only these ee-juts would spend just 5 minutes looking at the practical problems associated with this foolishness, they would realise it is completely bonkers.
The appalling lack of overall efficiency is only one part of it. The next major problem is where is all the water needed is going to come from? We (in the UK) are already regularly facing fresh water shortages and hydrolysing water to make H2 requires ~8 litres of water for every kg of H2 - enough to take a typical H2 fuel cell-powered car about 60 miles or ~18kWh of energy. Not just 'water', mind, or even 'fresh water' but *ultra pure water* which means energy has to be spent making it pure enough to hydrolyse (or it ruins the hydrolyser).
If you consider the implications of this fact, by way of illustrating the issue, if the total energy currently derived from fossil fuels were replaced by hydrolysed H2, the UK would need ~ *5 times* its current fresh water needs to make that amount of H2... and compared to some countries we are awash with water.
Let's hope these youngsters (and perhaps more importantly, their supervisors) come to their senses sooner rather than later.
But all this criticism is not based on fact. It's based on half-baked examples of where a little knowledge can be dangerous. For instance, the myth that hydrogen "requires 3 times the green electricity" persists. Current technology requires about 1.5 more green energy for hydrogen, and when you consider all the advantages, hydrogen becomes overwhelmingly attractive because it's capable of energy conversion, storage, and transport - something that no other single technology can accomplish. The myth that hydrogen requires ungodly volumes of water is another myth. It's true that hydrogen is a "secondary" greenhouse gas because it delays the breakdown of methane in the atmosphere. But calculations show that leaks from a hydrogen economy are not serious. Engineers have designed fittings that are hydrogen proof. Swagelok sells such fittings for hydrogen that are good to pressures up around 15,000 psi. So these critics need to let the engineers do what they're good at.
So where does all this amateur guessing come from? Probably people who want to appear knowledgeable. But it seems the less they know the more adamantly they assert erroneous beliefs. They believe they are thinking but are only thinking what they believe. Here's a good paper to read:
What would a green hydrogen US hydrogen economy look like?
https://academic.oup.com/ce/article/7/5/1148/7330997