Hydrogen engine test and development
Emissions of carbon dioxide and fine dust reduced by 99% and 90%, respectively
Amid the fierce competition throughout the globe to develop hydrogen mobility technologies to achieve carbon neutrality, a new technology for a 2-liter class hydrogen-fueled engine (a passenger car hydrogen engine) capable of running entirely on hydrogen has been developed for the first time in the country.
The joint research team led by Principal Researcher Young Choi of the Department of Mobility Power Research of the Korea Institute of Machinery and Materials (President Sang-jin Park, hereinafter referred to as KIMM), an institute under the jurisdiction of the Ministry of Science and ICT, and Researcher Hong-gil Baek of the Zero-Carbon Engine Research Lab of Hyundai-Kia Motor Company (Chairman Eui-sun Chung, hereinafter referred to as HMC) developed the “direct injection hydrogen engine” that runs entirely on hydrogen fuels, and demonstrated its world-class excellence through performance evaluation.
The joint research team of KIMM and HMC injected hydrogen directly into the combustion chamber of the engine of HMC’s existing hybrid vehicle, with a pressure larger by more than 30 times than atmospheric pressure (or with a pressure of more than 30 bar). By using a turbo charger that improves the performance of the engine, the research team was able to maintain high thermal efficiency in all domains from the ignition of the engine to the upper limit of the engine load, allowing the engine to be stably operated throughout the entire engine operating conditions.
In the case of conventional “port injection engines*,” the amount of air that flows into the combustion chamber declines because of the space taken up by the hydrogen fuel that exists in a gaseous state, which leads to lower fuel efficiency and poorer engine performance due to the backfire of the hydrogen fuel and air.
* Port injection hydrogen engine: A port injection hydrogen engine is a type of internal-combustion engine that uses hydrogen as fuel, and combusts hydrogen after mixing it with air by injecting hydrogen using an upper inhaling port instead of injecting it into the cylinder.
On the other hand, the “direct injection hydrogen engine” newly developed by the joint research team has fundamentally resolved the issue of backfire by injecting high-pressure hydrogen fuel directly into the combustion chamber. At the same time, the high compression ratio, fuel stratification, and ultra-lean combustion help to maximize thermal efficiency and improve power performance, while at the same time reducing the amount of harmful emissions.
Compared with gasoline engines, the newly developed hydrogen engine helps to reduce the emissions of carbon dioxide and fine dust by 99 percent and 90 percent, respectively, which meets EU (or European Union)’s requirements for zero-emission vehicles. Additionally, the hydrogen engine emits nitrogen oxides* of less than 15 ppm even without an aftertreatment system that purifies exhaust gases, achieving a high thermal efficiency of up to 40 percent.
* Nitrogen oxides: Nitrogen oxides are chemicals that are created through the reaction between nitrogen and oxygen, and are usually generated during the combustion process of vehicle engines and power plants, etc. Nitrogen oxides are considered to be harmful to the environment, and high emissions of nitrogen oxides may lead to health problems related to respiratory diseases.
Principal Researcher Young Choi of the Department of Mobility Power Research of KIMM said, “The newly developed hydrogen engine technology is an instantaneous and economical technology that can help to replace fossil fuels, which are currently being used as the main power source for vehicles, with carbon-free hydrogen fuels.” He added, “Through collaboration with HMC, we will verify the durability of the engine and also expand the application of this technology to not only passenger vehicles but also commercial vehicles and electricity generation power units. Through continuous research and development of technologies for generating power using carbon-free fuels, we will take the lead in the realization of carbon neutrality.”
Original Article: Era of hydrogen-fueled vehicles to begin — World-class technology technology for a 2-liter class hydrogen engine (or a passenger car hydrogen engine) capable of running entirely on hydrogen has been developed for the first time in the country
More from: Korea Institute of Machinery and Materials
The Latest Updates from Bing News
Go deeper with Bing News on:
- Air Travel Will Never Be the Same Again Thanks to This Record-Setting Hydrogen-Fueled Plane
History was made in January 2023 when ZeroAvia, a British/American hydrogen-electric aircraft developer, announced that it had completed a flight with its 19-seat Dornier 228 twin-engine jet powered ...
- Airbus invests in hydrogen-electric company ZeroAvia
Latest financing round boosts plans to progress ZeroAvia engine certifications and Airbus ZEROe aircraft, as well as LH2 storage, fuel cells and refueling operations.
- Trucking's hydrogen future nears reality overseas
In Germany and elsewhere in Europe, dozens of hydrogen refueling stations are coming online, supporting municipal fuel-cell fleets, passenger cars, and emerging FCEV trucks, ...
- I Rode in the Hydrogen Lexus UTV, and It's a Riot
If more off-roaders got the chance to experience a hydrogen-burning side-by-side like this, demand just might soar. But it (probably) won't happen.
- hydrogen engine
JCB manufactures diesel engines for big machines, but is now looking to switch things up for a cleaner future. To that end, the company is working on hydrogen-burning engines for its big machines.
Go deeper with Bing News on:
Direct injection hydrogen engine
- Why liquid hydrogen could head off-road before fuelling passenger cars
For medium pressure port fuel and direct injection in hydrogen applications ... and their aggressive timescales mean there is strong industry interest in developing engines for heavy-duty applications ...
- Perkins unveils new 690hp, 13-litre straight-six engine
Perkins has unveiled a 12.9-litre straight-six engine that is expected to start appearing in farm machinery from 2026. There are eight variations of the ...
- See The Bold, Revisionist Design That Could Keep The Combustion Engine Alive
It’s no secret that many car enthusiasts are less than thrilled about the auto industry’s electric future. However, many countries are gradually banning Internal Combustion Engine (ICE) sales over the ...
- Hydrogen engine adds to future green transportation fleet
Choi said the team will continue their research to enhance the reliability of the engine and expand the hydrogen direct injection engine technology to bigger vehicles and electricity generation power ...
- UHL and H2i unveil hydrogen injection kits for diesel engines
H2i has manufactured ten commercially ready hydrogen injection kits, which can be used within current diesel-powered combustion engines to reduce ... does not produce any direct greenhouse gas ...