Kawasaki Motors, Ltd.
Suzuki Motor Corporation
Honda Motor Co., Ltd.
Yamaha Motor Co., Ltd.
Ministerial Approval Granted to Form Research Body “HySE” forDevelopment of Hydrogen Small Mobility Engines to Help Build
Decarbonized Society
Tokyo, May 17, 2023 ― Kawasaki Motors, Ltd. (hereinafter “Kawasaki Motors”),
Suzuki Motor Corporation (hereinafter “Suzuki”), Honda Motor Co., Ltd. (hereinafter“Honda”), and Yamaha Motor Co., Ltd. (hereinafter “Yamaha Motor”) jointly
announced today that they have received approval from the Ministry of Economy,
Trade and Industry to form a technological research association called HySE
(Hydrogen Small mobility & Engine technology) for developing hydrogen-poweredengines for small mobility.*
To realize a decarbonized society, a multi-pathway strategy to address various
issues in the mobility sector is necessary, rather than focusing on a single energy
source.

Againstthisbackdrop,

researchanddevelopment

targeted

atcommercialization of mobility with engines powered by hydrogen－deemed a nextgeneration energy source－is gaining momentum.
However, the use of hydrogen poses technical challenges, including fast flame
speed and a large region of ignition, which often result in unstable combustion, andthe limited fuel tank capacity in case of use in small mobility vehicles. In addressingthese issues, the members of HySE are committed to conducting fundamental
research, capitalizing on their wealth of expertise and technologies in developing
gasoline-powered engines, and aim to work together with the joint mission ofestablishing a design standard for small mobility’s hydrogen-powered engine, andof advancing the fundamental research endeavors in this area.
The members of HySE will continue to deepen their collaborative relations in orderto provide a variety of small mobility options to users and meet their diverse needs,
thereby contributing to the realization of a decarbonized society.
�Kenji Komatsu, Chairman nominee of HySE and Executive Officer of TechnicalResearch & Development Center, Yamaha Motor Co. Ltd., comments, “We are
extremely pleased to announce the planned formation of the association. There aremany challenges in the development of hydrogen-powered engines, but we hope tosee the association’s activities advance the fundamental research in order to meetthose challenges. We are committed to this endeavor with a sense of mission topreserve the use of internal combustion engines, which epitomize the long-timeefforts that our predecessors have invested.”■ Main research and development areas, and the role of each company:
1. Research on hydrogen-powered engines
Research on the model-based development of hydrogen-powered engines (Honda)
Element study on functionality, performance, and reliability of the hydrogenpowered engines (Suzuki)
Hands-on research using real hydrogen-powered engines on their functionality,performance, and reliability (Yamaha Motor, Kawasaki Motors)
2. Study on hydrogen refueling system
Studying the requirements for a hydrogen refueling system and hydrogen tanks forsmall mobility (Yamaha)
3. Study on fuel supply system
Studying the auxiliary equipment required for a fuel supply system and tanks, andthe equipment installed between the fuel tank and the injector (Kawasaki Motors)
In

additiontothe

fullmembers(thefouraforementioned

motorcycle

manufacturers), Kawasaki Heavy Industries, Ltd. (hereinafter “Kawasaki HeavyIndustries”) and Toyota Motor Corporation (hereinafter “Toyota”) support theassociation as special members. Kawasaki Heavy Industries, being one of the mainorganizers of the “CO2-free Hydrogen Energy Supply-chain Technology Research
Association” (hereinafter “HySTRA”), will drive forward HySE’s activities, based on
the knowledge gained from its activities for HySTRA. Toyota, on the other hand, willassume the role of leveraging HySE’s research results to the maximum benefit forthe development of hydrogen-powered engines, utilizing its know-how onexperiments, analyses, and the designing of large hydrogen-fueled power units forfour-wheel vehicles.
■Overview of HySE (Details, including members, are still in the planning stage)【Name】 Hydrogen Small mobility & Engine technology (HySE)【Address】 Yaesu Central Tower 2-2-1 Yaesu, Chuo-ku, Tokyo【Chairman】 Kenji Komatsu（Executive Officer, Yamaha Motor Co. Ltd.）【Members】 Regular Members: Kawasaki Motors, Suzuki, Honda, and Yamaha Motor
Special Members: Kawasaki Heavy Industries and Toyota【Establishment】 Establishment procedures in progress*Small mobility: motorcycles, Japan-originated mini-vehicles, small marine vessels,
construction equipment, drones, etc.