On January 21, 2021, Mitsubishi Heavy Industries Group (MHI, Headquarters: Tokyo) announced that its subsidiary company, Mitsubishi Heavy Industries Engine & Turbocharger (MHIET, Headquarters: Sagamihara, Kanagawa Prefecture), had conducted a combustion test for a pure hydrogen engine in collaboration with Japan’s National Institute of Advanced Industrial Science and Technology (AIST, Headquarters: Tokyo), a Japanese research institute.
This combustion test installed a modified single cylinder gas engine (bore 170mm x stroke 220mm) made by MHIET at the AIST Fukushima Renewable Energy Institute in Koriyama City, Fukushima Prefecture. The test aims to validate and confirm certain conditions for combusting hydrogen without emitting CO2.
MHIET and the MHI Research and Innovation Center have jointly developed and produced the hydrogen engine by leveraging their knowledge of hydrogen combustion technologies, diesel engines, and natural gas engines. Since AIST has prior experience in developing large-scale, high-power, high thermal efficiency, and low NOx hydrogen engines, the research institute has been responsible for building and testing the hydrogen power generation facility, as well as collecting data from the test. Based on the test results, the hydrogen power output is expected to increase up to 340kW for a 6-cylinder engine and 920kW for a 16-cylinder engine. MHIET plans to conduct further tests and gather more data in order to build a multi-cylinder hydrogen engine with 1MW of output.
Both MHI and MHIET have prior experience in hydrogen R&D: MHI has been developing zero-CO2 emission products, while MHIET has also been developing hydrogen engines and has been partnering with AIST to conduct hydrogen engine combustion research since FY2019. MHIET plans to replace its gas engine generator with EBLOX, its triple-hybrid, self-sustaining power supply system, including a hydrogen engine generator. MHI has stated that it will continue to contribute to an energy-stable and carbon-free society by utilizing solar power, batteries, and hydrogen energy.[1]