The structure is largely the same as that for gasoline vehicles, but improvements have been made, including a change to a casting material that is less prone to hydrogen leakage and the use of low-conductivity coolant to prevent rusting.
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MAHLE hydrogen power cell unit (PCU) 2025 JSAE Automotive Engineering Exposition MAHLE GmbH
-Pistons for hydrogen engines. -To suppress abnormal combustion, which is an issue in hydrogen engines, oil intrusion into the combustion chamber is minimized, and hydrogen leakage (blow-by) into the crankcase is also suppressed. -Mass production will begin in 2025 for MAN's hydrogen engine trucks.
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Bearing cap for hydrogen engine 2025 JSAE Automotive Engineering Exposition Daido Metal Co., Ltd.
- Injector for hydrogen engines, capable of spraying in two patterns (downward and sideways). This makes it possible to create a homogeneous mixture of hydrogen and air by direct injection.
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Bearings for FCV hydrogen circulation pumps Auto Shanghai 2025 NSK Ltd.
Motor speed greater than 150kRPM, DC power consumption is 15kW 2 million start-stop lifespan, energy consumption is reduced by 5-10% Oil-free foil bearings are used, and the stack is designed to be pollution-free Mass production timing: 2024
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Electric turbocharger Auto Shanghai 2025 Garrett Motion Inc. (Formerly Honeywell Turbo Technologies Inc.)
48V and 400V integrated controller Maximum speed 225kRPM Maximum output power exceeds 5kW, maximum recovery power exceeds 3kW, power density can be increased to 30% Advanced combustion concepts such as lean burn and hydrogen internal combustion engines can be realized Mass production timing: 2021
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New generation hydrogen fuel cell electric air compressor Auto Shanghai 2025 Garrett Motion Inc. (Formerly Honeywell Turbo Technologies Inc.)
Designed for medium and heavy-duty commercial vehicles, mass production is expected in 2026 Design life is greater than 25,000 hours, DC power consumption is 50kW, and efficiency is increased by 20-30%
Developed with FirstElement Fuel, the CryoPump refueling stations are designed to enable economical refueling, improving transport capacity, and reducing operating costs by up to 70%; This is enabled through the use of liquid hydrogen and new pump technology based on an electro-hydraulic drive concept with extended stroke length compared to traditional crankshaft-based pumps. This helps minimize boil-off losses.
Components shown include power transfer unit, compressor, anode recirculation blower, injector, control uits, tank valves, tank manifolds, tank plugs, and pressure control valves
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