CRP Technology and CRP Meccanica have collaborated with Alpine in the development and manufacturing of the intake plenum and manifold system for the Alpenglow Hy6, the hydrogen-powered rolling prototype.
The initial configuration combined 3D-printed polymer parts with bonded aluminum flanges, which caused sealing issues during bench testing due to thermal expansion differences, vibration and high thermal loads.
To address these limitations, Alpine turned to CRP Technology, which proposed a fully monolithic architecture produced via Selective Laser Sintering (SLS) using carbon fiber–reinforced thermoplastic Windform SP, requiring only minor design adjustments.
The final system consists of three monolithic components—one intake plenum and two intake manifolds—with integrated flanges that eliminate aluminum parts and ensure uniform material behavior under turbocharged operation.
After sintering, vapor smoothing optimized internal surfaces, while CNC machining by CRP Meccanica ensured accurate fit and sealing through a hybrid additive–subtractive workflow developed within the CRP organization.
The intake system successfully passed engine dyno validation, maintaining structural integrity under pressure cycles up to 5 bar, and was later installed on the Alpenglow Hy6 prototype for on-track testing, supporting faster development within Alpine’s hydrogen powertrain programme.
-
-
29 January 2026
