Alpine has unveiled the Alpenglow Hy6, featuring the company’s first 6-cylinder hydrogen engine, at the 2024 Paris Motor Show. This advanced iteration of the hydrogen-powered prototype demonstrates significant improvements over its predecessor, marking a major milestone in sustainable sports car technology.
Key Features and Performance Specifications
The Alpenglow Hy6’s new twin-turbocharged V6 engine delivers:
- 740 bhp power output (up from 340 bhp in previous model)
- 770 Nm torque at 5,000 rpm
- Maximum speed exceeding 330 km/h
- 9,000 rpm maximum engine speed
- 3.5-liter displacement
- 6-speed sequential gearbox
- Rear-wheel drive configuration
Advanced Hydrogen Engine Technology
The 3.5-liter V6 engine represents a breakthrough in hydrogen combustion technology. Developed entirely by Alpine, the engine features a 100-degree V configuration built on an aluminum engine block with dry sump. The design incorporates four chain-driven overhead camshafts and four valves per cylinder with finger cog control. The engine utilizes direct hydrogen injection complemented by indirect water injection, all housed within a specialized combustion chamber designed specifically for optimal hydrogen mixture management.
Hydrogen Storage and Safety Features
Alpine has implemented comprehensive safety systems throughout the Alpenglow Hy6. The vehicle utilizes three 700-bar composite tanks, each holding 2.1 kg of hydrogen, certified under Regulation 134 standards. A sophisticated network of hydrogen presence sensors continuously monitors the system, while emergency fuel evacuation valves provide additional safety measures. The storage compartments are thoroughly ventilated and isolated from the passenger area, with a color-coded incident alert system providing immediate status information.
Design Evolution and Aerodynamic Improvements
The Alpenglow Hy6 showcases significant design advancements through its transparent engine case display and comprehensively redesigned rear section. The Specular Blue carbon fiber bodywork integrates seamlessly with the aerodynamic elements, including precisely engineered NACA air intakes. A modified rear wing, constructed from transparent material, complements the updated cooling system featuring a triple louvre design. The vehicle’s aesthetic is completed by bespoke Michelin tires that harmonize with the innovative wheel design.
Interior Features
The Alpenglow Hy6’s interior combines functionality with advanced technology:
- Innovative elytra-style door opening mechanism for optimal access
- Light-reactive upholstery that adapts to changing conditions
- Real-time performance display system with advanced driver interface
- Racing-inspired steering wheel with integrated controls
- Strategic camera mounting points for track day recording
- Premium materials including carbon fiber and aluminum construction
- Customized bucket seats with performance-oriented positioning
- Advanced cockpit ergonomics for optimal driver control
Future Applications and Potential
The development of this hydrogen combustion engine technology opens new possibilities for sustainable motorsport. Alpine’s innovation positions the technology for implementation in future racing regulations, including potential participation in the 2028 24 Hours of Le Mans. Ongoing research into liquid hydrogen storage solutions demonstrates Alpine’s commitment to advancing this technology. The engine architecture shows promise for adaptation to production vehicles, offering an compelling alternative to fuel cell technology in performance applications.
Technical Specifications
The Alpenglow Hy6 measures 2.10 meters in width, 5.20 meters in length, and stands 1.14 meters high. Its powerplant delivers 544 kW (740 bhp) at 7,600 rpm, achieving an impressive specific power output of 211 bhp/liter and torque of 220 Nm/liter. These specifications underscore Alpine’s success in combining high performance with sustainable technology.
The Alpine Alpenglow Hy6 demonstrates the potential of hydrogen combustion technology in high-performance applications while maintaining the essential characteristics of traditional sports cars. This development positions Alpine at the forefront of sustainable motorsport innovation, preparing for future regulatory changes while preserving the excitement of performance driving.
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