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AVL RACETECH says its prototype 2.0-liter turbocharged hydrogen engine produced 410 hp at 6,500 rpm on a testbed in Graz, Austria. The October 2023 result came from a hydrogen-fueled internal-combustion engine that combines water injection with a purpose-designed turbocharger; it is a development test, not a production rating or a race result.
What the prototype produced
AVL reported the figures after testing a hydrogen-modified engine on a testbed at its Graz headquarters. The company said the result confirmed its earlier simulations and met its initial output targets.
| Measure | AVL’s reported result |
|---|---|
| Peak power | 410 hp (301.7 kW) at 6,500 rpm |
| Torque | 500 Nm from 3,000 to 4,000 rpm |
| Power per liter | Approximately 205 hp per liter (150 kW per liter) |
These are figures AVL published for this prototype testbed engine in October 2023, not independently measured comparative data. Project leader Paul Kapus said AVL’s initial targets were 500 Nm and up to 300 kW, and that the team validated those figures on the testbed. AVL’s announcement does not provide a full calibration map or independent durability evaluation.
How water injection helps the hydrogen engine
AVL describes the setup as intelligent port fuel injection (PFI) with water injection into the intake air. The water is intended to help prevent unwanted premature ignition as the engine burns hydrogen. AVL says the prototype runs at lambda 1—the stoichiometric air-fuel ratio—rather than using lean combustion.
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A wastegate turbocharger designed for the application supplies the engine’s air demand. Together, the turbocharger, water injection and combustion strategy describe AVL’s approach to this prototype; the release does not disclose enough calibration detail to assess how the system behaves across different loads or operating conditions.
It is a combustion engine, not an emissions-free powertrain
Hydrogen combustion does not emit carbon from the hydrogen fuel itself, but it can still produce nitrogen oxides (NOx). New Atlas noted this concern for hydrogen engines, particularly with stoichiometric combustion. Neither the AVL announcement nor the contemporaneous New Atlas report establishes lifecycle emissions, the hydrogen’s production source, or comparative vehicle efficiency. The 410-hp result alone therefore cannot show the overall environmental impact of a vehicle using this engine.
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What happens after the testbed result?
AVL said it developed the engine over several months with Hungarian HUMDA Lab and described it as AVL RACETECH’s first race engine under its own name. The company identified in-car racetrack testing as the next development milestone in its October 2023 announcement. That plan does not establish whether the track test later took place, and the reported testbed result is not evidence of an independently observed race performance.
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