FKFS Veranstaltungen

2025 Stuttgart International Symposium
on Automotive and Engine Technology

3. - 4. Juli 2025

Session: Thermomanagement & Supercharging | | 12:30 - 13:00

Supercharger Boosting on H2 ICE for Heavy Duty applications

Nicola Andrisani, Eaton srl

Commercial vehicle powertrain is called to respect a challenging roadmap for CO2 emissions reduction, quite complex to achieve just improving technologies currently on the market. In this perspective alternative solutions are taking interest, and the use of green H2 as fuel for ICE is considered a high potential solution with fast and easy adoption. To assure the required low engine out NOx emission to fulfill future legislations the engine should be operated with lean air fuel rations all over the engine map. A challenge following this strategy is to supply sufficient boost pressure for sufficient air mass flow rate to target same power output as the diesel engine. At the same time the transient response improvement is the key to keep NOx emission low also during transient engine operation. The analysis presented in this paper will show and quantify the positive impact that a supercharger has on both the above mentions problems. It is capable to guarantee same torque output as diesel engine maintaining same engine displacement, while simultaneously improving transient response keeping the air fuel ratio on the desired level. Eaton has Supercharger in its portfolio products since decades. The long experience on different applications makes it a ready now technology helping a faster introduction of H2 ICE solution on HD market application.