Machine having hydrogen engine hybrid power system and control strategy for same
US12337820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2023 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Apr 21, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D29/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Operating a hybrid power system for a machine includes combusting a direct injected gaseous hydrogen fuel in an engine operating an electrical generator, and increasing a load demand of the hybrid power system. Operating the hybrid power system further includes operating an electrical-assist compressor to supply an increased airflow into the engine based on an increased engine power demand to satisfy the increased load demand. Air-fuel equivalence ratio of the engine (so-called “lambda”) is maintained at a ratio of about 2 or greater to limit NOx emissions, and between a hydrogen fuel misfire limit and a hydrogen fuel preignition limit. Related apparatus and control logic is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.