Onboard Implementation of an Ultra-Compact Hydrogen-Generator for Efficiency and Emissions Benefits in IC Engines
PCI’s Approach and Technology: It is well known that H2 addition into a gasoline IC engine can enhance combustion stability at dilute conditions, improved efficiency and lower emissions. However, achieving efficient on-board H2 generation has been a challenge. PCI demonstrated a breakthrough technology for meeting rigorous onboard requirements. The H2 generator is based on a novel and proprietary catalyst (high space velocity Microlith) and reactor designs (patented by PCI). Engine integration comprised redirecting a small fraction of the gasoline to the engine via PCI’s catalytic partial oxidation reactor which reformed the gasoline into H2 and CO, and introducing it at the inlet of the engine. During Phase IIB the technology was matured and deployed in an integrated fuel processing unit on multiple engines with automotive OEM and Tier I suppliers and with the technical advice and guidance of a major U.S. automotive manufacturer. Multiple parties (4) performed extensive testing and produced overlapping results that reinforced the capabilities of the reforming system. Seven Engine integrations with were completed over the Phase IIb period including a road going, race track tested integration on a motorcycle. Three compact on board hydrogen generation evaluation units were completed along with deployment and support packages. Benefit to cold start emissions is significant and of interest to OEMs. Fast start of the fuel processor was demonstrated with hydrogen available in as little as 2.5 seconds. Each integration reinforced others in lean limit extension, engine stability, and positive benefits to emissions and fuel efficiency. NOx reductions of as much as 15x were demonstrated with the ability to meet 1g/kWh and 0.25 g/kWh demonstrated. BSFC reductions varied depending on application but were consistently demonstrated. Ultra-lean operation was possible with stable operation.
- Research Organization:
- Precision Combustion Inc.
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- SC0013709
- OSTI ID:
- 1839431
- Type / Phase:
- SBIR (Phase IIB)
- Report Number(s):
- DOE-PCI-13709-F
- Country of Publication:
- United States
- Language:
- English
Similar Records
Solar Energy Powered Material-Based Conversion of CO2 to Fuels
Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications