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MIT Startup LNK Energies Develops On-Board Hydrogen Conversion for Diesel Trucks
Key points
- LNK Energies converts diesel trucks to hydrogen.
- System uses compact on-board reactor for LOHCs.
- Reduces total ownership cost by 13% compared to diesel.
- Eliminates high-pressure hydrogen storage.
Converting Diesel to Hydrogen
LNK Energies, an MIT startup, has developed a method to convert existing heavy-duty Class 8 trucks from diesel to hydrogen fuel. This conversion aims to reduce both pollution and operational costs for truck operators. The company claims a 13% reduction in the total cost of ownership compared to diesel trucks.
Addressing Hydrogen Storage Challenges
Traditional hydrogen fuel systems for long-haul trucking face challenges with storage and transport due to the need for high-pressure tanks and extensive infrastructure. LNK Energies addresses this by carrying hydrogen chemically attached to liquid organic hydrogen carriers (LOHCs). These liquids absorb and release hydrogen, a method previously studied for large-scale transport but not for on-vehicle use.
Compact On-Board Reactor Technology
A key innovation from LNK Energies is a compact reactor, reduced to the size of a mini-fridge, which separates hydrogen from the LOHC directly on the truck. Previous LOHC reactors were significantly larger, often the size of a shipping container. This miniaturization allows for on-board hydrogen generation, eliminating the need for high-pressure hydrogen compression and storage (over 11,000 psi) on the vehicle.
Engine Compatibility and Efficiency
Once released by the on-board reactor, the hydrogen can be burned in a conventional internal combustion engine, similar to those found in current diesel trucks, with minor modifications. The system also utilizes waste heat from the engine to assist in powering the on-board reactor, contributing to overall efficiency.
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Reporting from
LNK Energies, an MIT startup, developed a system to convert heavy-duty diesel trucks to hydrogen power using a compact on-board reactor. This technology aims to reduce fuel costs by 13% and lower emissions by chemically carrying hydrogen in liquid organic hydrogen carriers (LOHCs). The system eliminates the need for high-pressure hydrogen storage and allows hydrogen to be burned in modified conventional engines.