Caterpillar and ORNL Develop Efficient Methanol Dual-Fuel Marine Engine
A dual-fuel combustion strategy enables efficient powering of inland and coastal vessels using methanol and diesel. This innovation could enhance fuel flexibility and reduce reliance on conventional marine fuels.
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Caterpillar Inc. and Oak Ridge National Laboratory (ORNL) have developed a dual-fuel combustion system that facilitates the use of methanol in marine engines, particularly for inland and coastal vessels. The system utilizes a small amount of diesel as a pilot fuel to ignite methanol, overcoming its ignition challenges in compression-ignition diesel engines.
With this method, marine engines can run on over 75% methanol without compromising performance. While some engine updates are necessary, the design avoids a complete overhaul, maintaining the option for either diesel or dual-fuel operation. This advancement may significantly enhance fuel flexibility in the maritime sector and reduce dependence on traditional fuels.
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