Development of Advanced Small Hydrogen Engines Page: 2 of 88
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Award No: DE-FC26-06NT43026
Abstract
The main objective of the project is to develop advanced, low cost conversions of small (< 25
hp) gasoline internal combustion engines (ICEs) to run on hydrogen fuel while maintaining the
same performance and durability. This final technical report summarizes the results of i) the
details of the conversion of several small gasoline ICEs to run on hydrogen, ii) the durability test
of a converted hydrogen engine and iii) the demonstration of a prototype bundled canister solid
hydrogen storage system. Peak power of the hydrogen engine achieves 60% of the power output
of the gasoline counterpart. The efforts to boost the engine power with various options including
installing the over-sized turbocharger, retrofit of custom-made pistons with high compression
ratio, an advanced ignition system, and various types of fuel injection systems are not realized.
A converted Honda GC160 engine with ACS system to run with hydrogen fuel is successful.
Total accumulative runtime is 785 hours. A prototype bundled canister solid hydrogen storage
system having nominal capacity of 1.2 kg is designed, constructed and demonstrated. It is
capable of supporting a wide range of output load of a hydrogen generator.2
Energy Conversion Devices, Inc.
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Sapru, Krishna; Tan, Zhaosheng & Chao, Ben. Development of Advanced Small Hydrogen Engines, report, September 30, 2010; United States. (https://digital.library.unt.edu/ark:/67531/metadc843830/m1/2/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.