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http://dx.doi.org/10.5916/jkosme.2010.34.8.1050

The Effect of Hydrogen Added into In-let Air on Industrial Diesel Engine Performance  

Park, Kweon-Ha (한국해양대학교 기계정보공학부)
Lee, Jin-A (한국해양대학교 대학원 기계공학과)
Lee, Wha-Soon (한국폴리텍대학 자동차과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.34, no.8, 2010 , pp. 1050-1056 More about this Journal
Abstract
Diesel engines introduce only air into the cylinder, and the air is high lycompressed. Fuel is directly injected into the combustion chamber in high temperature and pressure. Therefore diesel engines have high thermal efficiency because of the high compression ratio, while having high level of particulate matter and nitrogen oxide emissions because of the direct fuel injection. Many technologies have been developed to reduce particulate matter and nitrogen oxide emissions from diesel engines. One of the technologies is hydrogen fuel introduced into the combustion chamber with diesel fuel. In this thesis tiny amount of hydrogen is supplied into the combustion chamber in order to enhance the combustion performance. The engine, in which hydrogen is introduced, is tested. There are 20 test conditions given as 5 torque values of 100%, 75%, 50%, 25%, 0%, and 4 engine speeds of 700rpm, 1000rpm, 1500rpm and 2000rpm for the two cases with or without hydrogen addition. Maximum torques and Idle torques at each engine speed are measured, then the torque values are divided into 4 levels with 25% increasing step. The result shows that the fuel consumption, smoke, CO are reduced while the NOx emission is slightly increased, and the hydrogen addition has not a great effect on the performance at low loads but a great effect at a maximum load.
Keywords
Hydrogen; Industrial diesel engine; Performance test;
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