Open AccessModifying Single-Cylinder Diesel Engine Become Dual-fuel System to Reduce NOx Emission and Maintain Fuel Efficiency
Author(s) -
Ari Santoso,
Semin Semin,
Bambang Sampurno,
Beny Cahyono
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1052/1/012003
Subject(s) - diesel engine , automotive engineering , diesel fuel , nox , diesel cycle , cylinder , engine efficiency , environmental science , piston (optics) , petrol engine , compression ratio , engineering , internal combustion engine , mechanical engineering , combustion , chemistry , physics , organic chemistry , optics , wavefront
Tier III of Annex VI from MARPOL 73/78 about NOx emission control soon may be implemented at a global level. There are three potential methods to fulfill the Tier III. First is derating power, second is using gas as fuel, and the third one is installing SCR. This research deals with using CNG as diesel engine fuel. This initial study was occupied a single-cylinder diesel engine. Gas cannot burn inside conventional diesel cycles. Dual fuel technology also tends to reduce fuel efficiency compared with the conventional one. Therefore, the single-cylinder engine was modified its piston crown part to overcome both problems. The modification of piston crown geometry affects the engine compression ratio. Modify the conventional diesel engine to become the dual-fuel type is concluded as a potential technique to be developed. The study results show NOx reduction up to 33.68% and the fuel efficiency increase up to 1.512% without any disruption to the engine operating conditions.