Affiliation:
1. School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
2. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
3. Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macau 999078, China
4. Foundation Department, Guangzhou Maritime University, Guangzhou 510725, China
Abstract
Sustainable ammonia is one of the leading candidates in the search for alternative clean fuels for marine applications. This paper aims to build a simulation model of a six-cylinder, four-stroke diesel engine to investigate the effects of increasing the ammonia proportion in methanol–ammonia fuel blends on engine performance and emissions. In the present study, the conditions of different speeds and different proportions of ammonia in fuel blends are investigated. The results show that the average effective pressure, brake power, and brake torque increase by about 5% with an increased ammonia substitution ratio. In terms of economic performance, the changes under medium and low speed conditions are not obvious. However, the change in high speed conditions is significant. The brake specific fuel consumption (BSFC) is reduced by 6.6%, and the brake thermal efficiency (BTE) is increased by 4%. It is found that the performance of the engine is best at medium speed. The best performance is achieved with higher efficiency and lower emissions. The present results can provide guidance for the optimization of ammonia–methanol blends and their applications in engines.
Funder
Ministry of Education of the China University Innovation Fund Project
Sub-project of Guangdong Provincial Science and Technology Planning Project
Basic and Applied Basic Research Project of Guangzhou Science and Technology Bureau
College Scientific Research Project of Guangzhou Education Bureau—Innovation Team Scientific Research Project
Provincial Higher Education Teaching Reform Project
Guangzhou Education Science Planning Project
Provincial Quality Engineering Project
Guangzhou Higher Education and Teaching Reform Project
Scientific Research Capacity Improvement Project of Key Construction Discipline of Guangdong Province
2023 Basic and Applied Basic Research Project of Guangzhou Municipal Bureau of Science and Technology
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
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