【作者】

Marcel Ott

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。ABSTRACT Gas as a fuel for merchant shipping has gained considerable interest during the last years, primarily driven by its inherent potential to reduce emissions, and secondarily due to the fact that gas is a sulphur free fuel, with the potential to be readily available at a feasible price. Winterthur Gas and Diesel Ltd. (WinGD) has developed a low-pressure Dual-Fuel technology for slow speed 2-stroke engines which is capable of meeting emission requirements far below the IMO Tier III limits, utilizing a low cost, highly efficient and reliable low pressure gas admission system. The basic concept was presented in the 2013 CIMAC conference in Shanghai and the technology is now implemented on several bore sizes in the Generation X-engine range and is taken into commercial use. The technology is based on the lean-burn Otto-cycle combustion process in order to exploit the full emission reduction potential of gas as a fuel and thus fully complying with IMO Tier III emission limits without any exhaust gas after treatment. Additionally, only low pressure gas supply to the engines is required, in contrary to the competing technologies. These advantages allow substantial simplifications on the plant installations, resulting in considerable savings of first time installation cost and very competitive operating cost. The first application of this technology was made on a 50cm bore engine type, where a number of engines have been produced and in service for some time. In the meantime, the Dual-Fuel technology has been developed and released for larger bore, lower speed engines like the X62DF and X72DF. A joint development project with WinGD’s Japanese licensee Diesel United Ltd. (DU) has resulted in the installation of a 6 cylinder X72DF test engine at DU’s Aioi works, and extensive testing has taken place, ensuring that the Dual-Fuel technology is fulfilling the market requirements. Preparations to extend the technology to even larger bore X engines have been taken. The present paper gives an overview of the concept and describes the application of the technology on larger bore engines. Besides an outline of the test bed setup, test results of the X72DF test engine are being presented. Additionally, a number of market references of 2-s Dual-Fuel engines are shown.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

14

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