SOLUTION 01 / Environmental Load Reducing

船用发动机与柴油和天然气燃料结合使用,具有更清洁的排放和更大的动力。

大型电源产品管理部,电源解决方案业务
From the perspective of global environmental protection, emission regulations have been stricter in the marine world, and reduction of environmental pollutants such as NOX and SOX has become a challenge. To reduce environmental impacts, Yanmar has developed a dual fuel engine that can switch between diesel and natural gas fuel (LNG). The installation of Dual Fuel Engines on tugboats and other are increasing.

ISSUE

考虑全球环境并以高经济效益运转的发动机

Large vessels operating in the seas around the world are equipped with engines with high power. An issue confronting our world today is the air pollutants from the emission of those large engines. In recent years, the use of natural gas has attracted attention. Liquefied natural gas (LNG) is environmentally friendly and can reduce greenhouse gases. Therefore, Yanmar has begun developing the dual-fuel engine that can flexibly use both LNG and diesel fuel to take advantage of eco-friendliness and wider availability. We set the goal high to develop a new engine complying with The International Marine Organization (IMO) Tier 3 NOX (IMO3) and SOX regulations for all sea areas based on a reliable model that can pursue improvements in the life cycle value (LCV) for customers.

Effective since January 1, 2016, the 3rd tier regulation (IMO3) is that IMO requires on the standard of NOX emission control. IMO3 to regulate 80% lower emissions than the primary regulation, is applied within a designated sea area called NOX Emission Control Area (N-ECA). The US and Canadian coasts, the U.S. Caribbean, the North Sea and the Baltic Sea have already been regulated for SOX, while the U.S. and Canadian coasts have already been regulated for NOX. The North Sea and the Baltic Sea will be subject to regulation from January 1, 2021.

SOLUTION

利用洋马技术实现安全稳定的导航

洋马公司开发的双燃料发动机采用了高精度的气流控制技术。始终保持最佳燃烧条件,这使得在同时使用天然气和柴油时,运行更加可靠和稳定。此外,采用了独特的控制系统以确保在海上作业时的安全性。通过对设备进行多路复用,我们实现了安全性和冗余性,使得每个轴仅一台机器即可实现安全导航。此外,它还配备了自己的空燃比控制和爆震检测系统。即使在使用甲烷含量低的天然气燃料时,也会担心异常燃烧(爆震),但仍会实时分析气缸压力。通过高速控制,可以避免爆震。双燃料发动机可与世界各地的天然气兼容,并且可以不受功率限制地运行。在导航过程中,即使在最大输出时,也可以从柴油模式切换到汽油模式。在紧急情况下,它可以安全,即时地从汽油模式切换到柴油模式。

RESULT

符合严格的环境法规

In the gas mode of the developed model, 6EY26DF, we achieved approximately 80% of NOX (nitrogen oxide) , 25% of CO2, 99% of SOX (sulfur oxide) and PM (particulate matter) reduction compared to our previous model in the same engine class, 6EY26W. Meeting the 3rd tier IMO standard while maintaining its advantages such as high fuel efficiency and power, we created new technologies that address the global issues of reducing environmental impacts and fluctuating fuel prices. Yanmar has been driving the evolution of engines, and will continue to diversify technologies for the next generation.

INTERVIEW安装在Ishin上
凝聚人心成为项目的动力

自2019年3月以来,这艘名为“Ishin”的拖轮一直从事大阪湾和濑户内海大型货船的安保工作,并牵引港口进出。作为日本第一艘使用液化天然气作为燃料并符合IGF规范(*)标准的拖船,它引起了人们的关注。Yanmar的双燃料发动机6EY26DF被安装为“Ishin”的主推进发动机。

拖船及其特有的工作特性会因推拉更大,更重的船舶或货物而给发动机施加突然的重负荷。测试负责人杜伊(Doui)回顾道:“洋马(Yanmar)没有生产船用燃气发动机的历史,而且燃气模式通常易受负载波动的影响。作为第一个交付的产品,我觉得这个项目真的很困难。”Doi先生和系统设计经理Kubo先生说:“在与有关合作伙伴的会议上,我们被问到是否可以继续进行,并被告知,如果他们如果不符合标准,就不能使用拖船。即使言语刻薄,我们也共同努力达到了期望并不断解决问题。” 。负责发动机设计的Nishimura说,“我们彻底评估了安全方面的问题,以便机组人员可以在和平的环境下使用汽油模式。”

起初起航时,服务部门和开发部门的成员登上了拖船。每个共同的合作伙伴都称赞,随着船形的形成,团结的感觉正在建立。那是纯粹的喜悦和令人印象深刻的工作。该项目是通过客户和洋马的共同推广而实现的。

* IGF规范:2017年发布的使用气体或其他低闪点燃料的船舶的国际安全规范,以指定安全要求。

*截至2020年4月的部门/隶属关系信息。