环境压力,意味着排放物正成为海运业的一个重要问题并担心成为陆地的污染源。目前虽然不能控制来自海运动力的设备的排放物,但一个世界性、国家和地区性法规的正式决定正处在若干国家政府提出的过程中。内燃机固有的特点是,在高温工作周期时能有效地燃烧低级燃料,但在排放方面造成一定的困难。大量的硫、灰分和 Environmental pressures mean that emissions are becoming an important issue for the shipping industry and are concerned about becoming a source of land-based pollution. Although emissions from equipment powered by maritime transport are not controlled at this time, the official decision of a worldwide, national and regional regulation is in the process of being presented by several governments. Inherent features of internal combustion engines are that low-grade fuels can be effectively combusted at high temperature duty cycles, but with some difficulties in emissions. A lot of sulfur, ash and