Concept for High-performance Direct Ignition Gas Engines
Concept for High-performance Direct Ignition Gas Engines
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高性能直燃式燃气发动机概念
DOI：
10.1007/s38313-013-0048-x
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
C. Trapp
中科院分区：
文献类型：
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作者：
J.;A. Leitner;Georg Tinschmann;C. Trapp
现代燃气发动机是未来全球分散能源供应的关键部分。与其他化石燃料相比，天然气的资源量要高得多，可替代燃料气体的数量也在不断增加。此外，燃气发动机以高效率和低排放水平提供能源。2兆瓦以下的功率等级主要由非天然气（如沼气）主导，具有更高功率输出的发动机倾向于使用天然气。本课程的要求是能够在温带和热带潮湿气候带的各种环境条件下以及在高达4000米的安装高度下处理各种气体质量变化的能力，例如具有各种甲烷含量的天然气，伴生石油气，沼气和垃圾填埋气。因此，对机械发动机部件、点火系统、涡轮增压器效率和燃烧概念的要求将显著提高[1,2]。为了实现每年约8000小时的发动机运行时间和超过95%的发动机可用性，在计划的大修之前，发动机的使用寿命为60,000小时，无人工厂运行是一个进一步的挑战。本文讨论的发动机被称为通用电气（GE）的Jenbacher 4型燃气发动机，功率为1至2兆瓦，就发动机数量而言，这是燃气发动机领域最大的级别。
Modern gas engines are key part of a future world-wide decentralised energy supply. Compared to other fossil fuels, natural gas resources are significantly higher and the amount of available alternative fuel gases is growing. Furthermore, gas engines provide energy at high efficiencies and at low emission levels. The power classes up to 2 MW are dominated by non-natural gases, such as biogas, with a trend towards natural gas for engines with higher power output. The requirements in this class are the ability to cope with wide variations of gas qualities, such as natural gas with various methane numbers, associated petroleum gas, biogas and landfill gas, under all kinds of ambient conditions in temperate and tropical humid climate zones and at installation heights of up to 4000 m. As consequence, the requirements for the mechanical engine components, the ignition system, turbocharger efficiency and combustion concept will rise significantly [1, 2]. Unmanned plant operation is a further challenge in terms of availability in order to obtain annual engine running times of approximately 8000 hours and an availability of over 95 % with an engine service life of 60,000 operating h until the scheduled major overhaul. The engine discussed in this paper, known as the General Electric’s (GE’s) Jenbacher Type 4 gas engine, is in the 1 to 2 MW sector, which represents the largest class of the gas engine segment in terms of the number of engines.