船用大功率柴油机价格走势分析及预测

介绍了国内外船舶中低速大功率柴油机的发展,分析了近年来中低速大功率柴油机的价格变化情况、各影响因素及其与船舶柴油机价格的相关性,并预测了船舶柴油机的价格走势。     

我国船用大功率柴油机产业现状及发展趋势分析

船用大功率柴油机产业的发展与船舶工业的发展直接相关,准确把握船用大功率柴油机产业现状和发展趋势对于我国建设造船强国、发展海洋经济具有重要意义。在分析我国船用大功率柴油机产业现状、存在的问题以及面临的形势的基础上,对产业发展趋势进行了预测分析。     

船用大功率柴油机技术发展和研究

介绍了船用大功率柴油机的发展现状,分析比较了降低排放及提高性能的各种技术措施,并提出了我国船用大功率柴油机的发展建议。     

《中国大功率柴油机发展研究》课题通过技术鉴定

由中国内燃机学会大功率柴油机分会和七一一研究所共同承担的《中国大功率柴油机发展研究》课题，已按计划完成，并于2000年3月15日在苏州召开了课题技术鉴定会。与会的19位领导和专家代表了我国大功率柴油机行业的主要企、事业单位一致通过了鉴定。认为：课题选题符合我国国防和经济建设的实际需要，真实地反映了我国大功率柴油机发展全貌，为军、民品开发、产业发展、投资改造、引进合作，也为迎接：“入世”挑战、制定“十五”规划、加速“国企”改革提供了科学、可靠的依据。《中国大功率柴油机发展研究》课题通过技术鉴定@汪宝兴…     

船用大功率柴油机远程在线支持系统技术研究

随着大数据时代的来临,船用大功率柴油机远程在线支持系统是我国海洋战略的必然发展方向。从总体设计和基础技术两方面分析介绍了船用大功率柴油机远程在线支持系统的研究和开发重点。指出:船用大功率柴油机远程在线支持系统对基础数据的要求非常高,必须十分重视基础数据的获取、研究及传输等,为船用大功率柴油机远程在线支持系统的开发和应用打下坚实基础。     

大功率柴油机的研究发展

本文阐述了国内外大功率柴油机的研究发展现状与趋势以及作者所在单位的研发状况与目标,并在此基础上提出了关于加快我国大功率柴油机发展步伐的建议。     

大功率高速船用柴油机主要技术参数的发展

根据国外大功率高速船用柴油机20多年发展状况,以柴油机强化指标、平均有效压力等主要技术参数为主要对象,分析并提出大功率高速船用柴油机主要技术参数的发展趋势。     

大功率柴油机常规喷射系统的发展方向

介绍了国内外大功率柴油机常规喷射系统研究的现状,分析存在的差距和提高喷射性能的关键技术,探讨了大功率柴油机常规喷射系统的发展方向。     

大功率高速机车柴油机排放控制策略

随着铁路牵引快速发展,以及绿色环保成为关注焦点,大功率、轻量化、低排放的高速柴油机越来越多地被用于内燃机车上。本文介绍在国际铁路市场上应用的大功率高速柴油机的发展现状,对于国际上几款满足严格排放要求的先进的大功率高速机车柴油机所采用的排放控制策略进行汇总整理,并根据不同阶段的排放标准进行分类,对于其中所应用的各项关键技术进行比较及适用性分析。并结合我国的现状,对我国机车用大功率高速柴油机的排放控制策略提出建议。     

对船用大功率柴油机排放控制技术的思考

阐述了柴油机控制排放的一般方法,介绍了ABB、Sulzer、Pielstick、Wartsila公司在大功率船用柴油机降低排放,特别是在控制NOx排放方面所做的工作.分析了船用大功率柴油机的特点和有害气体排放的控制要求,对我国船用大功率柴油机有害气体排放控制技术的研究提出了建议.     

The economics of hybrid power systems for sustainable desert agriculture in Egypt

Egypt has embarked on an ambitious desert land reclamation program in order to increase total food production. Energy planners for these desert agriculture locations have chosen diesel generation power technology because minimization of the initial capital cost of a power supply system is their top priority. This heavy reliance on diesel generation has negative effects on the surrounding environment including soil, groundwater, and air pollution. Although good solar and wind resource prospects exist for the use of cleaner hybrid power systems in certain desert locations, little research has been done to investigate the economic potential of such systems in Egypt’s desert agriculture sector. Using optimization software, we assess the economics of hybrid power systems versus the present diesel generation technology in a remote agricultural development area. We also consider the emission reduction advantages of using hybrid systems. Interestingly enough, optimization results show that hybrid systems are less costly than diesel generation from a net present cost perspective even with the high diesel fuel price subsidies. Since hybrids are also more environmentally friendly, they represent a strong step towards achieving sustainable desert agriculture.     

105系列直喷式柴油机新燃烧系统开发

本文研究出一种高性能柴油机燃烧系统，该系统完全是在燃烧理论和优化匹配理论的基础上，通过在缸径为105mm的柴油机上研究、试验所得。该燃烧系统在整机功率提高而耗油率减少的情况下对整机并无任何特殊的材料和加工等要求，使柴油机性能得到全面的提高，适合于大批量组织生产。     

Applying grid-connected photovoltaic system as alternative source of electricity to supplement hydro power instead of using diesel in Uganda

Uganda’s electricity sector for long has been depending on hydro as a base power source. Diesel is currently the second source of electricity which supplements the hydro power. The use of diesel has some implications; first, the price of fuel is high and therefore the energy produced is also expensive. Secondly, diesel power would not be a better option because of its immediate and long term effect on environment due to carbon emission and other pollutants that are often injected into atmosphere from diesel. This paper therefore examines the possibility of using solar PV systems as alternative to diesel as a source of electricity. The paper has also established that the tendency of depending on non-renewable sources of electricity can be minimized and at the same time reducing the cost of energy in the future.     

Autonomous WPP/HPP power system operating modes study

Today, there are centralized and decentralized energy supply areas world-wide. Centralized energy supply is provided by united energy grids which cover most habitable areas; they incorporate several types of power sources with centralized control system. Decentralized energy supply areas cover territories disconnected from power grid, and they incorporate only one type of power source.Autonomous diesel power plants (DPP) are nowadays used mainly to power decentralized consumers and consumer groups. DPP basic disadvantages are power production high cost, diesel fuel nonregenerability, greenhouse gas emission and environmental pollution. The possibility of power supply by autonomous power systems combining wind power plants (WPP) and hydro power plants (HPP) as alternative to diesel generation due to hydraulic energy storage advantages has been considered.Autonomous WPP/HPP power system is a combination of WPP, HPP with water-storage reservoir, automatic control system and switchgear, combined by power, infrastructural and data connections. Hydrogen energy storage is considered to be the second energy storage.HPP water-storage reservoir parametrization procedure considering operating specificity of HPP and WPP as a part of power system with hydraulic and hydrogen energy storage has been suggested. Mathematical models for operating modes of WPP, HPP and storage reservoir have been developed, which consider resources, technical and technological features of their performance in decentralized power supply system. Technique for determining storage reservoir backup volume with allowance for wind conditions parameters, WPP features and storage reservoir configuration have been suggested. Method of day-ahead WPP power calculation in solving problem of operational planning of power system operating modes has been suggested. Simulation of WPP/HPP power system operating modes with seasonal-storage reservoir and hydrogen energy storage have been carried out.The suggested techniques could be used for solving design problems to substantiate decentralized power supply system parameters in remote and isolated areas, as well as for evaluating energy efficiency of replacing the existent decentralized power supply systems on the basis of DPP using imported diesel fuel by environmentally safe systems on the basis of local energy resource – wind energy and hydraulic energy. The suggested techniques are also focused on solving problem of power system operating modes for operational planning.     

D683系列船用柴油机的研制开发

Ｄ６８３系列船用柴油机是在Ｄ６１１４车用型柴油机基础上,借鉴９０年代中后期国际先进船用柴油机的设计经验,由上海柴油机股份有限公司研制开发的新一代高速、轻型、低排放、节能型船用柴油机,功率范围为１５４～２０５ｋＷ,主要用作高速船艇主机,也可作为舰船辅机、发电机组动力等。本文主要介绍了该系列船用柴油机的性能研究、结构设计和研制开发的情况。     

直流配网型混合动力系统在车客渡船上的应用

针对车客渡船动力负荷切换频繁,传统柴油机推进油耗高、排放和噪声大的问题,提出一种基于变速发电机组和超级电容储能装置的直流配网型混合动力系统。目前系统已成功应用于“江苏路渡3011”轮,实船运行数据显示:该混合动力系统不仅能达到较好的节油效果、降低排放,更在操控性、舒适性上优于传统的柴油机推进模式。     

提高柴油机零件可靠性的表面强化新工艺研究

随着作为舰船、机车主要动力的柴油机不断向大功率、高负荷、高增压、低油耗和轻自重的方向发展,对柴油机零件如气缸、凸轮、传动齿轮等摩擦副的机械性能、工作可靠性等提出了更高的要求．因此,为满足这些要求而进行的材料选择、热处理工艺研究,特别是表面强化热处理工艺研究具有重要意义。     

云内4100柴油机增压中冷机型的试验研究

对4100QBZL所配用的中冷器的阻力特性和冷却性能，以及发动机的动力性，经济性排放性能进行了试验研究。试验结果表明，中冷器的阻力较小，冷却能力很强。增压中冷后发动机的动力性有较大提高，排气温度下降，增压中冷发动机的排放性能较好。     

Use of pyrolysis oil in a test diesel engine to study the feasibility of a diesel power plant concept

The economic viability of power production in a diesel power plant utilizing flash pyrolysis oil produced from sawmill wastes in Finland has been investigated. A combination of biomass feedstock costs, pyrolysis oil fuel properties (ignition quality, lubricating properties, combustion speed and duration, emissions, etc.) and their effect on power plant investments and maintenance will ultimately determine electricity busbar costs and the economic competitiveness of the concept. Pyrolysis oil is not a suitable fuel for a conventional diesel engine as such. The preliminary tests with additive treated pyrolysis oil demonstrated, however, that once ignition has taken place, pyrolysis oil burns rapidly. Pyrolysis oil may be a suitable primary fuel for a diesel engine with a pilot injection system, which secures the ignition of the main fuel.     

Study and design of a hybrid wind–diesel-compressed air energy storage system for remote areas

Remote areas around the world predominantly rely on diesel-powered generators for their electricity supply, a relatively expensive and inefficient technology that is responsible for the emission of 1.2 million tons of greenhouse gas (GHG) annually, only in Canada [1]. Wind–diesel hybrid systems (WDS) with various penetration rates have been experimented to reduce diesel consumption of the generators. After having experimented wind–diesel hybrid systems (WDS) that used various penetration rates, we turned our focus to that the re-engineering of existing diesel power plants can be achieved most efficiently, in terms of cost and diesel consumption, through the introduction of high penetration wind systems combined with compressed air energy storage (CAES). This article compares the available technical alternatives to supercharge the diesel that was used in this high penetration wind–diesel system with compressed air storage (WDCAS), in order to identify the one that optimizes its cost and performances. The technical characteristics and performances of the best candidate technology are subsequently assessed at different working regimes in order to evaluate the varying effects on the system. Finally, a specific WDCAS system with diesel engine downsizing is explored. This proposed design, that requires the repowering of existing facilities, leads to heightened diesel power output, increased engine lifetime and efficiency and to the reduction of fuel consumption and GHG emissions, in addition to savings on maintenance and replacement cost.