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资料1：《中文操作说明和视频操作汇编》199元/份、含近100个视频及船舶主要设备2500多份中英文说明书及PPT教程，支持手机阅读，容量约28G. 资料2：《船舶讲武堂年刊第一季》、原价299/份（微店折扣价239），含电喷主机48篇、常规主机、各机型副机、及45篇付费文章，共计约378篇。 推荐上面2个资料合并购买（含2个32G的U盘）：现只需388元（可省50元），扫描下方识别码进店，立享优惠！不方便的弟兄可加微信：18680871406，自行前往百度网盘下载。 山东聊城和广州均可发货，疫情无忧！ 扫码进店，立享优惠！ 一、PMI 系統的設計目的 1 The design intention of the PMI system  简言之，PMI 系统有助于改善主机工况，提升燃油经济性，发现主机运转过程之中的异常。经过长时间发展及改进，目前PMI系统已经成为ME主机的标配。 In a word, the PMI system is beneficial to improve the performance condition of main engine, improve fuel economy, and find abnormalities during the main engine running. After a long period of development and improvement, the PMI system has already been the standard configuration of the ME engine. 二、PMI 系统简介 2 Introduction to PMI system Pmax sensor  Pmax 目前一共应用2款，分别为ABB及Kistler生产，如上图，ABB宣称不需要定期做calibration，设计上ABB sensor与示功考克一体，不可单独更换。Kistler理论上满足加装要求，sensor与示功考克分开设计，按照Kistler要求，calibration週期为4~6月/次，IMO要求该sensor每年至少calibration一次，因此，船上目前安装的多为Kistler版本。 Pmax is currently set 2 types, which are manufactured by ABB and Kistler . As above photo shown, ABB claims that there is no need for regular calibration during overall life cycle . The ABB type is integrated design with indicator cock, and cannot be replaced separately. Kistler satisfied theoretically the requirements of modification. The sensor and the indicator are designed separately. As Kistler`s instruction, the calibration cycle should been under 4-6 months. IMO requires the sensor should be calibrated annually. Therefore, the most versions choice were found be Kistler version. 根据SL-621, Pmax sensor外部包裹有保温防护层，若丢失保温层，sensor暴露于外部环境中，外部温度过低，易导致低温腐蚀，损坏sensor，所以，外部保温层非常重要，不可丢失； As SL-621 shown, the Pmax sensor is wrapped with insulation layer. If the insulation layer is lost, the sensor is exposed to the external environment. If the external temperature is lower than inner space, is's easily found damaged which caused by low-temperature corrosion, Therefore, the external insulation layer is very important and cannot be lost. 根据SL-658，主机运转过程中，千万不可打开示功考克，即使考克漏气也不被允许，否则极有可能导致Pmax sensor损坏，offline设备使用时，必须先接好coupling再开启考克，日常运转中，考克的cover螺帽保持关闭。 As SL-658 shown, the indicator cock should never be opened during the engine is running even if the cock leakage, otherwise it is very likely to damage the Pmax sensor. During the offline device connected, you have to connect the coupling firstly, then turn on the cock, the cover nut of cock should be closed during daily operation. 故，主机启动时，示功阀开启，不可选用Air Run吹车，只能选用slow turn吹车，况且从安全角度讲，主机吹车尤其是长时间不动主机情况下，吹车应当选用slow turn，时间及次数可适当多一些，关于slow turn吹车耗费空气量大的说法，有一定的根据，但只是表明操作者吹车时想达到主机发火转速，小流量slow turn阀，大流量示功考克洩气，耗气量肯定大一些（相同执行时间下，slow turn耗气量小一些）但吹车的目的不在转速，而在于主机目前转动正常，缸内无异物，具备起车条件而已，slow turn才是正确的吹车方式。 In conclusion, during the main engine prepared standby cycle, the indicator valve is opened. Do not blow the engine with “Air Run” mode, only “Slow Turn” mode should be carried out. Moreover,the main engine should carry out blowing the engine with slow turn mode under long time engine stay , The operating times and blowing period can be kept longer appropriately. There is a certain basis for the argument that slow turn blowing will consumes more air, but it only indicates that the operator wants to reach the ignition revolution of the main engine during engine blowing, the less flow slow turn valve with indicator cock vented, the blowing air consumption may be larger (the air consumption were less than Air run under the same execution time with same operating period), but the purpose of engine blowing were not revolution speed, it should be confirmed no foreign matter in the cylinder liner space and rotation system in normal condition, finally confirmed the engine preparation for starting were available. The correct mode of engine blowing should been in slow turn. 3 Balanced plot, Pmax-Pcomp    Fuel Index Adjustment：Fuel index调整改变油门及FO timing，不推荐用来改变排温。 Fuel Index Adjustment: Fuel index adjustment changes the index value and FO timing. It is not recommended to change the exhaust temperature.  Pmax、Pcomp Adjustment  PMI Auto-tuning PMI Auto-tuning 必须基于以FQA调整主机MOP显示负荷（设定负荷）与PMI计算所得实际负荷相等！ PMI Auto-tuning 目的在于控制排放及降低油耗，Pmax 增加1bar，油耗降低0.2~0.3g/kwh. PMI Auto-tuning must be based on adjusting the engine MOP display load (set point) with FQA to be equal to the actual load calculated by PMI(estimated load)! The purpose of PMI Auto-tuning is to control emissions and reduce fuel consumption. Pmax is increased by 1 bar and fuel consumption is reduced by 0.2~0.3g/kwh. CoCoS-EDS: 早期的版本（basic）不能与别的系统通讯，后期的系统相当于主机的VDR，可以备份所有主机运转的alarm及正常数据，为远程数据分析提供了基础。 The early version (basic) cannot communicate with other systems. The later version is equivalent to the engine's VDR, which can back up all the alarms and normal data of the engine's operation, providing a basis for remote data analysis. |
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