【作者】

Bert Ritscher

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC世界大会上发表，论文的版权归CIMAC所有。‘ The Marine Engine technology is on its way to move from pure mechanical to more and more electronic controlled engines. Common Rail and Dual Fuel is available today and Spark ignited GAS Engines are upcoming fast. With this change in technology, a lot of improvements to engine performance and emissions are achieved. On the other hand it can bring some challenges to the operator / crew in understanding the system and consequently new ways in performing troubleshooting and fault finding in case of Alarms and Diagnostics are needed.This situation becomes even worse with the slightly decreasing skills & capabilities of the onboard crew. The full paper is to deal with both, on the basis of technical and practical examples of Caterpillar engines equipped with electronic control systems and advanced technologies. Two examples are given that were realized on the M46 Dual Fuel engine: Lambda Control using electrical Servomotors for the exhaust valve actuation - Fast and accurate actuation with Servomotors enable very quick fuel changeover (GAS – Diesel – GAS) with better diagnostic clarification. In comparison to Hydrax systems, hydraulic fluid, pumps and pipes can be eliminated. Cylinder Pressure Based Control System - Provide several more degrees of freedom to enable items like Low Load GAS operation and Engine start in GAS Mode With these new control feature consequently more failure modes are added up to the overall engine system which have to be announced, addressed and understood by the operator. On the other hand, the availability of this data, e.g. real time cylinder pressure signals, are offering the possible to analyze the data over the time and compare it with historical or test-bed data. Component failures can be predicted and eventually avoided to minimize engine downtime. Caterpillar has recently introduced Asset Intelligence to help owners use automated advanced analytics and expert engineering review services to turn onboard data into actionable information that can be used to optimize when maintenance is performed, avoid equipment failures, improve vessel or equipment performance, increase fuel efficiency, or increase the overall productivity of the vessel or asset.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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