【作者】

Peter Jensen

【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 recent years’ change in the operation of two stroke marine diesel engines driven by fuel optimization and legislation of exhaust gas emissions, has been the main reason for changes in the design of the two stroke marine diesel engine. The changes are seen in the development of the electronically controlled engine, which enables higher combustion pressure, as well as engines with much longer stroke lengths for more efficient propulsion. The design changes and operation at low loads (slowsteaming) has led to increased corrosion including cold corrosion as a high priority problem. Focus is also on optimization of cylinder oil consumption, as this is a very high cost when looking at the total cost of operating a vessel (OPEX), where the recent years’ solution to challenges with cold corrosion has been to increase the consumption. The design changes, and challenges with cold corrosion have initiated a joined test between MAN Diesel & turbo, Hans Jensen Lubricators A/S and Costamare on a Costamare owned vessel. The Lubtronic SIP system was tested in different configurations against the standard MDT lubrication. The purpose was to test the Lubtronic SIP equipment on a new, long stroke, electronically controlled engine. The test was started in January 2014 and has until now, accumulated more than 6000 running hours, on a 9S90ME-C TII Mk 9.2 engine with JBB. This engine has long stroke length and high risk of cold corrosion, because of tier II compliance and part load optimization by EGB, combined with long periods with low load operation (slowsteaming). The result of the tests on the cylinders equipped with SIP and Lubtronic are remarkable in terms of cylinder lube oil consumption, liner wear and cylinder condition. There was no sign of cold corrosion on the liner surface, despite the combination of high sulphur fuel and low load operation. The conclusion is that the consumption can be lowered, while remaining good wear rates on the new and more corrosive engine designs. Based on the findings, test managed by MDT on another new build vessel has been initiated. The test was specified by MDT. MDT carried out all the easurements. The paper will be authored by MAN Diesel and Turbo, Hans Jensen Lubricators A/S and Costamare. The paper will discuss and describe the test setup, go into detail about the test results and conclusion.

【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

返回