Pre­serving Oper­a­tion­al Reli­ab­il­ity in Large-Sized Engines

Reli­ab­il­ity as a basic re­quire­ment for large en­gines

The de­vel­op­ment of large-sized en­gines fo­cuses not only on fuel sav­ings but above all on high re­li­ab­il­ity. Today, large en­gines are used as mar­ine en­gines or in sta­tion­ary ap­plic­a­tions as emer­gency power gen­er­at­ors in hos­pit­als and com­puter cen­ters. In com­par­is­on to the sta­tion­ary ver­sion, how­ever, ship en­gines have ex­tremely high de­mands on op­er­a­tion­al safety and re­li­ab­il­ity. Ro­bust en­gines are re­quired that can with­stand all mari­time ad­versit­ies.

Vibra­tions in Continu­ous Oper­a­tion

Chal­lenges in large-sized en­gines

Due to the con­tinu­ous op­er­a­tion of mar­ine en­gines, great im­port­ance is at­tached to a long ser­vice life of the en­gine in order to keep op­er­at­ing costs as low as pos­sible in the long term. Poten­tial dam­age to the en­gine, for ex­ample due to ro­ta­tion­al vi­bra­tions, res­ults in costly and time-con­sum­ing re­pairs. Equally im­port­ant is a high level of op­er­a­tion­al safety and re­li­ab­il­ity. Even the smal­lest error can have ser­i­ous con­sequences. If the en­gine fails, the ship's in­ab­il­ity to man­euver and loss of sta­bil­ity are po­ten­tial con­sequences. This must be pre­ven­ted. Rota­tion­al vi­bra­tions in all ro­tat­ing com­pon­ents, such as crank­shaft and pro­peller shaft, are re­garded as tech­nic­ally par­tic­u­larly rel­ev­ant causes of po­ten­tial dam­age. Above all, the non cyc­lic­al ap­plic­a­tion of force to the stroke move­ment of the pis­ton causes an ex­cit­a­tion of the tor­sion­al vi­bra­tion. The use of flex­ible coup­lings is only of lim­ited help here.

Meas­ure­ment and Ana­lys­is Tech­no­logy to En­sure Oper­a­tion­al Safety

Our solu­tion for large-sized en­gines

A mon­it­or­ing sys­tem that iden­ti­fies dan­ger­ous vi­bra­tion con­di­tions ahead of time and ini­ti­ates meas­ures to pro­tect the en­gine be­fore ser­i­ous dam­age oc­curs.

Our sys­tem solu­tion, the IfTA Ar­gusOMDS, in com­bin­a­tion with the high-res­ol­u­tion AT2 input mod­ule and the ana­lys­is soft­ware IfTA TrendView­er, of­fers in­di­vidu­ally ad­apt­able solu­tions for the safety of large en­gines. It en­ables angle-re­lated eval­u­ations of ro­ta­tion­al and tor­sion­al vi­bra­tions in real-time. Based on ex­cel­lent hand­ling of large amounts of data, such as those gen­er­ated in long-term meas­ure­ments of con­tinu­ous motor op­er­a­tion, crit­ic­al vi­bra­tions can be iden­ti­fied and meas­ures taken to pro­tect the motor.

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