Vi­bra­tional Be­hav­ior of Engines on the Test Bench

Op­ti­miz­ing en­gine longevi­ty and fuel con­sump­tion

De­spite the lat­est pos­si­bil­i­ties to sim­u­late and test the op­er­at­ing be­hav­ior of en­gines using com­put­er tech­nol­o­gy meth­ods (e.g. the fi­nite el­e­ment method), en­gine test bench­es make a de­ci­sive con­tri­bu­tion to en­gine de­vel­op­ment. Espe­cial­ly in fol­low-up tests, be­hav­ior anom­alies of the en­gine com­po­nents can be di­rect­ly iden­ti­fied and in­ter­pret­ed. The pre­ven­tion of acous­tic vi­bra­tions and ro­ta­tion­al vi­bra­tions are the key words in this con­text. The re­sults ob­tained serve as the basis for adapt­ing the de­sign pa­ram­e­ters of the en­gine com­po­nents and as­sem­blies in order to op­ti­mize fac­tors such as dura­bil­i­ty, fuel con­sump­tion and pol­lu­tant emis­sions. In test runs over long pe­ri­ods high de­mands are placed on pre­cise mea­sure­ment and anal­y­sis tech­nol­o­gy.

Pre­cise Anal­y­sis of Vi­bra­tion Con­di­tions

Chal­lenges on en­gine test bench­es

Per­form­ing test se­ries is cost­ly and time-con­sum­ing. For this rea­son, the ques­tion of cost-ef­fec­tive­ness is all the more im­por­tant. Mean­ing­ful re­sults from high-res­o­lu­tion mea­sure­ment data are es­sen­tial. The main chal­lenges to be faced are the com­plex anal­y­sis of tor­sion­al vi­bra­tions on the one hand and the han­dling of the large data sets gen­er­at­ed in the test se­ries on the other. Ro­ta­tion­al or tor­sion­al vi­bra­tions occur due to the acycli­cal force trans­mis­sion of the pis­ton move­ment into the crank­shaft and in­flu­ence the op­er­at­ing be­hav­ior of all down­stream el­e­ments.

Un­com­pro­mis­ing Mea­sure­ment and Anal­y­sis Tech­nol­o­gy

Our So­lu­tion

A mea­sure­ment and anal­y­sis sys­tem that can an­a­lyze high-res­o­lu­tion in­for­ma­tion quick­ly and un­com­pro­mis­ing­ly.

The IfTA sys­tems, in com­bi­na­tion with the AT2 input mod­ule and the anal­y­sis soft­ware IfTA TrendView­er, offer the op­ti­mum so­lu­tion with­out com­pro­mise, es­pe­cial­ly for the high de­mands of en­gine test bench­es on mea­sure­ment and anal­y­sis sys­tems. High-res­o­lu­tion angle-re­lat­ed eval­u­a­tions of tor­sion­al and tor­sion­al vi­bra­tions in real time are pos­si­ble. The pro­cess­ing of large amounts of data is also no prob­lem. Be­cause on the basis of con­tin­u­ous data stor­age, no high-res­o­lu­tion raw data is lost and at the same time a high level of clar­i­ty is main­tained by sum­ma­rized data.

Rec­om­mend­ed Prod­ucts

High Speed Timer AT2

Flex­i­ble and fast timer mod­ule with two ana­log in­puts.


Pro­tec­tion sys­tem with di­ag­nos­tic and mon­i­tor­ing func­tion­al­i­ty.


Di­ag­nos­tic tool for high-speed anal­y­sis & in­tel­li­gent vi­su­al­iza­tion.


Fast & in­­­tu­it­ive on­­line/of­f­­line ana­lys­is soft­­ware for ef­­fi­­cient vi­su­al­iz­a­­tion.