Internal combustion engine vibratory and acoustic behaviour is very complex, consisting of many components, which are the subject of the charges, which vary widely in scope, and which operate on a wide range of speeds. TU5JP engine are used at the moment a number of vehicle platforms produced by PSA, including successful "Super mini" class car, Citroen Saxo. Block, head and transmission was built by the predominantly low-order hexahedral elements, while ancillaries was modeled by using a combination of high order tetrahedral, shell and beam elements when it is appropriate. The technical approach detailed here is representative of the Ricardo's standard methods for the analysis of Powertrain to optimize its noise and vibration properties. Modal analysis, dynamic load calculation, excitation loads acting on the engine was calculated using ENGDYN. ENGDYN be used to predict the time-domain response coupled crank train and cylinder block system with nonlinear oilfilms by each of the main journal bearings 3-dimensional vibration. Forced response and acoustic analysis. original design and the difference chart compares the two. These figures reflect negligible improvement due to this change. External rib rejoin Driveshaft side of the engine.
download