24. 五月 2017

“FEV Virtual Engine 25.1”: Dynamic simulation with extended functionality

FEV software allows high-precision two-sided elasto-hydrodynamics, wear prediction and extended timing drive chain friction analysis

FEV Virtual Engine 25.1 offers significant enhancements for elastohydrodynamic (EHD) journal bearing and piston-liner simulation as well as an advanced friction analysis for chain drives (Source: FEV Group GmbH)

Aachen-based engineering service provider FEV has launched a new release of its "FEV Virtual Engine” 3D powertrain dynamics simulation software. Version 25.1 offers significant enhancements for elastohydrodynamic (EHD) journal bearing and piston-liner simulation as well as an advanced friction analysis for chain drives.

“With the new release, we have added important functionality to FEV Virtual Engine that allows significant test cell development work to be replaced by simulation”, explained Professor Stefan Pischinger, president and CEO of the FEV Group. “Virtual Engine enables rapid and reliable predictions of drivetrain dynamics, resulting in dramatic reductions in the required development time.”

Since its introduction in 2008, the innovative, template-based FEV Virtual Engine software has combined the advantages of easy-to-use, special-purpose software with the performance of a universal, extensible dynamic simulation software tool.

"Virtual Engine’s extensive modeling options enable not only the analysis of every component in conventional powertrain drive systems, but it also includes simulation of new and innovative alternative designs such as start / stop systems, hybrid drives, transmissions and drivelines", said Mustafa Duyar, Product Business Manager for FEV Virtual Engine.

EHD analysis with even enhanced performance
Additionally to the proven one-sided elasto-hydrodynamic approach, the analysis now includes a two-sided elasto-hydrodynamics, so that the local deformations of both, the journal and bearing surfaces are calculated. This is particularly important for journal designs with lower stiffness such as hollow journals or piston pins.

The advanced two-sided EHD analysis is also applicable to piston and liner during the piston secondary dynamics simulation. With the advanced wear analysis, the wear of both, the bearing and journal surface can be evaluated. Additionally, the advanced wear analysis is capable to eliminate material from the bearing and journal surfaces during the dynamic analysis which allows to mimic the effect of real wear. The shape modification resulting from material removal can help to rate the durability of the journal bearing.

Extended Timing Drive Chain Friction Analysis
The friction model of chain drive elements has been extended with a viscous friction model. Chain Friction Analysis now covers the combination of internal and external chain friction results to assess the total timing chain drive friction. Total friction can be calculated over a user-defined simulation time interval.

Automatic Optimization of Valve Lift
Automatic optimization of the valve lift curve to maximize the gas exchange is now available for roller finger follower and rocker type valvetrains. Further optimization options will follow with the next release.

关于FEV
总部位于德国亚琛的FEV集团是一家独立的国际领先、拥有自主整车及动力总成软硬件开发能力的服务供应商。可以提供从概念设计到最终量产的全部咨询、开发、测试等服务。

整车开发提供的服务包括:车身和底盘设计,包括驾驶性和NVH在内的车辆整体性能调校。FEV还可开发新型车辆照明系统,为自动驾驶和车联网提供解决方案。动力总成电气化服务涵盖动力电池系统,电动机和逆变器。此外,FEV还开发高效汽油和柴油发动机、变速箱、EDU和燃料电池系统,以及车辆集成,使其适合用于认证使用。可替代燃料也是开发的另一个重点。

我们还提供定制测试台架、测量技术和软件解决方案,从而可以有效地将上述所需的必要开发步骤从道路转移到测试台和计算机仿真环境中。

FEV集团目前在五大洲建立40余处客户导向的研发机构,拥有###EMPLOYEES##多名技术专家,为全球客户提供上述服务。"进军中国“是FEV集团二十多年重要战略目标之一。从2004年起,相继在大连、北京、上海、武汉、重庆、广州等地建立分公司或办事处,为中国客户提供德国制造服务。