外国公司的官网——高端大气上档次

扫街

EPI公司是由英国罗罗公司、德国MTU公司、西班牙ITP公司和法国的赛峰集团联合组建的合资公司，其中赛峰、罗罗和MTU各占28%的股份。欧洲空客军事公司和A400M运输机的TP400发动机供应商

http://www.epi-eng.com/epi_general_information/summary_epi_specialties.htm

solidworks建模的发动机

实物


We begin by analyzing the requirements of a system with basic engineering procedures. We use hand calculations, purchased software (such as our Computational Fluid Dynamics package for aerodynamic bodies and passages, our Piston Engine Simulation package, the results of which typically match dyno test results within 3-5%), as well as software designed and developed in-house for the analysis of vibration and resonance, dynamic loading in geared systems, spline loadings, flight loads, and many other specialized areas.

Using constraints and requirements developed from preliminary analysis, we design components, assemblies and systems using powerful3D-CADmodeling software(SOLIDWORKS?), followed by detailedFinite Element Analysis(COSMOS?)to determine the stresses and strains components will endure under the expected loadings. This cycle is repeated until a suitable level of performance and reliability can be predicted from the analysis.
We also provide top-grade3D-CADmodelling,Finite Element Analysisof components,Engineering Drawings, andTechnical Writingservices for clients. We guarantee complete confidentiality of client data, products and ideas.
EPI has years of successful experience in High Performance Engine Development. We use our in-house analysis and testing equipment to develop cylinder heads, manifolds, valvetrain systems, lubrication systems, and accessory systems.
Our Simulation Package uses the properties of the actual engine components (measured port and manifold airflow data, measured cam lobe data, measured valvetrain mass and deflection properties, reciprocating component masses and geometries, etc.) to predict the performance of a specific configuration. DYNO-testing verifies the performance and reliability of the configuration. Software predictions of engine performance often correlate to dyno measurements within 3 percent, and rarely deviate from dyno results by more than 5%. (Larger deviations are almost always the result of bad data in the simulation.)

We offer improvements in the flow level and flow quality for ports and combustion-chambers, detailed measurements of volume-flow vs. valve lift, port velocity-profile mapping, measurement of in-cylinder charge swirl, and mapping and improvement of boundary layer separation, especially on port floors and short-turn radii.
We use aSuperFlowSF-600 Airflow Measurement System with an integrated, fully-computerizedAudie TechnologyData Acquisition System. Those systems together provide highly repeatable measurements and recording of bidirectional volume-flow, cross-sectional velocity profiles, and charge swirl. The data acquisition software provides comprehensive graphical and textual report formats.
不过最让人口水直流的就是工程师的办公室


点评：
洋人当然用三维，也用有限元，但人家更有完美的试验测量系统。

mecheng

中国人用来画图，外国人用来设计。

mecheng

飞机上用活塞机？不都是喷气机吗？

原谅我今天

人家国外做FEA都是靠大量实验数据做支撑的，人家的研发成本很大一部分也是花在试验上的。

黄亨瑞

V12四涡轮，
Supercar的发动机呀！

黄亨瑞

电脑硬件差别不会太大。
9年前，
天津一家工装设计公司，
就一个人两个大液晶。

zerowing

罗技的M510无线鼠和XX无线键盘。促销价50刀。哈哈哈
这个显示器有点意思，俺想知道这什么显卡有三个输出口

无独有偶

现在A160小型机售价160W，包教包会，学好以后可以给土豪朋友当司机了。
想学的可以联系我，哈哈！！

（丁）寂寞的心

我想知道这个曲轴的材料不会也是铝合金的吧，曲轴铸造出来怎么加工的，一次装夹能实现全部加工吗？两次装夹的定位精度怎么保证，中国能搞这玩意吗？

zdd5254

国内公司和国外公司 内部资源的配备问题和人员的差别