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本帖最后由 扫街 于 2014-7-9 20:51 编辑
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 powerful 3D-CAD modeling software (SOLIDWORKS™), followed by detailed Finite 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-grade 3D-CAD modelling, Finite Element Analysis of components, Engineering Drawings, and Technical Writing services 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 a SuperFlow SF-600 Airflow Measurement System with an integrated, fully-computerized Audie Technology Data 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。
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发表于 2014-7-9 20:39:15
