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Powertrain NVH Testing – Efficiency x 4

Siemens Visionary Siemens Visionary
Siemens Visionary

Fuel efficiency, performance, engine downsize…how many changes do new car models have to undergo and how complex has powertrain become nowadays? And what are the solutions to meet the modern demands in the best way?

Engineers at Siemens PLM Software have developed a single, comprehensive powertrain solution for  engines that  balances performance, fuel economy and Noise Vibration Harshness (NVH) alike. Four historically separate measurement systems have now become one. It combines traditional NVH with torsional vibration analysis, combustion analysis and ability to access to powertrain ECU .

Torsional vibration analysis (TVA) is a vital part of the overall solution. This aims to discover uneven RPM fluctuations and unsteadiness coming from the engine and from powertrains and to measure them in parallel with NVH. The solution allows to get any torsional vibration sensor to be connected and to analyse and animate the acquired data.

To get an understanding of how the NVH links to the powertrain performance, combustion analysis is provided.  Combustion analysis helps measure the powertrain’s performance. With this,  all major metrics, such as IMEP, PV diagram, pressure rise rate, etc. can be obtained

Last but not least, access to the powertrain Electronic Control Unit (ECU) is provided through support of CAN Calibration Protocol (CCP), for instance.  This is important as performance-enhancing control strategies often conflict with NVH, and by acquiring the ECU parameters together with NVH the users gain insight into how they interlink.

Addressing the needs of all departments involved is a huge challenge and this approach certainly facilitates the way to making informed decision at the earliest stages and throughout the development process.

Bart Verrecas, Automotive Business Development Manager for NVH testing at Siemens PLM Software, guides you through the advantages of using such a solution and what it brings to your engineering departments. Watch the video for more in-depth explanation.