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Cummins Turbo Technologies applied Advanced Design Technology (ADT)’s Turbodesign1, a 3D inverse design code, for the development of next-gen centrifugal compressors for turbocharger applications.

Turbocharged diesel engine’s fuel consumption is directly influenced by the turbocharger efficiency through the engine’s pumping cycle work.

This means that the more efficient the turbomachinery, the less work done by the engine during the pumping cycle, resulting in better engine brake-specific fuel consumption (BSFC).

Compressor efficiency has a direct impact on engine BSFC and is one of the areas recently targeted by Cummins Turbo Technologies to enable engine manufacturers to meet strict emissions criteria and performance requirements.

Dr Bahram Nikpour of Cummins Turbo Technologies said: ‘This work confirms that in many turbocharger compressor applications higher performance is only possible by using 3D blade profiles.

‘Turbodesign1 provides the means of rapidly designing 3D centrifugal compressor blades with high performance.’ The case study highlights the current limitations of conventional design methods by comparing a centrifugal compressor impeller against a new generation of fully 3D compressor wheels obtained by the inverse design methodology, which deliver up to three points higher efficiency over the whole operating range.

Advanced Design Technology

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