Available technologies

Centrifugal Compressor Inlet Duct Device for Improved Flow Range

Reference number: 6467


Current turbocharger designs suffer from a flow range limitations that lead to inefficient turbocharger compressor and turbine choices. Enhanced range, coupled with to high boost pressure, is essential to achieve low fuel consumption in internal combustion engines. This new innovative compressor inlet invention increases substantially compressor flow range with the user of an inlet duct that pre-swirls the inlet flow of the turbocharger compressor.
Flow range limitations often lead to multi-stage compressor systems that make the installation bulky and complex. This concept creates the opportunity to reduce cost by using a single stage turbocharger or possibly by eliminating the need for a variable geometry turbocharger.
Simulation indicates a 26% decrease in surge mass flow rate, whilst limiting the decrease in choked mass flow to a small negative change of 2.8%. Consequently the turbocharger transient response could be improved by up to 18%.

It is considered that this technology will be applicable across the whole range of turbo and super charger applications from automotive through to large static power and marine applications. Imperial internal funding has supported the research in computational fluid dynamic (CFD) modelling to date with fully validated methods.

Leading the team at Imperial is Prof Ricardo Martinez-Botas , one of the world’s foremost authorities on fluid dynamics in turbochargers.

Intellectual Property

The IDT concept is patented by Imperial Innovation (published WO2014181119).

Next Steps

The team at Imperial are now seeking investment and/or industrial partners to assist in development of the new turbocharger through aerodynamic flow testing, transient dynamometer and in vehicle testing.


Laura Cabo-Fernandez

Industry Partnerships and Commercialisation Officer, Engineering


+44 (0)20 7594 5246

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