Press Release: Compressor Closed Loop

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Audrey Riberon

Compressor Closed Loop

Further adding to our center’s turbo testing scope is a compressor Closed Loop that was recently implemented.

Turbocharger manufacturers seek to improve their products more and more, notably in transitory phases on turbine side.

To facilitate simulations and models’ validation, one of the ideas is to find artifices to widen the distribution of the so known Blade Speed Ratio versus Turbine & Mechanical Efficiency curve.

The CRITT M2A solution is to use specific equipment called Compressor Close Loop whose functioning principle is based on the energy balance between compressor and turbine stage. This implying that, varying the aerodynamic load of the compressor, a variation on the working point of the turbine stage has to be expected.

The device allows therefore, on the one hand, to laminate the compressor air mass flow through entering the stage and, on the other hand, inversely, to boost it with air supplying. Compressor inlet total and absolute pressure can so be varied from 500 hPa up to 3000 hPa. Inlet temperature can also be controlled the range of 20/80 °C.

Taking into account the possibility of changing compressor inlet condition, other possible utilizations should be taken into account. Just think for a moment to the opportunity of simulating a two-stage turbocharger or an additional compressor working upstream to the unit under test.

Located in Northern France, CRITT M2A is an independent Research and Development center dedicated to the automotive industry. The center has been recognized by its customers as one of the leading turbocharger testing facilities in Europe and Worldwide.

As an organization, the center has been set up to always focus on the needs of customers and as such, is always on the lookout for new partners for technical cooperation. CRITT M2A is in constant evolution to improve its test facilities and competencies in order to keep up to date with new market trends and innovations.

Critt M2A will be at our 5th International Conference on Advanced Downsizing and Turbocharging in Wiesbaden, Germany. The conference takes place from March 18 - 20.

For more information about the conference click here


Company information according to § 5 Telemediengesetz
IQPC Gesellschaft für Management Konferenzen mbH
Address: Friedrichstrasse 94, 10117 Berlin
Tel: 49 (0) 30 20 913 -274
Fax: 49 (0) 30 20 913 240
Registered at: Amtsgericht Charlottenburg, HRB 76720
VAT-Number: DE210454451
Management: Silke Klaudat, Richard A. Worden, Michael R. Worden

Firmeninformationen entsprechend § 5 Telemediengesetz
IQPC Gesellschaft für Management Konferenzen mbH
Adresse: Friedrichstrasse 94, 10117 Berlin
Telefonnummer: 030 20913 -274
Fax: 49 (0) 30 20 913 240
Email Adresse:
Registereintragungen: Amtsgericht Charlottenburg HRB 76720
Umsatzsteuer- Indentifikationsnummer DE210454451
Geschäftsführung: Silke Klaudat, Richard A. Worden, Michael R. Worden