Abstract: A compact flow control valve capable of providing long service life in a very hostile environment. The valve is a mono or dual coaxial slider valve capable of controlling two different functions sequentially, at least one of the functions being controlled progressively. The flow control valve controls the fluid connection between two volutes (6, 7) of a turbine housing (2) of a turbocharger as well as the fluid connection between the two volutes (6, 7) of the turbine housing (2) of the turbocharger and a waste gate port (9).

Abstract: A compact flow control valve capable of providing long service life in a very hostile environment. The valve is a mono or dual coaxial slider valve capable of controlling two different functions sequentially, at least one of the functions being controlled progressively. The flow control valve controls the fluid connection between two volutes (6, 7) of a turbine housing (2) of a turbocharger as well as the fluid connection between the two volutes (6, 7) of the turbine housing (2) of the turbocharger and a waste gate port (9).

Abstract: A method for detecting, avoiding and/or limiting critical operating states of an exhaust gas turbocharger which is operatively connected to a control unit, with the following method steps: a) estimating calculation of an axial thrust (FAX) on the basis of geometric variables of the exhaust gas turbocharger (1) and on the basis of signals and controlled variables of the control unit (2); b) determining a current load of an axial bearing (9) of a charger shaft (8) of the exhaust gas turbocharger (1) on the basis of the calculated axial thrust (FAX); and c) if appropriate, executing control interventions as a function of the determined axial bearing load.