Method for controlling a turbocharger system for a combustion engine and a turbocharger system for use together with a combustion engine

A method for controlling a turbocharger system fluidly connected to an exhaust manifold of a combustion engine, wherein said combustion engine is in operative connection with a power take-off arrangement, said turbocharger system comprising a turbocharger turbine operable by exhaust gases from said exhaust manifold, and a tank with a pressurized gas, said tank being fluidly connectable to said turbocharger turbine, said method comprising the steps of:

• determining, when the combustion engine runs below a predetermined speed, a predicted external load from said power take-off arrangement requiring engine torque, and in response to said external load from said power take-off arrangement, injecting the pressurized gas from said tank to drive said turbocharger turbine such that the turbocharger turbine is at least partly driven by said pressurized gas, thereby preventing stalling of said combustion engine.

A turbocharger system for use together with a combustion engine having an exhaust manifold, said turbocharger system comprising:

• a turbocharger turbine operable by exhaust gases from said exhaust manifold, a tank comprising a pressurized gas, said tank being fluidly connectable to said turbocharger turbine, and a control unit characterized in that the control unit is configured to determine an engine operational mode in which the combustion engine runs below a predetermined speed, determine, when the combustion engine runs below the predetermined speed, a predicted external load requiring engine torque which at said engine operational mode would cause the combustion engine to stall, and subsequently initiate injection of the pressurized gas from said tank to drive said turbocharger turbine such that the turbocharger turbine is at least partly driven by said pressurized gas to prevent stalling of the combustion engine.

A turbocharger system for use together with a combustion engine having an exhaust manifold, said combustion engine being in operative connection with a power take-off arrangement, wherein said turbocharger system comprises:

• a turbocharger turbine operable by exhaust gases from said exhaust manifold, a tank comprising a pressurized gas, said tank being fluidly connectable to said turbocharger turbine, and a control unit characterized in that the control unit is configured to determine an engine operational mode in which the combustion engine runs below a predetermined speed, determine, when the combustion engine is in said engine operational mode in which the combustion engine runs below the predetermined speed, a predicted external load from said power take-off arrangement requiring engine torque, and in response to said external load from said power take-off arrangement, initiate injection of the pressurized gas from said tank to drive said turbocharger turbine such that the turbocharger turbine is at least partly driven by said pressurized gas to prevent stalling of the combustion engine.