The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100) in a vehicle (800). The turbocharger system (10) comprises a turbocharger turbine (22) operable by exhaust gases from the exhaust manifold, and a tank (40) with pressurized gas. The tank is fluidly connectable to the turbocharger turbine. The method comprises the steps of: predicting the coming drive conditions of the vehicle, injecting pressurized gas from the tank to drive the turbocharger turbine such that the turbocharger turbine is at least partly driven by the pressurized gas, in response to the predicted drive conditions, and/or charging the tank with pressurized gas in response to the predicted drive conditions, wherein the predicted drive conditions are indicative of the need for injection of pressurized gas from the tank.

An internal combustion engine having at least one cylinder that has a main combustion chamber for burning a fuel/air mixture or a fuel/air/exhaust gas mixture and has a flushed prechamber connected to the main combustion chamber via at least one overflow duct on the fluid side. At least one exhaust gas turbocharger is provided that has a turbine for the expansion of the at exhaust gas leaving the at least one cylinder and a compressor for compressing fresh air or a fresh air/exhaust gas mixture to be supplied to the at least one cylinder as compressed charge-air. In a charge-air line downstream of the compressor, an extraction point is formed from which a flushing line branches off, via which a partial amount of charge-air of the compressed charge-air for flushing the at least one prechamber can be extracted.

An engine includes an intake, an air-fuel path coupled to the intake, an accumulator configured coupled to the air-fuel path and configured to store an air-fuel mixture, and at least one valve configured to selectively provide the air-fuel mixture from the engine to the accumulator at a first time and store the air-fuel mixture within the accumulator at a second time. A controller may be configured to provide commands to the at least one valve. The plurality of commands may include an open command to release air and fuel mixture from the accumulator and a close command to store air and fuel mixture in the accumulator.

The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100). The turbocharger system comprises a tank (40) with pressurized gas, and a turbocharger turbine (22) operable by exhaust gases from the exhaust manifold. The tank is fluidly connectable to the turbocharger turbine. The method comprises the steps of: determining a first operational mode in which zero fuel, or only a predetermined low amount of fuel, is injected to the combustion engine, for a predetermined time period; and, after the predetermined time period, injecting pressurized gas from the tank to drive the turbocharger turbine, such that the turbocharger turbine is activated by the pressurized gas.

The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100). The turbocharger system comprises a tank (40) with pressurized gas, and a turbocharger turbine (22) operable by exhaust gases from the exhaust manifold. The tank is fluidly connectable to the turbocharger turbine. The method comprises the steps of: determining a first operational mode in which zero fuel, or only a predetermined low amount of fuel, is injected to the combustion engine, for a predetermined time period; and, after the predetermined time period, injecting pressurized gas from the tank to drive the turbocharger turbine, such that the turbocharger turbine is activated by the pressurized gas.

A turbocharger system (1) of a combustion engine (4) comprises a turbocharger turbine (5) operable by exhaust gases, a valve (7) configured to control gas flow of pressurized gas from a pressurized gas reservoir (6) to the turbocharger turbine (5), and a sensor (8). Turbocharger system operation comprises injecting a test pulse of pressurized gas from the pressurized gas reservoir (6) to drive the turbocharger turbine (5) by means of controlling the valve (7), detecting an impact of injected pressurized gas on the turbocharger turbine (5) by means of the sensor (8), collecting data from the sensor (8), and diagnosing the turbocharger system (1) by evaluating an operational response of the turbocharger turbine (5) as a result of the injected test pulse of pressurized gas, based on the collected data.

A turbocharger system (1) of a combustion engine (4) comprises a turbocharger turbine (5) operable by exhaust gases, a valve (7) configured to control gas flow of pressurized gas from a pressurized gas reservoir (6) to the turbocharger turbine (5), and a sensor (8). Turbocharger system operation comprises injecting a test pulse of pressurized gas from the pressurized gas reservoir (6) to drive the turbocharger turbine (5) by means of controlling the valve (7), detecting an impact of injected pressurized gas on the turbocharger turbine (5) by means of the sensor (8), collecting data from the sensor (8), and diagnosing the turbocharger system (1) by evaluating an operational response of the turbocharger turbine (5) as a result of the injected test pulse of pressurized gas, based on the collected data.

A method for controlling a turbocharger system fluidly connected to an exhaust manifold of a combustion engine and an exhaust after treatment system. The turbocharger system comprises a turbocharger turbine operable by exhaust gases from the exhaust manifold, and a tank with pressurized gas, the tank being fluidly connectable to the turbocharger turbine. The method comprises the steps of: determining a NOx parameter being indicative of, or correlated to, NOx emissions from the exhaust after treatment system; and injecting pressurized gas from the tank to drive the turbocharger turbine based on the determined NOx parameter, wherein a determined NOx parameter above a pre-defined first threshold determines that pressurized gas from the tank is injected.

The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100) in a vehicle (800). The turbocharger system (10) comprises a turbocharger turbine (22) operable by exhaust gases from the exhaust manifold, and a tank (40) with pressurized gas. The tank is fluidly connectable to the turbocharger turbine. The method comprises the steps of: predicting the coming drive conditions of the vehicle, injecting pressurized gas from the tank to drive the turbocharger turbine such that the turbocharger turbine is at least partly driven by the pressurized gas, in response to the predicted drive conditions, and/or charging the tank with pressurized gas in response to the predicted drive conditions, wherein the predicted drive conditions are indicative of the need for injection of pressurized gas from the tank.

The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100). The turbocharger system (10) comprises a turbocharger turbine (22) operable by exhaust gases from said exhaust manifold, and a tank (40) with pressurized gas, said tank being fluidly connectable to said turbocharger turbine. The method comprises the steps of: determining an engine operational mode in which the combustion engine runs below a predetermined speed, determining an external load requiring engine torque which at said engine operational mode would cause the combustion engine to stall, and subsequently injecting 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 the combustion engine.