Abstract: A method for coating a substrate in which a wire-like spray material based on iron is melted in an electric arc and is isolated as a layer on the substrate is disclosed. The following alloy components are contained in the spray material: carbon: 0.1% by weight to 0.3% by weight; manganese: 1.5% by weight to 2.0% by weight; and silicon: 0.25% by weight to 0.4% by weight, respectively with regard to a total weight. The substrate is an aluminium alloy and the surface thereof is roughened mechanically before the coating in such a way that a roughness is formed with undercuts which are filled with the spray material over the course of the coating and therefore a cause a mechanical interlocking of the coating with the substrate. The coating is removed on the surface. An electric arc wire sprayed layer based on iron on the substrate is also disclosed.

Abstract: In an internal combustion engine comprising an engine braking arrangement including a constant throttle valve, an exhaust gas turbocharger with a variable turbine guide vane structure and a power turbine connected to an exhaust tract and a compressor connected to an intake tract of the internal combustion engine, the power turbine is disposed in the exhaust duct downstream of the exhaust gas turbine and is driven by the exhaust gas of the internal combustion engine and a bypass device is provided in a bypass pipe which extends around the power turbine and via which the exhaust pipe can be completely closed and the bypass pipe can be completely or partially closed so as to selectively partially or completely block the exhaust gas flow and the bypass flow to an exhaust gas discharge pipe.

Abstract: In a valve drive for a piston internal combustion engine with a first rocker lever which is in operative contact with at least a first cylinder valve, wherein a cam structure including a first cam and at least one additional cam is in active contact with a second rocker lever, which can be placed in force transmission contact with the first rocker lever by an actuator element for transferring the pivot motion generated by the first and second cams selectively from the second rocker lever to the first rocker lever and at a rate depending on an idling angle determined by the actuator element.

Abstract: In an internal combustion engine comprising an engine braking arrangement including a constant throttle valve, an exhaust gas turbocharger with a variable turbine guide vane structure and a power turbine connected to an exhaust tract and a compressor connected to an intake tract of the internal combustion engine, the power turbine is disposed in the exhaust duct downstream of the exhaust gas turbine and is driven by the exhaust gas of the internal combustion engine and a bypass device is provided in a bypass pipe which extends around the power turbine and via which the exhaust pipe can be completely closed and the bypass pipe can be completely or partially closed so as to selectively partially or completely block the exhaust gas flow and the bypass flow to an exhaust gas discharge pipe.

Abstract: In a valve drive for a piston internal combustion engine with a first rocker lever which is in operative contact with at least a first cylinder valve, wherein a cam structure including a first cam and at least one additional cam is in active contact with a second rocker lever, which can be placed in force transmission contact with the first rocker lever by an actuator element for transferring the pivot motion generated by the first and second cams selectively from the second rocker lever to the first rocker lever and at a rate depending on an idling angle determined by the actuator element.