Abstract: A thermostat valve includes a thermostat housing having engine-side and radiator-side coolant inlets that are opposed each other, a lateral coolant outlet leading to an internal combustion engine, and a valve disk. The valve disk has an end face that interacts with and faces a valve seat of the radiator-side coolant inlet. The valve disk lies between the radiator-side coolant inlet and a thermostat element arranged in the thermostat housing. The valve disk has, at the outer edge, a guiding element that includes a deflecting surface on the exterior side of the guiding element.

Abstract: A thermostat valve is provided for a cooling system of an internal combustion engine. The thermostat valve includes a thermostat housing having engine-side and radiator-side coolant inlets that are opposed each other, a lateral coolant outlet leading to the internal combustion engine, and a valve disk. The valve disk has an end face that interacts with and faces a valve seat of the radiator-side coolant inlet. The valve disk lies between the radiator-side coolant inlet and a thermostat element arranged in the thermostat housing. The valve disk has a disk part and, at the outer edge of the disk part, a guiding element connected to the disk part and having a deflecting surface on its exterior side.

Abstract: A two-stage exhaust gas turbocharger for an internal-combustion engine having an exhaust manifold is provided. In the exhaust gas flow direction a first high-pressure turbocharger and a second high-pressure turbocharger are arranged parallel to one another and a low-pressure turbocharger is arranged in series behind the latter. The two high-pressure turbine housings can be arranged on the exhaust manifold on one side and the low-pressure turbine housing can be arranged on the exhaust manifold on the other side. The exhaust gas coming from the high-pressure turbine housings is guided through a flow duct in or on the exhaust manifold to the low-pressure turbine housing. By way of this construction of the two-stage exhaust gas turbocharging, a compact construction is achieved resulting in cost savings.

Abstract: A two-stage exhaust gas turbocharger for an internal-combustion engine having an exhaust manifold is provided. In the exhaust gas flow direction a first high-pressure turbocharger and a second high-pressure turbocharger are arranged parallel to one another and a low-pressure turbocharger is arranged in series behind the latter. The two high-pressure turbine housings can be arranged on the exhaust manifold on one side and the low-pressure turbine housing can be arranged on the exhaust manifold on the other side. The exhaust gas coming from the high-pressure turbine housings is guided through a flow duct in or on the exhaust manifold to the low-pressure turbine housing. By way of this construction of the two-stage exhaust gas turbocharging, a compact construction is achieved resulting in cost savings.