| 主权项 |
1. A gas exchange valve of an internal combustion engine, comprising:
a hollow valve stem having a longitudinal axis and a valve disc, the valve disc includes a valve bottom and a hollow valve cone, the valve cone connected to an outer edge of said valve bottom, wherein the hollow valve cone tapers with increasing distance from the valve bottom, and the valve stem passes through the hollow valve cone, wherein the valve stem is fixedly connected at an end face to the valve bottom to define a fluid-tight connection and in a region axially spaced from the end face to the tapered end of the valve cone, wherein the valve stem includes a first hollow space, which is fluidically separated and radially inward from a second hollow space arranged in the valve disc via the fluid-tight connection between the end face of the valve stem and the valve bottom, wherein the first hollow space radially inward of the fluid-tight connection has a higher cooling agent filling level than the second hollow space, thereby causing a shaker effect in the first and second hollow spaces to enhance cooling, and wherein at least one of the valve disc and the valve stem has a nitriding layer. |
