| 摘要 |
The invention relates to a thermostat valve for a combustion engine, comprising a housing with several cooling fluid connections, and comprising at least two hollow valve elements which are mounted rotatably such that they are arranged next to one another in the housing on a common rotational shaft, the valve elements having in each case at least one opening which is formed in the region of their shell surface, it being possible for the openings to be connected selectively to one or more of the cooling fluid connections of the housing by way of rotation of the valve elements, and rotational drive means being provided, by way of which a first of the at least two valve elements can be driven rotationally in the housing, it being possible for a second of the at least two valve elements to selectively be coupled to the first valve element or decoupled from the first valve element, the second valve element likewise being driven rotationally, in the state in which it is coupled to the first valve element, by way of rotation of the first valve element, and a coupling element being provided which is mounted axially movably on the rotational shaft, and coupling drive means being provided, by way of which the coupling element can be moved axially on the rotational shaft between a coupling position and a decoupling position, the coupling element producing a rotationally fixed coupling in the coupling position between the first valve element which is driven by the rotational drive means and the second valve element, and releasing said rotationally fixed coupling in the decoupling position. |
