| 摘要 |
PURPOSE:To improve the heat efficiency of an engine by limiting the depth of the hole of an elastic seal spool to the full-open lift of a main valve to automatically eject the water entered the spool and also to attain the automatic initialization of the full-open lift of the main valve and an open valve lift. CONSTITUTION:When the temperature of the engine cooling water of a wax type thermostat rises up, an elastic seal spool 8 is deformed by expansion of a wax 7 set in a thermoactuator 5. Then a push lod 9 is squeezed upward by the deformation of the spool 8 and therefore a main valve 4 is relatively opened downward. While the valve 4 is closed by the function of a compression spring 6 when the wax 7 shrinks owing to the drop of temperature. Here the depth of a hole of the spool 8 is limited to the full-open lift of the valve 4 to eject automatically the water entered the spool 8. Then the initialization is automatically carried out for the full-open lift of the valve 4 and the open valve lift. Thus the heat efficiency of the engine is improved.
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