| 摘要 |
1,199,809. Timing ignition. EATON YALE & TOWNE Inc. Aug.30, 1967 [Dec. 22, 1966], No.39642/67. Heading F1B. A valve 20 is provided for connecting the spark advance mechanism 13 to a carburetter chamber 29 upstream of the throttle valve 26 or to a manifold chamber 30 downstream of the throttle valve depending on the operating temperature of the engine. The valve comprises a housing having a first chamber for communication with the spark advance mechanism a second chamber for communication with the carburetter chamber and a third chamber for communication with the manifold chamber. A valve member is movable between a first position to isolate the third chamber from the first and second chambers and a second position to isolate the second chamber from the first and third chambers and means responsive to the operating temperature of the engine is provided for moving the valve member between the first and second positions. The valve member may be spherical and situated between opposed seats. The temperature responsive member may comprise a hollow body portion filled with wax or similar substance which expands upon being heated. A spring is provided to accommodate overtravel of the plunger of the temperature responsive member. |
