| 摘要 |
<p>340,449. Engine governors. HANDY GOVERNOR CORPORATION, 3925. West Fort Street, Detroit, Michigan, U.S.A.- (Assignees of Bull, A. A. ; 3925, West Fort Street, Detroit, Michigan, U.S.A.) Feb. 28, 1930, No. 6673. Convention date, June 8, 1929. [Class 57.] The flow of mixture to an internal-combustion engine is controlled by a valve situated in the induction pipe between the manual throttle and the engine, and provided with auxiliary closing means arranged between the manual throttle and the governing valve. The valve 10 is of the butterfly type, pivoted at 16 to a housing 11 adapted to be bolted in the induction pipe. The valve is unbalanced so that the flow of mixture tends to close it and the closing is resisted by a spring 30 acting upon a crank 24 on the pivot 16. One end of the spring 30 is attached to a lever 28 pivoted at 28<1> and provided with a cam face 27 contacting with the crank pin 25 such that the spring exerts a force, in any position of the valve, which exactly balances that tending to close the valve. To prevent the valve 10 fluttering it is connected to a dashpot comprising a piston 33 arranged in the cylinder 34 attached to the induction pipe so that one side of the piston is subjected to the induction pressure and the other to atmospheric pressure through throttling passages 41. When the carburetter throttle is nearly closed owing to increased suction on the piston 33, it aids to close the valve 10.</p> |
