US Patent: 923,594
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| Gas Engine
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Patentee:
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| Carl G. Sprado (exact or similar names) - Milwaukee, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 01, 1901 |
| Granted: |
Jun. 01, 1909 |
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Joel Havens
"Vintage Machinery" entry for Allis-Chalmers Manufacturing Co.
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Description: |
| Application renewed 27 Jul 1908.
Abstract:
This invention relates to gas engines and the combination therewith of a specific type of valve mechanism for controlling the admission of an explosive mixture to the explosion chamber of such engines, and is primarily intended to be made use of in connection with that type of gas engine in which it is customary to use variable charges of an explosive mixture and also to admit into the explosion chamber a filling or displacing medium.
The specific valve mechanism herein disclosed is not necessarily limited in its application to gas engines but may be used wherever similar functions are desirable.
In gas engines where various sized charges of explosive mixture are admitted into the explosion chamber of the engine, While a filling or displacing medium is also admitted to said explosion chamber in order that the pressure conditions existing within said chamber may remain constant notwithstanding the differences that may exist between the sizes of the charges of the explosive mixture admitted at different times, the proper separation of the filling medium from the charge of explosive mixture, or stratification, as it is called, is of great importance in order that the entire charge of explosive mixture may be exploded together and thereby prevent a slow and comparatively useless burning of a part of the charge, thus wasting its energy. Where in an engine it is desired to maintain perfect stratification as between the charge of explosive mixture and a filling medium, it is necessary in order to obtain the most perfect results for the admission valve to en and close as instantaneously as possib1e.
It is the purpose of this invention to provide a gas engine, in which the principle of stratification is used, with valve gear for controlling the supply of the explosive mixture which operates the valve practically instantaneously, said valve operating mechanism not being dependent upon the speed of the engine for its speed of operation.
While the drawings illustrate a specific practical embodiment of an apparatus for carrying out this invention, it is to be understood that the invention is not limited to the construction shown in which springs are put under compression during a cycle of the engine when the valve is inactive, thus storing power for the instantaneous operation of the valve at the proper times in the cycle of operation. Any other mechanism equivalent to that shown and described by this application could be substituted for that herein shown and described, provided it operated the valve practically instantaneously, the time consumed in the actual opening and closing movement not being dependent upon the speed of the engine, and such a construction would be included within the scope of this invention.
Claims:
1. The combination with a gas engine provided with an explosion chamber of a gas valve and mechanism adapted during the suction stroke of said engine to operate said valve to permit the said explosion chamber to be filled by a filling medium, a charge of explosive mixture and. additional filling medium Stratified in the order enumerated, a governor responsive to the speeds of the engine for controlling the operation of said valve to vary the size of the charge of explosive mixture, and means for opening and closing said valve substantially instantaneously operating through a period of time independent of the speeds of said engine.
2. The combination with a gas engine, of a gas admission valve, a governor responsive to the speeds of the engine, and means to open and close said gas valve substantially instantaneously operating through a period of time independent of the speeds of the engine but the times of beginning the opening and closing of said valve both being determined by the speeds of the engine as indicated by said governor.
3. The combination with a gas engine provided with an explosion chamber of a main admission valve and operating mechanism therefor adapted to retain said valve open during the suction stroke of said engine, a gas valve adapted when in its closed position to permit a filling medium to flow into said explosion chamber and when in its open position to prevent such low but to permit an explosive mixture to How into said explosion chamber, means for opening and closing said gas valve substantially instantaneously operating through a period of time independent of the speeds of said engine, a governor responsive to the speeds of said engine, and means controlled by said governor to cause said gas valve to be opened sooner and closed later as the speed of said engine decreases.
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