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Title: |
1891 Article-Fielding and Platt, 16 H. P. Gas Engine |
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Source: |
Engineering Magazine, V 52, 31 Jul 1891 pgs. 124 & 126 |
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Insert Date: |
6/22/2013 12:30:36 PM |
FIELDING AND PLATT'S GAS ENGINE
In our account of the Doncaster Show we mentioned a fine gas engine of 16 nominal horse-power, exhibited by Messrs. Fielding and Platt, of the Atlas Iron Works, Gloucester, and we are now able to place engravings showing details of the engine before our readers. Although rated at but 16 horse-power, the engine is capable of indicating 42 horse-power. It works on the Otto or De Rochas' cycle, and, as shown in Fig. 1, is very similar in appearance to the Otto engine, but the working ports have been reduced to a minimum by the use of the ingenious compound valve shown in Fig. 2. As they’re shown the main valve is of the pot-lid type, and opens direct into the cylinder. Below and in the same spindle is a bush forming another valve which is kept in contact with the disc of the main valve by the spring as shown. Suppose the engine at the end of its acting stroke. The main valve then is just on the point of rising from its seat, and the exhaust gases pass round it through the annular space between the bush and the valve chamber to the exhaust pipe as shown. At the end of the exhaust stroke, however, the motion of the valve having been continued, the inclined portion of the bush comes in contact with a valve seating on the valve |
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1891 Fielding and Platt, 16 H. P. Gas Engine
1891 Fielding and Platt, 16 H. P. Gas Engine Cylinder & Valves
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