Design, installation and operation of cams for the valve-gear of a three-cylinder, 8 x 10 inWestinghouse gas engine . Conclusion 17 ii ^itaiyiJW/lfc List of IllvBtrations and Diagraaifl Fig. 1 8 X 10 three cylinder Gas Engine 2 Section through S x 10 Westinghoiise Gas Engine 3 Detail of the Engine - Plan 4 Detail of the j;ngine - Front View 5 Detail of the Engine - End 6 Detail of Mixing Valve 7 Outline of Original Inlet Cam 8 Outline of New Inlet Cam 9 Outline of Original Exhaust Cam10 Outline of New Exhaust Cam 11 -15 Indicator cards from Preliminary Tests 16 -20 Enlargements o
Design, installation and operation of cams for the valve-gear of a three-cylinder, 8 x 10 inWestinghouse gas engine . Conclusion 17 ii ^itaiyiJW/lfc List of IllvBtrations and Diagraaifl Fig. 1 8 X 10 three cylinder Gas Engine 2 Section through S x 10 Westinghoiise Gas Engine 3 Detail of the Engine - Plan 4 Detail of the j;ngine - Front View 5 Detail of the Engine - End 6 Detail of Mixing Valve 7 Outline of Original Inlet Cam 8 Outline of New Inlet Cam 9 Outline of Original Exhaust Cam10 Outline of New Exhaust Cam 11 -15 Indicator cards from Preliminary Tests 16 -20 Enlargements of Figs. 11 to 15 21 Diagram of Conical Poppet Valve 22 Kinematic design for Inlet Cam 23 Diagram of Inlet : j^ . Cam and Lever 24 Kinematic Design for Exhaust Cam 25 Diagram of Exhaust Valve, Cam and Lever 26 Diagrams of Port Openings 27 Detail of Exhaust Cam Shaft, Cams and Bearings. 28 Detail of New Inlet Cams 29 Detail of New Exhavtst Cams 30-35 • Indicator Cards taken After Installation of New Cams 36 Enlargement of Fig. 30 iii uiS-s ensijjsiyai/j sraxV Ji-:->i1 - -f^ lo 11 a. ev lo floiJ/tllstwiI :-. introduction The investigations described in these pageswere undertaken with the purpose of studying the ef-fect upon the performance of a Westinghouse gsis en-gine, produced by certain predetermined changesin the forms of ths cams controlling the valve motion. The engine used in the experiments is a three cyl-inder 8 X 10, four cycle, constant volume, vertical ma-chine, made by the Westinghouse Machine Company of E£istPittsburgh, Pa. It is rated at 40 horse power and iscapable of delivering about 45 brake horse power continu-ously. It was built about 1902 and owing to the fact thatthere has been a considerable advance in the matter of camdesign since that time, it has been thought possible to in-crease the maximum output and economy by means of modifyingthe cams smd valve motion. The considerations leading tothis conclusion will be discussed in another part
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