| 摘要 |
1,090,353. Valves, hydraulic reciprocating motors and pumps. T. E. MEALIN and D. GREAVES. Sept. 5, 1966 [Sept.14, 1965], No. 39632/66. Headings F1A, F1B and F1M. [Also in Division F2] A rotary valve for an I. C. air or hydraulic engine comprises a hollow cylinder 1, Fig. 1, having axially spaced annular recesses 21, 22 each connected to a pocket 26, the pockets being angularly offset from each other around the periphery and sealing-ring grooves 24, 25 being arranged on each side of each recess. Further sealing-ring grooves 27, 28 are arranged between pockets 26. Spring-loaded sealing-pads (17), Fig. 3 (not shown) are arranged in the inner surface of housing (2) on each side of ports (12). Lubricant is supplied via passages (30). The valve is cooled by a coolant flow through bore 8 assisted by an axially extending cooling vane (9), Fig. 2 (not shown). In an I. C. engine application the valve 1 is driven by chain 7 from the crank-shaft. Fuel mixture is admitted via port 18 and recess 21 to pocket 26 and thence passes via ports 12, 13 to cylinder 16. Vanes 23 or roughened wall surfaces given enhanced turbulence to the fuel mixture. The vanes may also be used to effect a degree of supercharging. Exhaust gas passes through port 12, pocket 26, recess 22 and port 19 to atmosphere. In another embodiment the pockets 26 lie in the same axial plane. |
