control unit for a gas turbine abblasventil, especially an exhaust gas turbine of a kolbenbrennkraftmaschine

摘要

1,058,237. Gas turbines; charging engines. INTERNATIONAL HARVESTER CO. Nov. 25, 1963 [April 4, 1963], No.46409/63. Headings F1B and F1G. [Also in Division G3] The waste gate valve 68 of an exhaust driven turbine (28) Fig. 1 (not shown), driving a compressor (30) is opened by a piston 60 when the compressor delivery pressure exceeds a predetermined value. The compressor delivery pressure is transmitted through a pipe 78 and orifice 85 to chamber 86 to bias the valve 68 closed. When the compressor pressure exceeds a predetermined value, a spring-loaded valve 98 is forced down to open orifices 106 to transmit the pressure through passage 90 to chamber 92 to open the valve 68 and by-pass the exhaust gases through by-pass (44), (46). Chamber 86 is provided with a bleed orifice 107 whereby a continued flow of air is maintained, the pressure in chamber 86 being determined by the orifices 85, 107. The piston rod 62 is hollow to assist cooling and cooling fins are provided on the piston chamber 48. A thin metal sheet 72 shields the piston casing from the exhaust gases.