RADIAL PULSED TURBINE FOR DIESEL SUPERCHARGING Russian patent published in 1998 - IPC

FIELD: equipment used in turbocompressors for diesel supercharging. SUBSTANCE: radial pulsed turbine has working wheel and nozzle unit with gas supply channels connected to nozzle unit. Gas supply channels are provided with cutoff devices and connected to gas discharge channels which connect discharge valves of cylinders having continuous working cycles. Cutoff devices are formed as disks with arced windows, whose angular length is decreasing from first disk downstream of gas flow to terminating disk. Distance between axis of rotation of shaft carrying disks and disk window arced edges is less than distance between axis of rotation of shaft and nearest nozzle unit blade surface. Disk shafts are fixed in kinematic coupling with diesel crankshaft so that maximum area of disk windows corresponds to the beginning of the first half of opening phase of each group of diesel discharge valves and, respectively, disks windows are out of gas supply channel section at the second half of discharge valve opening phase. Disks are disposed in front of nozzle unit blade edges downstream of gas flow with minimum allowable space providing free rotation of disk. EFFECT: increased efficiency by equalized speed over active part of nozzle unit in front of working wheel and enhanced reliability in operation. 14 cl, 3 dwg