Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Patent
1988-01-25
1989-04-11
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
415164, F04D 1716
Patent
active
048201189
ABSTRACT:
A variable-displacement turbine includes a turbine wheel, and a turbine housing accommodating a turbine wheel and having an exhaust inlet tubular member for introducing a stream of exhaust gases from an engine, top and base plates having confronting parallel annular end surfaces, respectively, concentric with the turbine wheel, the top and base plates defining a passage for supplying and guiding the stream of exhaust gases through the exhaust inlet tubular member to the turbine wheel from its outer periphery, and a vane mechanism disposed annularly in surrounding relation to the turbine wheel and between the annular end surfaces. The vane mechanism includes a plurality of drive shafts rotatably extending through the base plate and disposed at substantially equally spaced angular intervals between the annular end surfaces, the drive shafts being rotatably actuatable by an actuator, and a plurality of movable vanes extending between the annular end surfaces, the movable vanes having base end portions mounted respectively on the drive shafts in slidable contact with the base plate and wing portions extending respectively from the base end portions and spaced from the base and top plates by distances, the movable vanes being tiltable between the annular end surfaces in response to rotation of the drive shafts, respectively, for regulating the stream of exhaust gases. The movable vanes can be tilted unobstructedly even if various members are subjected to thermal strains and/or dimensional errors.
REFERENCES:
patent: 2428830 (1947-10-01), Birmann
patent: 2860827 (1958-11-01), Egli
patent: 3101926 (1963-08-01), Weber
patent: 3972644 (1976-08-01), Johnson
patent: 4657480 (1987-04-01), Pfeil
patent: 4678397 (1987-07-01), Komatsu et al.
Hayama Masato
Yano Shunji
Garrett Robert E.
Honda Giken Kogyo Kabushiki Kaisha
Pitko Joseph M.
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