Ishikawajima-Harima Jukogyo Kabushiki Kaisha

Hiromu Furukawa

Nobuhiro Kondo

Ken Mitsubori

Satoshi Yamaguchi

Masami Shimizu

Akira Iwakami

Shinobu Saito

Kazuhiro Onizuka

Yuji Masumoto

Fusayoshi Nakamura

Kinshi Takagi

Kaoru Aso

Hiroshi Yamaguchi

Tateo Sakimoto

Yukio Takahashi

A compressor casing defines an air inlet port, an air intake passage with an impeller accommodated therein, a diffuser and a scroll all communicated with each other in the order named. An annually extending chamber is formed between the passage and the scroll and has an opening opened sideways of the impeller in the passage, enhancing an ability of discharging a surging-occuring range to a lower flow rage. The compressor casing may be divided into a casing main body and an inner casing so as to decrease fabrication cost of the compressor casing.

Compressor casing for turbocharger and assembly thereof

Nozzle shafts and a nozzle drive mechanism are disposed on the side of a bearing casing and a compressor whose temperatures are lower than that of a turbine, and elements slidable in the radial direction of the turbine wheel are eliminated from the nozzle drive mechanism so that any adverse effects due to oxidization at high temperatures and slide wear can be eliminated. Thus durability and reliability of the device can be improved.

Nozzle blade angle adjustment device for variable geometry turbocharger

A turbine casing, a shroud and a gas outlet cover together define a closed doughnut-shaped space. A nozzle driving ring inserted in the space is slidably clamped by the turbine casing and the gas outlet cover. Nozzle shafts extending from nozzle blades are connected through links to the nozzle driving ring. The nozzle driving ring can be driven from outside the space. The nozzle driving ring for simultaneously varying the angle of the nozzle blades is restrained in the axial direction effectively with a high degree of accuracy.

Variable displacement turbocharger

A pin which acts as a spring directly extends through an outer race without use of an outer-race casing and a pin holder and the central portion of the pin supports the outer race. Axial movement of the pin beyond a predetermined range is restricted by snap rings fitted on the both ends of the pin. An oil film is formed between the outer peripheral surface of the outer race and the inner peripheral surface of casings and oil reservoirs are also defined to damp axial movement of the outer race. That is, the pin which acts as a spring directly extends through the outer race of the bearing in parallel with a rotating shaft and the central portion of the pin elastically supports the outer race. The ends of the pin are supported by the casings through the snap rings. A space in which an oil film functioning as an oil film damper is formed is defined by the outer peripheral surface of the outer race and the inner peripheral surface of the casings. Furthermore, the oil reservoirs which act to damp the axial movement of the outer race are defined by the end faces of the outer race and the casings.

Bearings for rotary machines

Growing community of inventors

Yokohama, Japan

Hiromu Furukawa