Mitsubishi Heavy Industries Limited

Mitsuru Aiba

Takashi Arai

Noriyuki Hayashi

Takamitsu Himeno

Yukihide Nagayo

Takao Yokoyama

Toru Hoshi

Hiroyuki Arimizu

Toshio Sakon

An object is to provide a variable-geometry exhaust turbine whereby it is possible to prevent deformation and damage to a nozzle support under a high temperature. A variable-geometry exhaust turbine includes: a nozzle mount, a nozzle support including a first end portion joined to the first surface of the nozzle mount, a nozzle plate including the first surface joined to the second end portion of the nozzle supportand supported so as to face the nozzle mount at a distance, and the opposite second surface facing an exhaust&#x2014;as channel through which exhaust gas flows, and a plurality of nozzle vanes supported rotatably between the nozzle mount and the nozzle plate. The nozzle support is capable of tilting along a radial direction so as to absorb a relative displacement in the radial direction between the nozzle mount and the nozzle plate due to thermal expansion.

Variable-geometry exhaust turbine

An object is to provide a variable-geometry exhaust turbocharger including a variable nozzle mechanism in which nozzle supports may not deform under a high-temperature condition. A variable-geometry exhaust turbocharger () includes: a nozzle mount (); a nozzle support () having a first end coupled to a first face () of the nozzle mount; a nozzle plate () coupled to the second end of the nozzle support and supported to be separated from the first face () of the nozzle mount, the nozzle plate having a first face () coupled to the nozzle support and a second face () which is opposite to the first face and which faces an exhaust gas channel () through which exhaust gas flows: a plurality of nozzle vanes () rotatably supported between the nozzle mount and the nozzle plate; and a variable nozzle mechanism () configured to change vane angles of the nozzle vanes to control a flow of the exhaust gas flowing between the nozzle mount and the nozzle plate. The nozzle plate is formed of a material having a smaller linear expansion coefficient than that of a material forming the nozzle mount.

Variable geometry exhaust turbocharger

Growing community of inventors

Tokyo, Japan

Mitsuru Aiba