Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Mitsubishi Heavy Industries Compressor Corporation

Waseda University

Takeshi Yoshimi

Yasuyoshi Tozaki

Takashi Shiraishi

Motoki Ebisu

Noriyuki Hayashi

Taku Ichiryu

Masashi Sasaki

Tadao Yashiki

Akihiko Umeda

Hideaki Nishida

Hiroyuki Sonobe

Isamu Shiotsu

Akihiko Yano

Yukihide Nagayo

Susumu Matsumoto

Atsushi Higashio

Jack Samuel Lavender

Takayoshi Hirayama

Kazuya Takeda

Takeshi Yasoshima

Kazuki Okuda

Toshimasa Igusa

Hiroyasu Ochiai

A stationary-blade-type rotating machine is provided with a rotational shaft, an impeller, an impeller housing having a scroll passage formed on an outer peripheral side of the impeller, a bearing housing connected to the impeller housing in an axial direction of the rotational shaft, a stationary blade disposed in a radial passage formed between the scroll passage and the impeller and defined by an impeller-housing-side member and a bearing-housing-side member which face each other in the axial direction of the rotational shaft. The fixation unit includes an annular circumferential groove formed in an inner peripheral surface of the impeller housing and a ring-shaped fitting member subjected to a force for expanding in a radial direction while being fitted into the circumferential groove. The fitting member is configured to press the stationary blade to the impeller housing via at least one of the impeller-housing-side member or the bearing-housing-side member.

Stationary-blade-type rotating machine and method for assembling stationary-blade-type rotating machine

To provide a waste-gate valve device with a good flow-rate controllability. A waste-gate valve deviceincludes: a turbine housingprovide with a waste-gate channelthrough which exhaust gas bypasses a turbine; and a waste-gate valveto open and close an outlet of the waste-gate channel. The waste-gate valveincludes a valve bodyto open and close the outlet of the waste-gate channel, and a protrusionto be housed in the waste-gate channelwhen the valve bodycloses the outlet of the waste-gate channel. The waste-gate channelensures a maximum flow rate of exhaust gas at a time when the waste-gate valve is fully open. An area ratio of a flow-path cross-sectional area Aof the waste-gate channelto a flow-path cross-sectional area Aof a merging portion is not more than 0.2, the merging portion being a part at which exhaust gas having passed through the turbine merges. A widened portionA at which the flow-path cross-sectional area increases is disposed on the outlet of the waste-gate channel.

Waste-gate valve device

Provided is a compressor that is capable of, with a simple configuration, facilitating the insertion operation of a compressor bundle by reliably preventing tilting thereof during insertion into a chamber; and that also makes it possible to reduce a roller size without increasing the contact pressure of rollers for sliding the compressor bundle. A small tilt sensor that detects a relative angle difference &#x3b8; of the compressor bundle with respect to the bundle casing is provided at at least one location in the compressor bundle to be inserted into the chamber inside the bundle casing. In addition, the weight of the compressor bundle during the insertion into the chamber is supported by rollers provided at a bottom portion near the front end of the compressor bundle by making the rollers come in contact with an inner circumferential wall surface of the chamber.

Compressor and method of assembling the same

A first rotary shaft and a second rotary are rotatable around a rotation axis. The second rotary shaft has a cylindrical supporting part that covers an end section of the first rotary shaft. A case supports the first and second rotary shafts. A first rolling bearing is disposed between the first rotary shaft and the case and rotatably supports the first rotary shaft. A second rolling bearing is disposed between the supporting part and the first rotary shaft and supports the first rotary shaft and the second rotary shaft such that they are rotatable relative to each other. A transmission part of the second rotary shaft transmits to the second rolling bearing a preload force that pushes the second rotary shaft to the first rotary shaft side. A load-receiving part of the case receives the preload force transmitted from the second rolling bearing to the first rolling bearing.

Speed increasing/decreasing apparatus

A micro-traction drive includes an inner ring formed rotatably supported about an axis; an outer ring having a larger diameter than the inner ring; rolling elements rolling while being in contact with an outer circumferential surface of the inner ring and an inner circumferential surface of the outer ring; a retaining portion that keeps the rolling elements apart from one another; a pressing portion that applies a preload between the inner ring and the rolling elements and between the outer ring and the rolling elements; and an input shaft that is formed to have a smaller diameter than the inner circumferential surface of the inner ring, is disposed adjacent to the inner ring, and transmits a rotational driving force to the inner circumferential surface of the inner ring. One of the outer ring and the retaining portion is connected to the output shaft, and the other thereof is fixed.

Micro-traction drive

There is provided a compact and highly durable variable-speed traction drive transmission device. A traction drive transmission device which uses the traction of rolling bodies K arranged between an input shaft Si and an output shaft So to change the number of revolutions of the input shaft Si into a desired transmission ratio and output from the output shaft So, has a rotation axis of the rolling bodies K arranged at an incline so that it is not orthogonal to the axis of the input shaft Si and the output shaft So, and there is provided: a load regulation camwhich automatically changes a preload applied to the rolling bodies K corresponding to a torque of the input shaft Si; and a differential type transmission ratio variation mechanism using a worm gear, which is connected to a retainerserving as a traction input-output member of the rolling bodies K, and performs number of revolutions control of the retainerto change the transmission ratio.

Torque transmission structure, traction drive transmission device, and steering device for vehicle

Growing community of inventors

Tokyo, Japan

Takeshi Yoshimi