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Vol.50 No.2

IHI ENGINEERING REVIEW

Vol.50 No.2

1. Products

Products1

IHI Transport Machinery Co., Ltd.

In Southeast Asia, there will be growing demand for parking systems contributing to the elimination of traffic congestion caused by parking on the street. This article introduces the Tower Parking Systems (Pallet type) of IHI Transport Machinery Co., Ltd. delivered to the Housing and Development Board of Singapore.

Products2

Paul Wurth IHI Co., Ltd.

Coke is one of extremely important raw materials for iron-making. While a blast furnace is operating, the stop of supplying the raw material is not allowed, and very stable supply is required. Recently, Paul Wurth IHI Co., Ltd. has completed a coke oven first delivered in Japan.

Products3

IHI Plant Construction Co., Ltd.

Developed for users of liquefied natural gas (LNG) storage tanks who cannot use standard-size LNG tanks due to location constraints, "perlite insulated storage tanks" accommodate height and space limitations. IHI Plant Construction Co., Ltd. provides perlite insulated storage tanks tailored to customer needs.

Products4

IHI Machinery and Furnace Co., Ltd.

The vacuum carburizing process hardens the surface of gears, shafts, and other parts used in cars and construction equipment and improves their wear resistance. New, simplified equipment that is capable of delivering high quality and mass-production — something that has been difficult to achieve until now — have been just passing the corner.

Products5

IHI Corporation

Downsized engines, whose concept is that an engine is downsized to improve fuel consumption and the resulting insufficient torque is covered by a turbocharger, are widely employed by gasoline cars in Europe. In recent years, downsized engines have been employed in Japan as well, and IHI's automotive turbochargers have started to play an active role.

Products6

IHI Rotating Machinery Engineering Co., Ltd.

IHI's screw decanter centrifuges are used in a variety of fields ranging from manufacturing processes to wastewater treatment. In recent years, gastight decanters have become widely used in the fields of oil and gas processing.

 
 

2. Technologies

Technologies1

IHI Corporation

A "working site" is important for manufacturing. If it is possible to see detailed manufacturing steps in advance, how useful it would be in terms of enhancing imagination to improve production quality. "Manufacturing professionals" who thought as stated above built 3D-Technology for visualizing various manufacturing steps. Watch a realistic visualization video on the homepage.

・Demonstration video of iDMU (IHI’s Digital Mock-Up) technology
  https://youtu.be/6grPfgkfOu4

Technologies2

IHI Corporation

ITER — A magnificent project aiming to realize nuclear fusion reactions on the earth that are the same in principle as those in the sun. Realizing this goal requires keeping superconducting coils at temperatures close to absolute zero. What hardware plays the key role in this cooling?

Technologies3

IHI Corporation

We have developed an analysis technique to predict the high-speed housing fracture phenomenon for turbochargers. Imagining severe situations that would normally never occur enabled us to design products with greater safety.

 
 

3. Business

Business1

IHI Corporation

Japanese airlines now priding themselves on the world's best on-time arrival and departure rate. They take all possible measures to absolutely prevent mechanical problems resulting in flight delay or flight cancellation. IHI utilizes their unique platform "ILIPS" to monitor a trend in engine performance during flight, and performs anomaly detection, data acquisition, failure prognostic to support the operation of an aircraft.

Business2

IHI Transport Machinery Co., Ltd.

IHI Transport Machinery Co., Ltd. began operating remote abnormality monitoring systems for mechanical parking systems in 1992, and has since promoted the digitalization of information by establishing call centers and employing field support tools. This article introduces communication platforms for connecting people and the operations that they undertake in the context of system reconstruction that utilizes the latest Information and Communication Technologies.

 
 

4. Technical Papers

Technical Papers1

OGATA Hideki, YAMANE Masaaki, MOGI Katsutoshi

Tilting pad journal bearings are widely used for high-speed rotating machinery because they offer high vibration stability. A high rotational speed causes the bearing temperature to increase, which gives rise to serious concerns about seizure problems. Given this, the ability to precisely predict the bearing temperature is important. This report describes the experimental results for measurements of the bearing temperature at sliding speeds of up to 94m/s. After that, the experimental results are compared to the simulation results obtained using the thermohydrodynamic lubrication (THL) method. In the THL simulation, a new mixing model in which the mixing ratio depends on the oil flow ratio between the pad inlet and outlet is introduced. Based on the comparison with the experimental results, the authors confirm that the present mixing model is reasonable and that it improves the accuracy with which the bearing temperature can be predicted.

Technical Papers2

SATO Wataru, YAMAGATA Akihiro, HATTORI Hiroaki

It is important to predict the resonant vibration level for the design of a variable nozzle turbine. In this study, unsteady CFD analyses are conducted to investigate the flow mechanism that causes aerodynamic excitation forces. As a result, it was found that excitation forces are affected by shock waves and the nozzle clearance flow, and that these forces could be modeled by using one-dimensional aerodynamic parameters for the impeller inlet's dynamic pressure and Mach number. Furthermore, the resonant vibration level was calculated by conducting CFD and FEM analyses and then comparing the results with the experimental data. As a result, it has been confirmed that the CFD results can be used for qualitative evaluations of excitation forces.

Technical Papers3

SHIMONO Naomi, TATECHO Kunihiro, ODA Yoshio

IHI and Niigata Transys Co., Ltd. have successfully completed an APM line-extension project at Hong Kong International Airport. In addition to the 1400 meter APM line extension and new vehicles, the signaling system was completely replaced with a new system in this project. One of the challenges was to minimize the project's impact to the daily operation of the current APM service. Another aspect of this project was that the new system required integration for four types of trains including, these supplied by another manufactures. Through this project, we had a chance to learn a lot and to build up our experience, particularly regarding the best practical methods when building APM line extensions and providing the latest technology to existing facilities.

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