IJAT Vol.6 No.4 pp. 488-493
doi: 10.20965/ijat.2012.p0488


Bubble Elimination from Working Oil for Environmentally Friendly Hydraulic System Design

Yutaka Tanaka*, Sayako Sakama*, and Ryushi Suzuki**

*Hosei University, 2-17-1 Fujimi, Chiyodaku, Tokyo 102-8160, Japan

**Opus System Inc., 3-18-7 Asagayaminami, Suginamiku, Tokyo 166-0004, Japan

February 20, 2012
April 11, 2012
July 5, 2012
bubble eliminator, excavator, hydraulic system, oil degradation, oil reservoir

With a view to environmental compatibility, energy saving, cost reduction, and high performance and efficiency, one trend in hydraulic systems, particularly in mobile markets, is to design them to be more compact, require less hydraulic fluid in the reservoir, and use their working hydraulic fluid longer. Air bubbles entrained in working hydraulic fluids have greatly detrimental effects on the function and lifetime of hydraulic fluids, components, and systems. A bubble eliminator using a swirl flow that can eliminate air bubbles from working hydraulic fluid has been proposed and developed by our smart and clean hydraulic project. This paper focuses on technical issues related to air bubbles, the aging process of hydraulic oil, and a field test of the performance of the bubble eliminator.

Cite this article as:
Yutaka Tanaka, Sayako Sakama, and Ryushi Suzuki, “Bubble Elimination from Working Oil for Environmentally Friendly Hydraulic System Design,” Int. J. Automation Technol., Vol.6, No.4, pp. 488-493, 2012.
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Last updated on Feb. 25, 2021