Development of Super-Low Friction Torque Tapered Roller Bearing for Improved Fuel Efficiency

Matsuyama, Hiroki; Dodoro, Hirofumi; Ogino, Kiyoshi; Ohshima, Hiroyuki; Toda, Kazutoshi

doi:10.4271/2004-01-2674

Cited by 11 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A super-low friction torque tapered roller bearing (TRB) applied to the rear axle differential for passenger cars was developed [16], which obtained a friction torque reduction of up to 75% compared with the conventional low friction torque TRB. Its three features are shown in Fig.…”

Section: Technologies For Improving the Fuel Economy Of Engine Systemsmentioning

confidence: 99%

Green tribology: Fundamentals and future development

Zhang

2013

Friction

View full text Add to dashboard Cite

Abstract:As green tribology is a new field of tribology still in its infancy, understanding its fundamentals is essential for its further development. In this article, a brief historical retrospective on the emergence of green tribology is introduced first, and then the definition, objectives, and disciplinary features of green tribology are clarified. In particular, the technological connotations of green tribology are expounded comprehensively. Also, the developing directions of this new area are envisaged. These findings may contribute to laying the foundation of further advancement in green tribology.Keywords: green tribology; technological connotations; environmental impact; biological impact; developing directions BackgroundSince the 1980s, energy and environmental problems on a global scale have increased in severity year by year. Against this background, the objectives of tribology expanded gradually, and then some tribologists successively put forward several new notions: "tribology for energy conservation" (1997), "environmental friendly tribology" (2000), and "ecological tribology or ecotribology" (2000). In particular, after entering the new millennium, tribology was expected to have an increasingly important role to play along with the crises of resources, energy, and environment being aggravated in the world. Its basic objectives of "controlling friction, reducing wear, and improving lubrication" have extended to "saving energy and materials, reducing emissions, shock absorption, decreasing noise pollution, developing bio-and ecolubrication and improving quality of life." It is noticeable that tribology has developed into a new phase. In 2001, to mirror this change in objectives of tribology, a term/area "green tribology" was advanced by the present author at a national symposium on tribology in China. A paper was published from this conference [1], in which the concept and objectives of green tribology were clarified. Soon after, another two expressions also emerged successively, namely, "total tribology" (2001)(2002) and "lifecycle tribology" (2004). In 2008, the concept of green tribology was raised again by the present author at the 5th China International Symposium on Tribology in a plenary lecture, which was intended to replace similar notions as mentioned above [2]. In the lecture, an investigation of the industrial application of tribology in China was presented. It was found that the industrial enterprises of the whole nation can save 414.8 hundred million USD per year (a lowest figure selected) (1.55% of gross national product, GNP, 2006) by means of the industrial application of tribology. Just based on this investigation, it was concluded that "making tribology green"/green tribology is now able to provide full technical support to the preservation of resources and energy, environmental protection, and improvement of quality of life, and even to reduce natural disasters, and so it is certainly an important way forward to a

show abstract

Section: Technologies For Improving the Fuel Economy Of Engine Systemsmentioning

confidence: 99%

Green tribology: Fundamentals and future development

Zhang

2013

Friction

View full text Add to dashboard Cite

show abstract

“…For example, the use of a new automotive transmission bearing has successfully reduced rotational torque 75 percent by improving the sliding resistance between the roller end and the retainer pocket face as shown in Fig. 4 [8]. Such renovations of individual triboelements enable innovations throughout entire systems.…”

Section: Machine Elementsmentioning

confidence: 95%

“…Torque comparison of developed bearing to conventional and ball bearings designed to have same calculated life (JTEKT)[8]. Breakdown of carbon dioxide emissions in Japan.…”

mentioning

confidence: 99%

Environmentally friendly tribology (Eco-tribology)

Sasaki

2010

J Mech Sci Technol

View full text Add to dashboard Cite

The Earth is facing many serious environmental problems. The global warming problem has reached a point at which action cannot be delayed. It is necessary not only to expect novel technological development but also to create realistic solutions by extending conventional technologies. Tribology has supported various technological developments over the years and has also responded promptly to societal demands for decreasing substances from engineering products that would be hazardous to the environment. As societies aim to become sustainable, tribology needs to be involved and contribute to the solution more than ever before. Environmentally friendly tribology, eco-tribology, through progress in surface modification, is seen to be an effective engineering technology that can contribute very much to sustainable societies. Multi-scale surface texturing, which is a new concept of surface modification for tribo-materials, and diamond-like carbon (DLC) coating technology were introduced as the expected future development.

show abstract

“…Matsuyama et al clarified the influence of various design factors in the tapered roller bearing on the viscous rolling resistance and supplied design guidelines for torque reduction. Furthermore, they developed a technique to reduce the agitating resistance by reducing the inflow of the lubricating oil into the inside of the bearing and promoting the discharge of lubricating oil from the bearing; they also developed a low-torque tapered roller bearing [2].…”

Section: Torque Reduction Of Tapered Roller Bearingmentioning

confidence: 99%

“…In addition, the agitating resistance has been reduced owing to the reduction in the inflow of the lubricating oil by reducing the clearance between the cage and the front face rib and owing to the promotion of the discharge of the lubricating oil on increasing the inclination of the roller. In order to compensate for the reduction in the load carrying capacity due to the decrease in the number of rollers and the reduction in the roller length, the roller diameter has been increased [2].…”

Section: Torque Reduction Of Tapered Roller Bearingmentioning

confidence: 99%

Loss Reduction of Rolling Bearings for Automobile

Sada

2017

Tribology Online

View full text Add to dashboard Cite

The role of rolling bearings is to support rotational motion with low friction. Although the friction is low in rolling bearings, it does not mean that friction does not occur at all. Many rolling bearings are used in automobiles. Therefore, if it is possible to reduce the friction loss in the rolling bearings, it can contribute to reducing the fuel consumption of the automobile. In this paper, we introduce representative techniques for reducing the friction in automotive bearings.

show abstract

Development of Super-Low Friction Torque Tapered Roller Bearing for Improved Fuel Efficiency

Cited by 11 publications

References 3 publications

Green tribology: Fundamentals and future development

Green tribology: Fundamentals and future development

Environmentally friendly tribology (Eco-tribology)

Loss Reduction of Rolling Bearings for Automobile

Contact Info

Product

Resources

About