Friction Reduction Technology for Low Viscosity Engine Oil Compatible with LSPI Prevention Performance

Author(s):  
Toyoharu Kaneko ◽  
Kazuo Yamamori ◽  
Hiroyuki Suzuki ◽  
Ko Onodera ◽  
Satoshi Ogano
Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 732
Author(s):  
Yeoh Jun Jie Jason ◽  
Heoy Geok How ◽  
Yew Heng Teoh ◽  
Farooq Sher ◽  
Hun Guan Chuah ◽  
...  

This study investigated the tribological behaviour of Pongamia oil (PO) and 15W–40 mineral engine oil (MO) with and without the addition of graphene nanoplatelets (GNPs). The friction and wear characteristics were evaluated in four-ball anti-wear tests according to the ASTM D4172 standard. The morphology of worn surfaces and the lubrication mechanism of GNPs were investigated via SEM and EDS. This study also focuses on the tribological effect of GNP concentration at various concentrations. The addition of 0.05 wt % GNPs in PO and MO exhibits the lowest friction and wear with 17.5% and 12.24% friction reduction, respectively, and 11.96% and 5.14% wear reduction, respectively. Through SEM and EDS surface analysis, the surface enhancement on the worn surface by the polishing effect of GNPs was confirmed. The deposition of GNPs on the friction surface and the formation of a protective film prevent the interacting surfaces from rubbing, resulting in friction and wear reduction.


Lubricants ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 9 ◽  
Author(s):  
David Sander ◽  
Christoph Knauder ◽  
Hannes Allmaier ◽  
Slavitsa Damjanović-Le Baleur ◽  
Philippe Mallet

Author(s):  
Rajaganapathy C ◽  
Vasudevan D

In this paper, an attempt was made, to evaluate the tribological performance of Jatropa oil with addition of nanoparticles, on wear reduction in Al 6082 and it was compared with SAE20W40 engine oil. Experiments were conducted with pure Jatropa oil with different weight percentage of TiO2 nanoparticles such as 0%, 0.1%, 0.3% and 0.5%. The coefficient of friction and specific wear rate of the Al specimens were found by using pin on disc tribo-meter as per ASTM G99 standards, at constant speed of 1m/s using different loads such as 20N, 40N and 60N. The experimental results indicated that the addition of TiO2 with Jatropa oil indicated good friction reduction and anti-wear properties, compared to SAE20W40 engine oil. The lubricant viscosity and thermal conductivity were measured using Redwood viscometer and Transient hot wire method. Surface analysis was done using scanning electron microscopy to the study surface morphology of pin material. Surface examination revealed that TiO2 Nanoparticles lead to smoother worn surfaces than commercial Engine oil SAE20W40.


2015 ◽  
Author(s):  
Akemi Ito ◽  
Yusuke Chubachi ◽  
Takumi Yamamoto ◽  
Noriyoshi Tanaka ◽  
Yukiya Moriizumi ◽  
...  

2020 ◽  
Author(s):  
Sachiko Okuda ◽  
Hiroki Saito ◽  
Seiichi Nakano ◽  
Yusuke Koike ◽  
Takumaru Sagawa ◽  
...  

1998 ◽  
Author(s):  
Jagadish Sorab ◽  
Stefan Korcek ◽  
Charles Bovington

Oleoscience ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 371-375
Author(s):  
Yukiya MORIIZUMI

2021 ◽  
Author(s):  
Takumaru Sagawa ◽  
Sachiko Okuda ◽  
Yukiko Takeuchi ◽  
Takahiro Yamazaki ◽  
Shigenori Hidan ◽  
...  

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