Analysis of Piston Friction – Effects of Cylinder Bore Temperature Distribution and Oil Temperature

Hybrid vehicles (HVs) are becoming more widely used. Since HVs supplement engine drive with motor power, the lubricant oil temperature remains at a lower level than in a conventional gasoline vehicle. This study analyzed the effect of cylinder bore temperature and lubricant oil temperature on engine...

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Bibliographic Details
Published in:SAE International Journal of Fuels and Lubricants 2012-01, Vol.5 (1), p.1-6, Article 2011-01-1746
Main Authors: Kimura, Yuichiro, Murakami, Motoichi
Format: Article
Language:English
Subjects:
Coolants
Cylinders
Engines
Friction
Friction reduction
Gasoline
Hybrid vehicles
Lubricants
Oil
Pistons
Rotation
Sensors
Skirts
Temperature distribution
Water temperature
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Summary:Hybrid vehicles (HVs) are becoming more widely used. Since HVs supplement engine drive with motor power, the lubricant oil temperature remains at a lower level than in a conventional gasoline vehicle. This study analyzed the effect of cylinder bore temperature and lubricant oil temperature on engine friction. The results showed that, although the lubricant oil temperature was not relevant, the bore temperature had significant effect on piston friction. It was found that raising the temperature of the middle section of the cylinder bore was the most effective way of reducing piston friction.
ISSN:1946-3952
1946-3960
1946-3960
DOI:10.4271/2011-01-1746