Japanese
Development aims
Reduce the amount of oil supplied with the main bearing
→Enables downsizing of the oil pump and securing of hydraulic pressure without compromising bearing performance
Development concept
Side leakage near the mating surface that does not contribute to lubrication and cooling is reduced by making the oil groove shallower.
Conventional groove
Side leakage from the crush relief is a common occurrence.
Eccentric groove
Side leakage is reduced by gradually diminishing
the depth of the oil groove.
Performance
Oil Reduction Effect
Oil pressure improvement effect
