Development aims
Rapid warming up of the oil film during cold starts
→Reduced fluid friction
Reduction of amount of oil leaked from the bearing
→Reduced capacity of the oil pump
![](/assets/media/2023/04/img-small_groove_ptg-1.jpg)
Development concept
Leaked oil is drawn in to facilitate rapid warming up of the oil film
Current products
![](/assets/media/2024/05/img-small_groove_ptg-2_en.jpg)
PTG bearing
![](/assets/media/2024/05/img-small_groove_ptg-3_en.jpg)
Performance
Engine:L4 1.8L
Mode of operation:Motoring
Oil type:0W-20
Effect obtained by warming up the lubricating oil
![](/assets/media/2024/05/img-small_groove_ptg-4_en.png)
FMEP reduction effect
![](/assets/media/2024/05/img-small_groove_ptg-5_en.png)
Fuel consumption (JC08) : Improved by 0.035% (converted value)