Latest Piston Ring Technology

 
Physical Vapor Deposition
High Performance Oil Ring
Diamond-Like Carbon
Technical Character
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PVD-1 PVD-2 Me-PVD
CrN CrON Me-PVD
1200-1600HV0.06 1500-1900HV0.05 1600-2000HV0.06
-40μm 30μm -60μm
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Production Line
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Application
 
TOP
2nd
Oil
PC
CV
 
 
TOP
2nd
Oil
PC
   
CV
   
 
TOP
2nd
Oil
PC
CV
 
Performance
High wear resistance
Scuff resistance
Low friction
High conformability
Optimized oil scraping effect
Break resistance Low friction loss
Self-lubricating
Scuff resistance
Low friction


Passenger Car Piston Ring
Product Design

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  Low tension design, min.: 0.2N/mm
 
  Low friction & wear resistance coating application
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PC piston ring tension development trend
 
Friction coefficient
Boundary lubrication
Engine effect: Reduce friction loss and improve fuel efficiency by 2-3%
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Top Ring:DLC added
Oil Ring:Normal OR→HPO
  TGDI engine mega knock countermeasure
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Pierced Piston
Oil ring
carbon deposition
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Compression ring deformation
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Improve top ring anti-deformation
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Oil ring structure design improvement to reduce LOC
Mega knock and influence
1.5TGDI engine piston ring countermeasure

Test and Validation

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Test and Validation
Pressure pattern design and test
Fatigue strength
Engine bench test
Ball crater tester

Manufacturing

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PVD
Side rail coil machining
H type coil machining
S type coil machining
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Oval coil machining
CBN Side grinding
O.D. lapping