Archives of Past Exhibits:Nippon Piston Ring
2014 JSAE Automotive Engineering Exposition
Piston Rings
Diamond Like Carbon coating (DLC coating) is widely used in the automotive market to achieve friction reduction on engine components.Tokyo Motor Show 2013
Dimple-based Friction Optimized Surface Technology (Cylinder Liners)
-Co-developed with Hino Motors. -By forming a dimpled-surface on the cylinder liner inner surface, it was able to reduce friction resistance between the cylinder liner and piston rings, and thereby increased the piston's compression efficiency. This improvement leads to a 3.2% gain in fuel economy on small diesel engine, and it is expected to double the effect on gasoline engines to around 6% improvement.Assembled Type Sintered Camshafts
Installed vehicles: Subaru Vehicle with BOXER engine. Nissan "Skyline" and other models with VQ35 engine.2013 JSAE Automotive Engineering Exposition
Tokyo Motor Show 2011
Piston ring set for latest fuel-efficient gasoline engine
Installed vehicles: Nissan "Serena", "Skyline"Tokyo Motor Show 2005
Continuous Variable Valve Actuator (CVVA) "Reference Model: Patent Pending"
:Great reduction of pumping loss by controlling the air-intake with valve lift volume which replaces the movement of throttle valve.
:Continuous variability of valve lift became reality by rocking movement of control lever over rocker arm.
Core technology products for CVVA
-Assembly of Sintered Cam Shaft
-Assembled Cam Shaft
-Sintered Valve Sheet
-Rocker Arm
:Great reduction of pumping loss by controlling the air-intake with valve lift volume which replaces the movement of throttle valve.
:Continuous variability of valve lift became reality by rocking movement of control lever over rocker arm.
Core technology products for CVVA
-Assembly of Sintered Cam Shaft
-Assembled Cam Shaft
-Sintered Valve Sheet
-Rocker Arm