1-3 FEATURES Engine mechanical (piston, piston pin and piston ring) Structure Piston and piston pin The heat-resistant aluminum alloy is used for the piston. The specially shaped combustion chamber is adopted in order to realize excellent combustion and fuel-efficiency. The outer shape of the piston is optimally profiled with taking a thermal expansion and piston oscillations into account. The skirt coating is adopted for the piston in order to reduce noises. Piston cooling jet system is used to cool down in order to maintain the appropriate temperature. The structure with a cooling cavity ensures reliability for high pressure.
Insufficient jets due to deformed or improperly installed cooling jet cause defectiveness in cooling the piston, possibly ending up with malfunctions. The piston pin is made of case hardening steel, to which the full-floating type is applied, providing endurance for high-load. 1 Piston Location of "0" Location of "0" Piston Exhaust side Intake side Piston pin Oil hole Exhaust side Intake side Matching marks Piston and piston pin