Development of a High-Performance TiA1 Exhaust Valve 960303
A new high-performance and lightweight TiA1 intermetallic compound exhaust valve has been developed. The TiA1 valve can improve power output and fuel economy by contributing higher engine speeds and a reduction in valvetrain friction. It was achieved by developing a Ti-33.5A1-0.5Si-1Nb-0.5Cr (mass%) intermetallic compound, a precision casting method for TiA1 that provides a low-cost, high-quality process, and a plasma carburizing technique for assuring good wear resistance on the valve stem end, stem and face.
Citation: Maki, K., Ehira, A., Sayashi, M., Sasaki, T. et al., "Development of a High-Performance TiA1 Exhaust Valve," SAE Technical Paper 960303, 1996, https://doi.org/10.4271/960303. Download Citation
