ポペット形油圧弁の特性に対する弁形状の影響 : 第2報,ポペット先端に平面を持つ場合

抄録

The effect of a difference in the form of a poppet top on the performance of an oil hydraulic poppet valve is investigated experimentally. The flow characteristics, thrust performance, noise level and cavitation limit are researched on the three different shaped poppet valves: type (A) the conical poppet, type (B) the conical with a flat part on the top, and type (C) the cylindrical form. It is made clear that the flatness on the top of a poppet in type (B) has a great effect on the valve performance in the case of converging flow, and a difference in a seat angle in type (C) makes a great change in cavitation condition, flow characteristics and noise level in the case of diverging flow.