弁機構の力学的研究 : 着座衝撃力のシミュレーションと低減策

概要

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This paper suggests that the shock force working on the valve stem of the internal combustion engine at the valve closing moment has a great influence on the wear of the valve face. The authors have simulated the behavior of valve trains with the new seven mass model. This model gives freedom of motion to the parts so that parts can be separated or made to contact each other while in motion. It is made clear that the predicted data agree fairly well with the experimental data; and it is recognized firstly that the shock force has regular peaks with increasing cam speed. To reduce the shock force, the seven mass model is used thoroughly. The optimum value of the cam ramp velocity and the appropriate range of the stiffness of the valve trains are proposed.
一般社団法人日本機械学会の論文
1986-11-25