傾斜リングピストンによるピストンスラップの低減(第2報) : ピストンスラップの実験と検討

概要

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Effect of inclined ring piston on piston slap reduction are studied and discussed experimen-tally in this paper. Inclined ring piston and experimental system on piston slap are designed and manufactured. Then, piston slap measurements are carried out in six kinds of piston crank devices equipped with known piston and five kinds of inclined ring pistons respectively. Their experimental results are compared with computation results of piston side thrust force and discussed. These results are summarized as follows. (1) The occurrence of severe piston slap is due to large magnitude and abrupt direction-variation of piston side thrust force. (2) Abrupt direction-variation of piston side thrust force can be removed by utilizing inclined ring piston instead of known piston, whose inclined direction angle is larger than 45° and smaller than 135°. (3) It is ascertained experimentally that the piston crank device, which is equipped with the above inclined ring piston, has no severe piston slap phenomena.
1985-11-05