弁取付荷重を考慮した高速エンジン動弁系のジャンプ・バウンス現象の解析

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  • Effects of set force of the valves spring on the jump and bounce phenomena of high speed driven valve systems of internal combustion engines.
  • ベン トリツケ カジュウ オ コウリョシタ コウソク エンジン ドウベンケイ

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Much resarch on the dynamic response of driven valve systems of internal combustion engines has been reported. However, the analytical model proposed in the previous reports constructed under the assumption that the valve did not separate from the rocker arm during the cam rotation. This model is applicable to the system with small rigidities. Recently, to have stable motion in high speed engines, the rigidity of the valve system increases, so that the previous model cannot be applied to the engines. This paper proposes a method for obtaining the jump and bounce phenomena of the valve system with large rigidities by considering the set force of the valve spring which gives large effects on the valve response. Numerical calculations have been carried out for one of the recest engines, and the experimental tests also have been performed to verify the present analysis.

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