Vibration Analysis of High Rigidity Driven Valve System of Internal Combustion Engines

✍ Scribed by K. Nagaya; K. Watanabe; Y. Tsukahara

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 356 KB
• Volume: 165
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1993.1241

✦ Synopsis

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