Electromagnetic driving valve of internal combustion engine

摘要

The invention provides an electromagnetic driving valve of an internal combustion engine provided with a significantly compact shock absorbing means which can reduce an impact sound and a vibration in a contact portion between a first transmission shaft and a second transmission shaft and reduce an impact sound and a vibration generated at a time when a valve portion sits on an intake and exhaust port at a time of closing a valve. A shock absorbing means (27) is provided between a first transmission shaft (14a) extended upward from a valve portion (3) and a second transmission shaft (14b) extended on the same axis thereof and supporting a movable plate (7) between a pair of electromagnets (5, 6). The shock absorbing means (27) is provided with a contact connecting means (28) connected to an upper end of the first transmission shaft (14a) and freely extending and compressing while maintaining a contact with a lower end of the second transmission shaft (14b), and an oil receiving portion (29) slidably inserting the contact connecting means (28) thereto and gradually discharging a fluid charged in an inner portion thereof together with an upward movement of the contact connecting means (28) at a time of a valve closing operation of the valve portion (3), thereby reducing a valve closing speed of the valve portion (3) via the first transmission shaft (14a).