| 摘要 |
A variable tappet is provided to lower the production cost by implementing the general valve lift mode and CDA mode in a simple configuration. A variable tappet comprises an outer housing(100), an inner housing(200) placed inside the outer housing, a plunger(300) which is connected to a valve(600) and moves up and down in the inner housing, a lost motion spring(250) providing the restoring force for the plunger, a connector(400) which selectively joins the inner housing and the plunger, and an oil pressure supply part(500) operating the connector. The oil pressure supply part includes a first supply hole(510), an inner flow path(520) provided with oil pressure from the first supply hole, and a second supply hole(530) supply oil pressure to the connector. The connector includes a control pin(410) provided with oil pressure from the second supply hole, a locking pin(420) inserted into the plunger by the control pin, and a locking pin elastic member(430) providing restoring force for the locking pin. The inner housing has a groove(210) to make the oil pressure supply form the second supply hole smooth.
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