| 초록 |
Variable valve timing system with hydraulic damper is studied for the variation of valve lifts, which is closely related to fuel consumption. In this mechanism, the flow through the orifice into the main cHamber changes in a cycle as the push of cam plunger that is the same as the cam displacement. In consequence, the flow into the main chamber actuates the valve lift. However, the pushing speed of cam plunger that is directly related to engine speed controls the flow rates into the main chamber. |
