The invention discloses an engine intake valve
continuous variable system and an engine. The intake valve
continuous variable system comprises a base and a
tappet rod, wherein the
tappet rod is arranged on the base in a sliding mode; the
tappet rod comprises a push rod and a valve core, the valve core is provided with a first pressure chamber, a first
plunger is arranged in the first pressure chamber, and a push rod oil
inlet channel is in communication with the first pressure chamber; a one-way valve is arranged in a base communication oil channel, an oil drainage channel is in communicationwith an oil
inlet channel and the second pressure chamber, a second
plunger is arranged in the second pressure chamber, an adjustable limiting device for adjusting the
maximum displacement of the second
plunger is arranged in the second pressure chamber, and the second plunger abuts against the side wall of the second pressure chamber under the action of a reset piece; and an oil drainage valve isarranged in an oil drainage hole of the oil drainage channel, and the oil drainage valve is opened when the oil drainage valve is in contact with the bottom of the valve core. According to the intakevalve
continuous variable system, a mechanical structure is adopted, the
oil supply is completed by utilizing the engine
oil pressure of the engine lubricating oil path, the robustness and the reliability of the system are guaranteed, the cost and the
energy consumption are reduced, the continuous adjustment of the closing timing of the multi-cylinder intake valve can be realized, and the performance of the engine is improved.