公开(公告)号：US11319844B2

公开(公告)日：2022-05-03

申请号：US17129447

申请日：2020-12-21

Applicant: Harbin Engineering University

Inventor： Jie Guo ,  Zhuang Zhao ,  Wenping Zhang ,  Xinyu Zhang

IPC: F01L9/10 ,  F01L9/40 ,  F01L13/00

Abstract: A fully variable valve train with a rotary plunger for an internal combustion engine. A motor actuates a high-pressure oil injection pump; when a timing driven electromagnetic valve connected to an oil inlet is opened, high-pressure oil enters a hydraulic cylinder; and when the force applied to a plunger by the hydraulic oil is larger than the force of a valve returning spring, the plunger is pushed to move down, so that a valve is opened. When the valve is required to be return, the timing driven electromagnetic valve connected to the oil inlet is closed, and the timing driven electromagnetic valve connected to the oil inlet is opened; the valve moves up under the action of the valve spring, pushing the plunger to move up and thereby discharging the low-pressure oil out of the hydraulic cylinder, then the plunger and the valve return to the initial positions.

公开(公告)号：US20210199030A1

公开(公告)日：2021-07-01

申请号：US17129447

申请日：2020-12-21

Applicant: Harbin Engineering University

Inventor： Jie Guo ,  Zhuang Zhao ,  Wenping Zhang ,  Xinyu Zhang

IPC: F01L9/10 ,  F01L9/40 ,  F15B11/08 ,  F15B1/02 ,  F15B21/041

Abstract: A fully variable valve train with a rotary plunger for an internal combustion engine. A motor actuates a high-pressure oil injection pump; when a timing driven electromagnetic valve connected to an oil inlet is opened, high-pressure oil enters a hydraulic cylinder; and when the force applied to a plunger by the hydraulic oil is larger than the force of a valve returning spring, the plunger is pushed to move down, so that a valve is opened. When the valve is required to be return, the timing driven electromagnetic valve connected to the oil inlet is closed, and the timing driven electromagnetic valve connected to the oil inlet is opened; the valve moves up under the action of the valve spring, pushing the plunger to move up and thereby discharging the low-pressure oil out of the hydraulic cylinder, then the plunger and the valve return to the initial positions.