Valve driving device, internal combustion engine, engine and vehicle

Abstract

The invention provides a valve driving device, an internal combustion engine, an engine and a vehicle. The valve driving device pushes a main piston to compress hydraulic oil in a second cavity through the extension movement of a telescopic component, and the compressed hydraulic oil in the second cavity will push an upper piston to move in the direction of a lower piston; the upper piston moves to the position in front of a gap adjusting hole, excess hydraulic oil in a third cavity will flow out of the third cavity from the gap adjusting hole, and in the process, the lower piston does not move; the upper piston continues to move to cover the gap adjusting hole, at the moment, the third cavity is a sealed cavity, the movement of the upper piston compresses the hydraulic oil in the third cavity, the compressed hydraulic oil in the third cavity will push the lower piston to move away from the third cavity. The movement of the lower piston pushes a valve to be opened and closed. The valvedriving device can be adjusted according to different working conditions of the rotating speed of the internal combustion engine, has high temperature resistance and stepless adjustable stroke, and can obtain ideal intake and exhaust efficiency at high and low speeds.

Description

technical field [0001] The invention relates to the technical field of passport classification, in particular to a valve driving device, an internal combustion engine, an engine and a vehicle. Background technique [0002] The valve timing mechanism of the internal combustion engine is used to provide the cylinder with fresh air necessary for gasoline combustion and to discharge the exhaust gas after combustion. The main function of the valve timing mechanism is to open and close the inlet and outlet of each cylinder according to a certain time limit. Exhaust valve, so as to realize the whole process of internal combustion engine cylinder ventilation and replenishment. We can compare the valve of internal combustion engine to a door. The size and time of door opening determine the flow of people in and out. The larger the angle of door opening, The longer the opening time, the greater the flow of people entering and leaving, and vice versa. The same principle is applied to ...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a valve driving device, an internal combustion engine, an engine and a vehicle, which are used to solve the problem that the valve driving device in the prior art cannot be adjusted under different operating conditions of the internal combustion engine, and the ideal speed cannot be obtained at high and low speeds. The problem of intake and exhaust efficiency

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