Engine valve tappet, engine and vehicle

Abstract

The invention provides an engine valve tappet, an engine and a vehicle, wherein, the engine valve tappet comprises a tappet shell and a hydraulic cylinder formed by the tappet shell, an externally connected electromagnetic oil pressure control valve controls the oil pressure that flows into the hydraulic cylinder, the engine valve tappet further comprises: a movable plunger, arranged in the hydraulic cylinder, and dividing the hydraulic cylinder into a first airtight cavity and a second airtight cavity, wherein the first airtight cavity is connected with an engine oil circulation hole, and a part of the movable plunger stretches out of the tappet shell from the interior of the second airtight cavity; an elastic element, arranged in the second airtight cavity, wherein one end of the elastic element is connected with the movable plunger, and the other end is connected with the tappet shell; the electromagnetic oil pressure control valve controls the oil pressure flowing into the first airtight cavity in the hydraulic cylinder via the engine oil circulation hole, so as to make the movable plunger move under the action of the oil pressure and the elastic force of the elastic element, and the length of the part that stretches out of the tappet shell changes. The scheme provided by the invention has a simple and compact structure, is easy to control, improves the comfortable degree of the vehicle, and reduces the noise of a valve mechanism.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an engine valve tappet, an engine and a vehicle. Background technique [0002] In recent years, the use of vehicles has become more and more extensive; people's demand for vehicles is increasing, and the requirements for the comfort of vehicles are getting higher and higher. However, in the vehicle production process, due to the large temperature difference between the working state and the non-working state of the gas distribution mechanism of the gasoline engine, the traditional engine mechanical tappet needs to be selected according to the gap between the valve and the camshaft to control the valve tappet and the valve tappet. The gap between the camshafts is used to adapt to such a large temperature difference change, so that the selection of the engine valve tappet is difficult to control and the valve mechanism is prone to noise, which affects production efficiency and doe...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an engine valve tappet, an engine and a vehicle, so as to solve the problem that the valve mechanism of the vehicle in the prior art is prone to noise and the matching of the engine valve tappet is not easy to control, which affects production efficiency and does not satisfy Questions about people's requirements for vehicle comfort

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