Novel valve driving mechanism
A driving mechanism and valve technology, applied in the direction of engine components, valve driving devices, machines/engines, etc., can solve the problems of camshaft profile wear, affecting the combustion process and performance, oil leakage, etc., to ensure long-term work, guarantee Maintenance-free, wear-reducing effect
Inactive Publication Date: 2021-09-03
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology
As the engine works for a long time, the traditional camshaft profile will be worn, which seriously affects the normal movement of the valve, further affects the engine performance, and even affects the life of the engine
[0003] In addition, when the traditional valve driving mechanism is working, when the valve moves downward and opens, a lateral force will be applied to the valve. After a long time of work, the rod and the valve guide will be worn, and when the wear is serious, oil will leak to the valve head. , when the valve is opened, the engine oil will flow into the cylinder, affecting the combustion process and performance, and also increasing the engine oil consumption
Method used
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[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention provides a novel valve driving mechanism. The novel valve driving mechanism comprises an opening spring, a moving rod, a rotating shaft, a driving wheel, a valve, a closing spring, a spring disc and a valve rotating mechanism; one end of the closing spring is fixedly connected with the spring disc, and the other end of the closing spring is fixedly connected with the valve rotating mechanism installed on a cylinder cover; the top end of the air valve penetrates through the air valve rotating mechanism to be connected with the spring disc; the middle of the moving rod is connected with the rotating shaft, and the moving rod can rotate along the rotating shaft; and one end of the moving rod is in contact fit with the driving wheel, the other end of the moving rod is simultaneously connected with the spring disc and one end of the opening spring, the other end of the opening spring is fixedly connected with an engine body, and the opening spring is in a pre-compressed state. According to the novel valve driving mechanism, the opening spring is additionally arranged, and the opening motion rule of the valve is jointly controlled by the pre-compressed opening spring and the moving rod; and opening of a traditional valve completely depends on a cam shaft and is converted into common bearing of the opening spring and the driving wheel, so that the abrasion of a traditional cam is greatly reduced.
Description
technical field [0001] The invention belongs to the technical field of valve driving mechanism, and in particular relates to a novel valve driving mechanism. Background technique [0002] Traditional valve drive mechanisms include overhead camshafts, push-jack mechanisms, etc., all of which are inseparable from the drive of the cam peach shape. The valve opening and closing movement rules are completely dependent on the cam profile. The design and processing of the cam profile must fully consider the speed of the valve. , Acceleration and whether there is rebound when closing, etc. As the engine works for a long time, the traditional camshaft profile will be worn, which seriously affects the normal movement of the valve, further affects the engine performance, and even affects the life of the engine. [0003] In addition, when the traditional valve driving mechanism is working, when the valve moves downward and opens, a lateral force will be applied to the valve. After a lo...
Claims
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IPC IPC(8): F01L3/10F01L1/02F01L1/04
CPCF01L3/10F01L1/02F01L1/04
Inventor 尹天佐王增全王祥丞张明亮
Owner CHINA NORTH ENGINE INST TIANJIN