Camshaft toggle solenoid valve for a variable valve lift system

A valve lift, camshaft technology, applied to non-mechanically actuated valves, valve devices, engine components, etc., can solve problems such as increased response time

CN111335979BActive Publication Date: 2021-05-25JAPHL POWERTRAIN SYST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-05-25

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Abstract

The invention provides a camshaft toggle solenoid valve for a variable valve lift system applied in the technical field of an engine variable valve lift system. The camshaft toggle solenoid valve for a variable valve lift system includes a casing ( 1), the casing (1) is provided with an electromagnetic coil (2), the electromagnetic coil (2) is provided with a sleeve (3), the sleeve (3) is provided with a magnetic core body (4), and the magnetic core body (4) is connected with the drive The rod (5) is connected, and a strong magnet (6) is arranged at one end of the shell (1), and the magnetic core body (4) is close to the strong magnet (6). The variable valve lift system of the present invention uses a camshaft to toggle the solenoid valve, The structure is simple, and the extension and contraction of the drive rod can be reliably realized, so that under the control of the control component, under the specific working conditions of the engine, the axial movement control of the camshaft can be effectively realized through the drive rod. The track groove on the camshaft cooperates to realize the switching of high and low cams and improve the overall performance of the engine.
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Description

technical field

[0001] The invention belongs to the technical field of engine variable valve lift systems, and more specifically relates to a camshaft toggle electromagnetic valve for a variable valve lift system. Background technique

[0002] In the technical field of the engine variable valve lift system, it is necessary to realize the axial change of the camshaft, but in the prior art, the control is realized through the expansion and contraction of the driving rod of the solenoid valve. The solenoid valves in the prior art mainly have the following defects: 1. As a direct driving force, the electromagnetic force attenuates significantly at high temperatures, resulting in increased response time at high temperatures. 2. The electromagnetic force is used as the direct driving force. To drive the driving rod after overcoming the elastic force of the return spring, the electromagnetic force must be increased by increasing the size of the solenoid. 3. The holding force of th...

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Embodiment Construction

[0029] Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

[0030] as attached figure 1 - attached Figure 5 As shown, the present invention is a camshaft toggle solenoid valve for a variable valve lift system, which includes a casing 1, an electromagnetic coil 2 is arranged inside the casing 1, an inner sleeve 3 is arranged inside the electromagnetic coil 2, and a magnetic core is arranged inside the upper sleeve 3 body 4, the magnetic core body 4 is connected with the driving rod 5, a strong magnet 6 is arranged at one end of the shell 1, and the magnetic core body 4 is close to the strong magnet 6. The strong magnet 6 of the camshaft toggle solenoid valve described in the ...