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Variable valve duration adjusting device

A technology of duration and adjustment devices, which is applied in the direction of valve devices, internal combustion piston engines, engine components, etc., can solve the problems of relatively high structural strength and precision requirements, large weight, and large volume of adjustment devices, and meet the strength and accuracy requirements No height, improved performance, small size effect

Inactive Publication Date: 2022-01-18
周旭亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a variable valve duration adjustment device, which solves the problem that the adjustment device in the prior art has large volume, heavy weight and relatively high requirements for structural strength and precision. question

Method used

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  • Variable valve duration adjusting device

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Experimental program
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Embodiment 1

[0038] refer to figure 1 and figure 2 , the invention provides a variable valve duration adjustment device. The device includes an inner shaft 1 , an outer shaft 2 , a transmission assembly 3 and a controller 4 . Wherein, the inner shaft 1 and the outer shaft 2 are connected through the transmission assembly 3, and the controller 4 is used to control the transmission assembly 3 to move in the radial direction, so that the axis line of the transmission assembly 3 is aligned with the axis line of the inner shaft 1 and the outer shaft 2 Coincidence or non-coincidence is used to control the rotational speed of the outer shaft 2, thereby controlling the duration of opening or closing of the valve 7 connected to the outer shaft 2.

[0039] Specifically, the inner shaft 1 is a drive shaft, operable and concentrically inserted into the lumen of the outer shaft 2 . One end of the inner shaft 1 is connected with the transmission assembly 3 , and the transmission assembly 3 is driven...

Embodiment 2

[0066] refer to Figure 10 , with respect to Example 1, in figure 2 In the initial position shown, the first link 31 is turned upward by 180°, and the first link 31 is ensured to be parallel to the second link 32 . At this time, the first connecting rod 31 is used as a push rod, and the second connecting rod 32 is used as a pull rod. In order to ensure the stability of the structure, the thickness of the intermediate connecting plate of the first connecting rod 31 needs to be larger than the thickness of the intermediate connecting plate of the second connecting rod 32. Thickness setting. Other structures are the same as in Example 1. Of course, the present invention can also be used in figure 2In the initial position shown, the second link 32 is turned up by 180°.

[0067] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying rel...

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Abstract

The invention relates to the technical field of automobile engine valves, in particular to a variable valve duration adjusting device which comprises an inner shaft, an outer shaft, a transmission assembly and a controller. The inner shaft is a driving shaft and is inserted into an inner cavity of the outer shaft, and the axes of the inner shaft and the outer shaft coincide; the transmission assembly comprises a first hinge piece, a second hinge piece and a transmission ring; the inner shaft and the outer shaft penetrate through the transmission ring, and the outer shaft and the transmission ring are spaced in the radial direction; in an initial state, the axis of the transmission ring coincides with the axes of the inner shaft and the outer shaft; the inner shaft is connected with the transmission ring through the first hinge piece, and the transmission ring is connected with the outer shaft through the second hinge piece; the controller controls the transmission ring to move in the radial direction, so that the axis of the transmission ring coincides with or does not coincide with the axes of the inner shaft and the outer shaft, so as to control the rotating speed of the outer shaft; and the outer shaft is a cam shaft which is connected with a valve through a valve rocker so as to open or close the valve. By changing the position of the transmission ring, the valve opening or closing duration is adjusted, tail gas emission is improved, and environment friendliness is achieved.

Description

technical field [0001] The invention relates to the technical field of automobile engine valves, in particular to a variable valve duration adjustment device. Background technique [0002] The function of the valve is to be responsible for inputting air into the engine and discharging the exhaust gas after combustion. From the structure of the engine, it is divided into intake valve and exhaust valve. The role of the intake valve is to draw air into the engine and mix it with fuel for combustion; the role of the exhaust valve is to discharge the burned exhaust gas and dissipate heat. [0003] At present, there are many devices for adjusting variable valve timing and lift on the market, but it is rare to adjust the variable valve duration. According to relevant reports, Hyundai Motor has published a CVVD (Continuously Variable ValveDuration) engine valve adjustment mechanism, which can adjust the duration of the variable valve. The key of CVVD is that the cam and the camsh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/00F01L1/053F02D13/02F01L1/047
CPCF01L13/00F01L1/053F02D13/0215F01L2001/0473Y02T10/12
Inventor 周旭亮
Owner 周旭亮