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Engine air valve lift stepless regulating mechanism

An engine valve, stepless adjustment technology, applied in the direction of engine components, engine control, machine/engine, etc., to achieve the effect of improving adjustment accuracy, reducing the strength of components, and improving structural performance

Inactive Publication Date: 2009-01-07
黎伟权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, and design a stepless adjustment mechanism for the engine lift with simple structure, high stability and long service life, so as to improve the power of the engine and realize fuel economy and reduce environmental pollution. Pollution

Method used

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  • Engine air valve lift stepless regulating mechanism
  • Engine air valve lift stepless regulating mechanism
  • Engine air valve lift stepless regulating mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 A valve lift stepless adjustment mechanism for an engine is shown. A valve mechanism 2 and a jack mechanism 4 are respectively installed on the cylinder head 1 of the engine. One end 33 of the rocker arm 3 is pressed on the valve mechanism 2, and the other end is connected to the jack The upper jack post 41 of column mechanism 4 is hinged by hinge 32, and cam mechanism 5 rotates and suppresses the pulley 31 in the middle part of rocker arm 3, and pushes rocker arm 3 to suppress valve mechanism 2 to open. The improved structure of this patent is that the cylinder head 1 is provided with a jack sleeve 11 for accommodating the jack mechanism 4, and the jack mechanism 4 is composed of an upper jack 41, a lower jack 43 and a spring 42 between the upper and lower jacks, The upper and lower top posts are provided with ring grooves for installing springs 42 . A stepless adjustment mechanism 6 is provided on the lower side of the lower jack 43 for adjusting the...

Embodiment 2

[0032] from Figure 8 It can be seen that another implementation structure of the present invention differs from the previous embodiment mainly in the structure of the stepless adjustment mechanism 6 . combine Figure 9 It can be seen in more detail that the stepless adjustment mechanism 6 includes a motor 61 and a wedge-shaped support block 64, and the motor 61 cooperates with the rack through the gear. The wedge-shaped support block 64 is driven to slide back and forth, and its inclined surface supports the lower top column 43 to slide up and down. When the motor 61 drives the wedge-shaped support block 64 to move to the right, the lower support column 43 moves upward, and when the motor 61 drives the wedge-shaped support block 64 to move to the left, the lower support column 43 moves downward, thereby realizing stepless adjustment The purpose of the gap between the upper and lower top columns is shown by the arrow in the figure.

Embodiment 3

[0034] Figure 10 For Embodiment 2 of this patent, its detailed structure is analyzed in conjunction with the views of FIG. 11 . The stepless adjustment mechanism includes a rack 44 connected to the lower side of the lower top post 43 and a gear 65 matched with the rack 44 , the gear is driven by a motor 61 through a gear mechanism 62 . When the motor 61 is started, the gear mechanism 62 drives a set of gears 65 to rotate, thereby driving the rack 44 to push the lower jack 43 up and down to adjust the position of the lower jack 43, as shown by the arrows in the figure.

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Abstract

The present invention relates to the field of an engine valve lift range adjusting mechanism. A technical problem to be solved is to overcome the prior technical disadvantages and design an engine lift range stepless adjusting mechanism with simple structure, high stability and long service life, so as to improve the power of the engine, realize the economization of fuel and reduce environmental pollution. The structure of the engine lift range stepless adjusting mechanism comprises a valve mechanism arranged on an engine cylinder cover, a rocker with one end pressed on the valve mechanism, a top pillar mechanism and a cam mechanism which drives a pulley at the middle part of the rocker. The improved structure of the engine lift range stepless adjusting mechanism is that the top pillar mechanism comprises a top pillar sleeve arranged on the cylinder cover, an upper top pillar arranged in the top pillar sleeve, a lower top pillar, a spring installed between the upper and the lower top pillars and a stepless adjusting mechanism which supports the lower top pillar and slides up and down in the top pillar sleeve, and the upper top pillar is articulated with the other end of the rocker.

Description

technical field [0001] The invention relates to the field of an engine valve lift adjustment mechanism, and more specifically relates to an engine valve lift stepless adjustment mechanism capable of stepless valve adjustment, good in structure and long in service life. Background technique [0002] The engine has certain requirements on the gas distribution system under different working environments and different loads. For example, when the engine is running at low speed, the air intake efficiency is low, the gas flow inertia is small, and the excessive valve lift will affect the generation of intake vortex, which is not conducive to the mixing of fuel and air, resulting in excessive emissions and reduced engine power. . When the engine rotates at a high speed, a larger valve lift is required to allow a large amount of air to enter the engine. Due to the existence of the throttle valve, it will hinder the air from entering the engine, resulting in a decrease in engine pow...

Claims

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Application Information

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IPC IPC(8): F02D13/02F01L13/00
Inventor 黎伟权
Owner 黎伟权