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valve timing control

A technology of control device and valve timing, applied in valve device, valve detail, machine/engine, etc., can solve the problems of wear, leakage, and sealing loss of contact surface of cylindrical parts.

Inactive Publication Date: 2019-06-28
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, with the reciprocating movement of the control valve body, the cylindrical member is prone to wear due to friction, which easily leads to a decrease in the sealing performance of the contact surface between the control valve body and the cylindrical member, thereby causing the working fluid to flow from the control valve body to the cylindrical member. The problem of leakage at the contact surface between cylindrical parts

Method used

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Experimental program
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no. 1 approach

[0054] Figure 1 to Figure 6 A valve timing control device A according to the present embodiment is shown, which controls the opening and closing timing of the intake valve E1 in the engine E for an automobile.

[0055] Valve timing control device A such as figure 1 , figure 2 As shown, there is an aluminum alloy casing 1 that can rotate synchronously with the crankshaft E2 of the engine E, and is supported on the inside of the casing 1 so as to be rotatable on the same rotation axis X, and is connected to the intake valve for opening and closing. The inner rotor 3 made of aluminum alloy rotates integrally with the camshaft 2 .

[0056] Inside the inner rotor 3 are provided resin or aluminum alloy sleeves 4 and steel OCV bolts 5 for connecting the inner rotor 3 and the camshaft 2 .

[0057] The OCV bolt 5 passes through and is provided inside the sleeve 4, and is formed into a cylindrical shape including a cylindrical shaft portion 5c having an internal space 5a opened at ...

no. 2 approach

[0101] Figure 7 Shown is a valve timing control device A of the second embodiment.

[0102] The difference between the valve timing control device A of this embodiment and the first embodiment is that the introduction path 13c is provided on the outer peripheral surface of the cylindrical shaft portion 5c, and at the same time, the connection between the advance angle communication path 14a and the advance angle flow path 8a is advanced. The angled annular flow path 9 a and the retarded angle annular flow path 9 b communicating the retarded angle communication path 14 b with the retarded angle flow path 8 b are provided on the outer peripheral surface of the sleeve 4 .

[0103] The structure of other parts is the same as that of the first embodiment.

no. 3 approach

[0105] Figure 8 , Figure 9 Shown is a valve timing control device A of a third embodiment.

[0106] The difference between the valve timing control device A of this embodiment and the first embodiment is that the introduction path 13c is provided on the inner peripheral surface of the sleeve 4, and at the same time, the advance angle communication path 14a and the advance angle flow path 8a are advanced. The angular annular flow path 9 a and the retarded angle annular flow path 9 b connecting the retarded angle communication path 14 b and the retarded angle flow path 8 b are provided on the inner peripheral surface of the inner rotor 3 .

[0107] The structure of other parts is the same as that of the first embodiment.

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Abstract

To obtain a valve opening and closing timing control apparatus where a flow passage of working fluid may be easily defined and which improves control responsiveness of a relative rotational phase. The valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a tubular member provided at an inner portion of the driven-side rotation member, a bolt in a tubular form provided at an inner side of the tubular member to connect the driven-side rotation member and a camshaft to each other, an introduction passage provided at least at one of the bolt and the tubular member between the bolt and the tubular member and bringing a working fluid to flow in the rotation axis direction, an introduction communication passage provided at the bolt to bring the working fluid at the introduction passage to flow to an inner side of the bolt, an advanced angle communication passage and a retarded angle communication passage provided at different positions from each other in a longitudinal direction of the rotation axis, and a control valve body provided at the inner side of the bolt to reciprocate in the rotation axis direction and supplying the working fluid to the advanced angle communication passage or the retarded angle communication passage.

Description

technical field [0001] The present invention relates to a valve timing control device which has a driving side rotating body which rotates synchronously with a drive shaft of an internal combustion engine, and a driven side rotating body which rotates integrally with a valve opening and closing camshaft of an internal combustion engine, and which changes the driving side rotation. The relative rotational phase between the rotating body and the driven side rotating body. Background technique [0002] The valve timing control devices disclosed in Patent Documents 1 to 3 include cylindrical bolts for connecting the driven-side rotating body and the camshaft, and are provided with an introduction path along the longitudinal direction of the rotation axis as an advance angle chamber and The lag angle chamber supplies the flow path of the working fluid. [0003] The bolt is provided with an advanced angle communication path and a retarded angle communication path that pass throug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/356
CPCF01L1/3442F01L1/047F01L1/0532F01L2001/0476F01L2001/34426F01L2001/3443F01L2001/34433F01L2001/3445F01L2001/34463F01L2001/34469F01L2001/34479F01L2001/34483F01L2250/02F01L2820/041
Inventor 野口祐司朝日丈雄榊原徹
Owner AISIN SEIKI KK
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