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Valve timing control device

A control device and valve timing technology, applied to valve devices, valve details, engine components, etc., can solve problems such as leakage, wear of cylindrical parts, and reduced sealing of contact surfaces

Inactive Publication Date: 2017-05-10
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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Examples

Experimental program
Comparison scheme
Effect test

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

In order to achieve excellent control responsiveness of the relative rotation phase and easy work fluid flow passage formation, this valve timing control device comprises: a drive-side rotating body; a driven-side rotating body; a cylindrical member inside of the driven-side rotating body; a cylindrical bolt which links a camshaft and the driven-side rotating body inside of the cylindrical member; an introduction path which is disposed in the bolt and / or the cylindrical member and circulates the work fluid in the direction of the rotational axis; an introduction communication passage which is provided in the bolt and circulates the work fluid in the introduction path into the inside of the bolt; an advanced angle communication passage and a retard angle communication passage in different positions in the longitudinal direction of the rotational axis; and a control valve body which reciprocates inside of the bolt in the direction of the rotational axis and supplies the work fluid to the advanced angle communication passage or the retard 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 Applications(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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