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Variable valve timing control device

A control device and valve timing technology, applied to valve devices, engine components, machines/engines, etc., can solve problems such as misoperation of variable valve timing control systems

Inactive Publication Date: 2005-02-02
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the lock may not be received by the back-off groove, causing malfunction of the variable valve timing control system

Method used

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  • Variable valve timing control device
  • Variable valve timing control device
  • Variable valve timing control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Embodiments of the present invention will be described below with reference to the drawings.

[0014] Figure 1-4 The shown variable valve timing control device 1 includes a rotary member 2 for opening / closing a valve, the rotary member 2 includes a camshaft 10 rotatably supported on a cylinder head 100 of an internal combustion engine and integrally fixed to the tip of the camshaft 10 part of the inner rotor 20. The variable valve timing control device 1 also includes a rotation transmitting member 3 having an outer rotor 30 rotatable within a predetermined range relative to the inner rotor 20 , a front plate 40 and a rear plate 50 . The timing sprocket 31 is integrally formed on the outer circumference of the outer rotor 30 . In addition, the variable valve timing control device 1 includes a torsion spring 60 disposed between the inner rotor 20 and the front plate 40, four vanes 70 assembled to the inner rotor 20, and a lock plate 80 assembled to the outer rotor 30 ...

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PUM

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Abstract

A variable valve timing control device includes a rotating member, a rotation transmitting member and a retracting portion accommodating a lock member biased by a spring. The variable valve timing control device further includes a spring receiving bore connected to the retracting portion for accommodating the spring and including a guide portion for guiding the spring in the axial direction, a receiving portion into which a head portion of the lock member is inserted at a predetermined relative rotation phase. A length of the guide portion in the axial direction is larger than each distance formed between windings of the spring adjacent to each other in the axial direction.

Description

technical field [0001] The present invention relates to variable valve timing control devices. More particularly, the present invention relates to a variable valve timing control device for controlling the timing of opening and closing of an intake valve and an exhaust valve of an internal combustion engine. Background technique [0002] A known variable valve timing control device is disclosed in Japanese Patent Laid-Open Publication No. 2003-13713. The disclosed variable valve timing control device includes a rotary member integrally connected to a camshaft for opening and closing a valve, and a rotation transmitting member to which rotational force from a crankshaft is transmitted. The rotation transmitting member is assembled to the rotating member so as to be rotatable relative to the rotating member within a predetermined range. The variable valve timing control device further includes vanes each assembled to the rotary member and dividing a fluid chamber defined in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/34F01L1/344
CPCF01L2001/34473F01L1/022F01L1/3442F01L2001/34469F01L2001/34483
Inventor 小林昌树川合启之
Owner AISIN SEIKI KK