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valve timing control device

A valve timing control, hydraulic control valve technology, applied in the direction of valve devices, engine components, machines/engines, etc., can solve problems such as difficult to use transmission belts

Active Publication Date: 2017-09-29
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to use a drive belt such as a toothed belt, a flat belt, or a V-belt in the driving force transmission mechanism between the crankshaft of the engine and the housing in the valve timing control device.

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0018] Figure 1-4 A first embodiment of the invention is shown. The valve timing control device 1 of this embodiment is used for image 3 In the driving force transmission mechanism of the internal combustion engine 2 of a vehicle (such as an automobile) shown. The driving force transmission mechanism is arranged inside the engine cover 3 . In the driving force transmission mechanism, a transmission belt 17 is wound around the pulley 12 , the pulley 15 and the pulley 16 . A pulley 12 is fixed to a crankshaft 11 serving as a drive-side shaft of the engine 2 . A pulley 15 is fixed to a camshaft 13 serving as a driven side shaft, and a pulley 16 is fixed to a camshaft 14 serving as a driven side shaft. The torque of the crankshaft 11 is transmitted to the camshafts 13 , 14 via a belt 17 . The camshaft 13 drives the intake valve 18 to open and close the intake valve 18 . The camshaft 14 drives the exhaust valves 19 to open and close the exhaust valves 19 . In the valve tim...

no. 2 example

[0079] Figure 5 A second embodiment of the invention is shown. In the following embodiments, components similar to those of the first embodiment will be indicated by the same reference numerals and will not be described again for simplicity.

[0080] In the second embodiment, the first tubular portion 91 extending from the housing 20 is fitted onto the outer peripheral wall (radially outer section) of the second tubular portion 92 extending from the solenoid main body 51 . Specifically, the inner peripheral wall section (also referred to as a radially inner section) 93 b of the first guide portion 93 formed as a part of the inner peripheral wall of the first tubular portion 91 is separated from the outer peripheral wall formed as the second tubular portion 92 . A portion of the outer peripheral wall section (also referred to as a radially outer section) 94b of the second guide portion 94 is in sliding contact. Thus, the housing 20 is substantially coaxially aligned with the...

no. 3 example

[0084] Figure 6 A third embodiment of the present invention is shown as a modification of the first embodiment. In the third embodiment, the second tubular portion 92 is formed separately from the solenoid main body 51 and mounted to the engine cover 3 . The inner peripheral wall of the second tubular portion 92 is in contact with the cylindrical portion 53 of the solenoid main body 51 . The cylindrical portion 53 and the press pin 52 are substantially coaxial with each other. Thus, the second tubular portion 92 is mounted substantially coaxially with the solenoid 50 .

[0085] The housing 20 and the second tubular portion 92 are held substantially coaxially with each other by sliding contact between the first guide portion 93 of the first tubular portion 91 and the second guide portion 94 of the second tubular portion 92 . Since the second tubular portion 92 and the solenoid 50 are substantially coaxial with each other, the housing 20 and the solenoid 50 are substantially...

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Abstract

A hydraulic pressure control valve is received in a center hole of a vane rotor that is rotatable relative to a housing. A first tubular portion and a second tubular portion are fitted with each other to form an oil accumulation chamber. The oil accumulation chamber accumulates at least one of oil outputted from a gap between the housing and the vane rotor, and oil discharged from an oil passage communicated with the advancing chamber or the retarding chamber.

Description

technical field [0001] The present invention relates to a valve timing control device which controls opening timing and closing timing of an intake valve or an exhaust valve of an internal combustion engine. Background technique [0002] A known valve timing control device controls the opening timing and closing timing of an intake valve or an exhaust valve by changing the rotational phase between a crankshaft and a camshaft of an internal combustion engine installed in, for example, a vehicle. [0003] JP2009-515090A (corresponding to US2007 / 0095315A1) describes a valve timing control device including a hydraulic control valve installed in a vane rotor rotatable relative to a housing. More specifically, the hydraulic control valve is installed in the central hole of the vane rotor, which extends in the direction of the rotation axis of the vane rotor. The hydraulic control valve switches from one oil passage to the other to supply oil received from the oil pump to an advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/34
CPCF01L1/3442F01L2001/34426F01L2001/34433F01L2001/34446
Inventor 木野内惣一
Owner DENSO CORP