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Valve Timing Adjusting Apparatus

A technology for adjusting equipment and valve timing. It is used in mechanical equipment, timing lubrication, and controlling the pressure of lubricants. It can solve problems such as reduced rotational phase retention performance and reduced operating speed of vane rotors.

Inactive Publication Date: 2015-05-27
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An increase in leakage between the ports of the sleeve causes a decrease in the operating speed of the vane rotor and a decrease in the holding performance for maintaining the rotational phase of the vane rotor relative to the casing

Method used

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  • Valve Timing Adjusting Apparatus
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  • Valve Timing Adjusting Apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0035] figure 1 A valve timing adjusting device according to a first embodiment of the present disclosure is shown. The valve timing adjusting device 5 adjusts the valve timing of an intake valve (not shown), which is driven to open and close by a camshaft 202 . Specifically, the valve timing adjusting device 5 adjusts the valve timing of the intake valve by rotating the camshaft 202 relative to the crankshaft 201 of the internal combustion engine 200 . The valve timing adjusting device 5 is placed in a driving force transmission path for transmitting driving force from a crankshaft 201 to a camshaft 202 of the internal combustion engine 200 . The crankshaft 201 serves as a driving side shaft of the present disclosure, and the camshaft 202 serves as a driven side shaft.

[0036] First, refer to figure 1 and 2 The entire structure of the valve timing adjusting device 5 is described.

[0037] Such as figure 1 and 2 As shown in , the valve timing adjustment device 5 includ...

no. 2 example

[0085] will refer to Figure 4-5 , 7-8, 10-11, and 14-24 describe a valve timing adjusting device according to a second embodiment of the present disclosure.

[0086] Such as Figures 14 to 16 As shown in , in the valve timing adjusting device 100 of the present embodiment, the vane rotor 101 includes a laminated portion 102 , a molded portion 51 , a sealing portion 103 and a connecting portion 104 .

[0087] Such as Figure 16 As shown in, the laminated section 102 includes Figure 4 The metal plate 54 shown in, Figure 17 The metal plate 105 shown in, Figure 18 The metal plate 106 shown in, Figure 5 The metal plate 55 shown in, Figure 7 The metal plate 58 shown in, Figure 19 The metal plate 107 shown in, Figure 20 The metal plate 108 shown in, Figure 8 The metal plate 59 shown in, Figure 10 The metal plate 63 shown in, Figure 21 The metal plate 109 shown in, Figure 22 The metal plate 111 shown in, Figure 23 The metal plate 112 shown in, Figure 24 Met...

no. 3 example

[0107] will refer to Figure 25 A valve timing adjusting device according to a third embodiment of the present disclosure is described.

[0108] Such as Figure 25 As shown in , the valve timing adjusting device 130 of this embodiment includes a vane rotor 131 , a laminated portion 132 , a molded portion 51 and a sealing portion 133 .

[0109] The laminated portion 132 includes: the metal plate 54; the metal plate 55; the metal plate 106 and the sealing portion 133 (more specifically, a set of the metal plate 106 and the sealing portion 133 arranged along a common plane); the metal plate 55; the metal plate 58 metal plate 59; metal plate 108 and sealing portion 133 (more specifically, a set of metal plate 108 and sealing portion 133 arranged along a common plane); metal plate 59; metal plate 63; metal plate 64, metal plate 111 and sealing portion 133 (more specifically, a group of metal plates 111 and sealing portion 133 arranged along a common plane); metal plate 64; metal ...

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PUM

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Abstract

A vane rotor includes a laminated portion and seal portions. The laminated portion includes a plurality of metal plates, which are stacked in an axial direction. The seal portions are placed on two axially opposite sides of each of an advancing port, a retarding port, and a supply port. Each seal portion is configured into an annular form to extend along an outer peripheral surface of a sleeve in a circumferential direction and is engaged with the laminated portion to limit deformation of the seal portion toward a radially outer side. The seal portion is made of a material that has a thermal expansion coefficient, which is larger than a thermal expansion coefficient of a material of each metal plate.

Description

technical field [0001] The present disclosure relates to a valve timing adjustment device. Background technique [0002] A known valve timing adjusting device includes: a housing that rotates integrally with a crankshaft of an internal combustion engine; and a vane rotor that rotates integrally with a camshaft. Such a valve timing adjusting device adjusts the valve timing of an intake valve or an exhaust valve by changing the rotational phase of a vane rotor relative to a housing. The rotational phase of the vane rotor is changed by supplying working oil to an advance chamber or a retard chamber defined in the housing. For example, JP2005-351182A discloses a vane rotor including a plurality of metal plates stacked on each other in the axial direction. [0003] The inventors of the present application have proposed to place an oil pressure control valve (the oil pressure control valve supplies working oil to an advance chamber or a retard chamber) at a center portion of a v...

Claims

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Application Information

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IPC IPC(8): F01L1/34
CPCF01L1/3442F01L2001/34433F01M1/00F01M1/14F01M1/16F01L2301/00F01L2303/00F01L1/34
Inventor 林将司
Owner DENSO CORP
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