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Manual valve of automatic transmission

A manual valve and slide valve technology, applied in the field of manual valves, can solve the problems of lubricating oil affecting shifting feeling and slowing lubricating oil flow rate.

Inactive Publication Date: 2006-07-05
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] However, if the size of the orifice is reduced in order to prevent the immediate release of hydraulic pressure, the oil flow rate will be significantly slower when hydraulic pressure is applied to the U / D clutch or reversing clutch
[0008] In addition, if the size of the orifice is reduced, the viscosity change of lubricating oil (ATF) according to the temperature change will affect the shift feel

Method used

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  • Manual valve of automatic transmission
  • Manual valve of automatic transmission
  • Manual valve of automatic transmission

Examples

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Embodiment Construction

[0047] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0048] A manual valve according to an exemplary embodiment of the present invention includes a valve body 200 and a spool valve 100 .

[0049] Below, refer to Figure 1 to Figure 3 , the structure of the slide valve 100 according to the exemplary embodiment of the present invention will be described in detail.

[0050] The spool valve 100 according to the exemplary embodiment of the present invention includes a central shaft 140, a lower transmission boss assembly 110 formed at one end of the central shaft 140, a connector formed at the other end of the central shaft 140 and connected with a shift control lever. 130, and the reversing boss assembly 120 formed between the lower transmission boss assembly 110 and the connector 130.

[0051] The lower transmission boss assembly 110 includes a first boss 111 and a second boss 112 that are cylindr...

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Abstract

The present invention relates to a manual valve of an automatic transmission, having a groove formed at an exterior surface thereof so as to reduce shock and to improve shift feel by allowing oil to flow through the groove when releasing hydraulic pressure. An exemplary manual valve of an automatic transmission includes a valve body and a valve spool slidably provided in the valve body. The valve body includes a spool receiving part, a first port, a second port, and a third port. The valve spool includes an underdrive land assembly and a reverse land assembly, wherein at least one of the underdrive land assembly and the reverse land assembly has a groove formed on an exterior circumference thereof along a sliding direction of the valve spool such that oil flows therethrough when hydraulic pressure is released.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2004-0108234 filed with the Korean Intellectual Property Office on December 17, 2004, Korean Patent Application No. 10-2004-0111358 filed with the Korean Intellectual Property Office on December 23, 2004, The priority of Korean Patent Application No. 10-2005-0123552 filed on December 15, 2005 in the Korean Intellectual Property Office, the entire contents of which are incorporated by reference into this application. technical field [0003] The invention relates to a manual valve in an automatic transmission. More particularly, the present invention relates to a manual valve in an automatic transmission having grooves formed on its outer surface in order to reduce shock and improve shift feel by allowing lubricating oil to flow through the grooves when hydraulic pressure is released. . Background technique [0004] In a general automatic transmis...

Claims

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Application Information

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IPC IPC(8): F15B13/02
Inventor 李瑨熙
Owner HYUNDAI MOTOR CO LTD
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