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Transmission system for shift by wire

By controlling the operating frequency of the solenoid, using an initial high duty cycle DC current and a maintenance time PWM current signal, the problem of malfunction and damage to the solenoid caused by long-term DC current operation is solved, and the wire-controlled shift is improved. Transmission system reliability.

Inactive Publication Date: 2013-06-19
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the prior art transmission system for shift-by-wire, the solenoid is continuously operated by DC current from initial operation to maintenance operation, so that malfunction or damage often occurs due to high / high temperature of operation

Method used

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  • Transmission system for shift by wire
  • Transmission system for shift by wire
  • Transmission system for shift by wire

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Embodiment Construction

[0020] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be appreciated that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also alternatives, modifications, equivalents and other alternatives, modifications, equivalents and other alternatives, modifications, equivalents and other alternatives, which may be included within the spirit and scope of the invention as defined by the appended claims. Specific implementation plan.

[0021] Hereinafter, an automatic transmission system for shift-by-wire according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] figure 1 ...

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Abstract

The automatic transmission system includes a shift lever for changing stages by a user, a shift-lock device for fixing or releasing the shift lever, and a control unit including a shift control logic changing the stages of the transmission in accordance with the stage changed by the shift lever and a shift-lock control logic controlling the shift-lock device by stages for an initial time and a maintenance time after the initial time from when the stages may be changed such that the shift lever may be fixed, in order to shift-lock the shifted shift lever when the stages may be changed by the shift control logic.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2011-0131539 filed on December 9, 2011, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a transmission system for shift-by-wire (SBW), and in particular to a transmission system for shift-by-wire in which the shift lock of the shift lever is implemented by a solenoid. Background technique [0004] The transmission system for shift-by-wire is a transmission that performs shift control electronically by using a shift lever and an ECU, and is equipped with a shift lock device to prevent shifting due to misoperation. [0005] Prior art shift lock devices for shift-by-wire transmission systems must incorporate solenoids to implement a physical shift lock mechanism for the shift lever. [0006] However, in the prior art transmission system for shift-by-wire, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/34F16H59/02F16H61/02
CPCF16H61/22F16H2061/223Y10T74/2003Y10T74/20085Y10T74/20098Y10T74/20104Y10T74/2011B60K20/02F16H59/10F16H61/02F16H61/18
Inventor 李圣日朴汉吉李昌炫
Owner HYUNDAI MOTOR CO LTD
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