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Park inhibition solenoid assembly

A technology of components and components, applied in the field of parking prohibition solenoid components

Inactive Publication Date: 2013-01-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the typical park inhibit solenoid is useful for its intended purpose, the use of ETRS systems in applications with greater fluid pressure and forces, such as trucks and sport utility vehicles, requires enhanced protection against park mode failure. Ability to wish to engage

Method used

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  • Park inhibition solenoid assembly
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  • Park inhibition solenoid assembly

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Embodiment Construction

[0013] The following description is merely exemplary in nature and is not intended to limit the scope, application, or uses of the invention in any way.

[0014] Referring to FIG. 1 , a park inhibit solenoid assembly for a motor vehicle is indicated generally at 10 . The park inhibit solenoid assembly 10 is preferably used in an electronic range selection (ETRS) system in a transmission. An exemplary ETRS system for use with the present invention is disclosed in commonly assigned US Patent No. 6,983,668, which is hereby incorporated by reference as if fully disclosed herein. This design is an extension of the above invention to handle applications with new fluid pressures and forces. ETRS systems typically include multiple servos, solenoids, valves and positioning rods. An exemplary detent lever for the park inhibit solenoid assembly 10 is indicated generally at 12 . The components of the ETRS system, including detent lever 12 , cooperate to shift the transmission between o...

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Abstract

A Park inhibition solenoid assembly for preventing the undesirable shifting of a transmission from an out-of-Park mode to a Park mode includes a follower and an armature slidably disposed within a valve body / housing and within a solenoid. The follower is moveable between an out-of-Park position and a Park position and the armature is moveable between an unlocked position and a locked position. The follower and armature include detents for supporting a bearing. The armature and bearing prevent the follower from moving from the out-of-Park position to the Park position when the armature is held in place in the lock position by the solenoid.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 015,690, filed December 21, 2007. The disclosures of the aforementioned applications are incorporated herein by reference. technical field [0003] The present invention relates generally to a park inhibit solenoid assembly for a motor vehicle, and more particularly to a park inhibit solenoid assembly having a locking collar to prevent the motor vehicle from switching into a park mode. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0005] A typical multi-speed transmission uses a combination of torque-transmitting devices and gear sets to achieve multiple driving modes, including multiple out-of-park driving modes and a park mode. The non-parking driving modes generally include a forward gear or speed ratio (ie, drive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/18
CPCF16H61/22F16H2061/223F16H63/3475Y10T74/2011Y10T74/20104Y10T74/20085
Inventor M·A·维尔纳基亚S·W·鲍威尔
Owner GM GLOBAL TECH OPERATIONS LLC