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Transmission breather assembly

A ventilation device, transmission technology, applied in transmission parts, gear lubrication/cooling, belt/chain/gear, etc., can solve the problems of water entering the transmission, immersion in water, etc.

Inactive Publication Date: 2016-03-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this may appear to be a rare condition, the sudden drop in temperature can be caused by the transmission being submerged in water while the vehicle operator is attempting to drive on a flooded road or stream
At the same time, large quantities of water may contact or substantially surround the breather system inlet / outlet and be carried in by the air drawn in, causing water to enter the transmission

Method used

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  • Transmission breather assembly
  • Transmission breather assembly
  • Transmission breather assembly

Examples

Experimental program
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Embodiment Construction

[0053] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses.

[0054] see figure 1 , shows the front of a motor vehicle, such as a passenger car with the top removed, and is generally indicated by the reference numeral 10 . Passenger vehicle 10 generally includes front fenders 12 , a front fascia including headlights 14 , a grille 16 and a front bumper 18 . Within an engine compartment 20 delimited and defined by a firewall 22, a prime mover 24 is arranged, for example a petrol, hybrid, diesel or flex fuel engine. A transmission 26 is mechanically coupled to the prime mover 24 and driven by the output power of the prime mover 24 , the transmission 26 having an output that may drive a final drive assembly (not shown). The transmission breather assembly 30 is in fluid communication with the interior of the transmission 26 . The transmission breather assembly 30 may be secured to the firewall 22 or other conv...

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PUM

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Abstract

The present invention relates to a transmission breather assembly. Specifically, the transmission breather assembly includes a vertically disposed strut or strut having a toothed end and an annular shoulder axially spaced therefrom. The strut defines an internal passage that communicates with the interior of the transmission either directly or through flexible tubing. The strut can be secured to a surface such as a vehicle's firewall, or can be mounted directly to the transmission case where space and packaging requirements permit. A cap or cover is arranged on or over the toothed open end of the strut. The cap or cover comprises an inner cylindrical wall which fits over the toothed ends of the struts for retention thereon and creates an annular space adjacent the struts which functions as an air passage. The lower open end of the cap or cover is generally radially aligned with the annular shoulder on the strut. The cap or lid is made of hydrophobic material.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application Serial No. 61 / 295,526, filed January 15, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to apparatus for ventilating an automatic transmission, and more particularly to a transmission breather assembly that is specifically configured to minimize and eliminate the possibility of water being drawn into the transmission. 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] Transmissions, especially hydraulically controlled planetary automatic transmissions for motor vehicles, operate at temperatures well above ambient, typically 130°C (265°F) or higher. Because they can start operating at ambient temperatures as low as -35°C (-30°F) or lower, the ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04
CPCF16H57/027F16H2057/02043
Inventor K.C.特斯纳H.L.窝D.卡特尔
Owner GM GLOBAL TECH OPERATIONS LLC