Position actuator having pneumatic ventilation

A technology for actuators and ventilation devices, applied to components with teeth, transmission device control, fluid pressure actuation devices, etc., can solve complex and expensive problems

Active Publication Date: 2019-04-16
KONGSBERG AUTOMOTIVE AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the valve assembly is located external to the shift control device and is relatively complex and expensive, which is undesirable

Method used

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  • Position actuator having pneumatic ventilation
  • Position actuator having pneumatic ventilation
  • Position actuator having pneumatic ventilation

Examples

Experimental program
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Embodiment Construction

[0025] Such as Figure 1 to Figure 13 One embodiment of a position actuator 10 with pneumatic ventilation according to the present invention is shown for moving components of a vehicle powertrain (not shown), such as those located in an automatic transmission or an automated manual transmission, as disclosed in Pneumatic shift or position actuators for gears and clutches. exist figure 1 In the illustrated embodiment, a position actuator 10 is used to move a shift rail 11 to engage and disengage at least one gear in the transmission. It should be understood that the position actuator 10 may be used in other embodiments for vehicles other than powertrains. It should also be understood that the position actuator 10 may be a two-position actuator or a three-position actuator.

[0026] refer to Figure 2-13 , the position actuator 10 includes an axially extending cylinder housing 12 . The cylinder housing 12 is generally cylindrical with a generally circular cross-section. Th...

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Abstract

A position actuator includes a cylinder housing forming a fluid chamber having a first portion and a second portion, a movable main piston disposed in the cylinder housing between the first portion and the second portion, and a piston rod firmly attached to the main piston and extending through one end of the cylinder housing. The position actuator also includes a ventilation device disposed in the chamber and cooperating with the main piston to ventilate air between either one of the first portion and the second portion and one of the first portion and the second portion to atmosphere.

Description

technical field [0001] The present invention relates generally to position actuators for powertrains, and more particularly to position actuators with pneumatic ventilation for vehicle powertrains. Background technique [0002] BACKGROUND OF THE INVENTION It is known to provide a pneumatically actuated three-position actuator for actuating components in a powertrain, such as gears and clutches in a transmission. An example of such a three-position actuator is disclosed in US Patent Application Publication No. 2003 / 0136254 to Hirano et al. In this patent publication, a three-position actuator includes a housing, a movable inner piston disposed in a chamber within the housing, and a piston rod extending axially from the piston through one end of the housing . With this three-position actuator, a dividing wall divides the housing into two pressure chambers. Typically, air is used to regulate pressure during the stroke of the internal piston to move the shift rails to synchro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/12F16H61/30F15B15/14F15B15/20
CPCF16H61/30F15B11/123F15B15/149F15B15/204F15B2211/7055F15B2211/851F15B2211/853
Inventor B·维斯特加德K·T·约斯纳
Owner KONGSBERG AUTOMOTIVE AS
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