Method for controlling a pneumatic actuator
AssigneeZF Friedrichshafen AG
InventorsChristoph Rüchardt, Thomas Jäger
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Abstract
A method for controlling a pneumatic actuator (1) of a transmission having at least one sealing element (6, 7) that is arranged between two elements (2, 3) of the actuator (1) that move relative to one another, and within a specifiable operating temperature range in which a leakproofness of the actuator (1) is ensured. The pneumatic actuator is acted upon with compressed air from an air supply system for actuating a transmission component. When a temperature of the actuator (1) is below a glass transition temperature of the at least one sealing element (6, 7), the actuator (1) is acted upon with pre-heated compressed air from the air supply system to warm up the at least one sealing element (6, 7) above the glass transition temperature.
Claims12
A method for controlling a pneumatic actuator of a transmission having at least one sealing element arranged between two elements of the actuator that move relative to one another, and a leakproofness of the actuator, within a specifiable operating temperature range, is ensured by the at least one sealing element, and the actuator being acted upon by compressed air, from an air supply system, for actuating a transmission component, the method comprising:
- when a temperature of the actuator is below a glass transition temperature of the at least one sealing element, acting upon the actuator with compressed air from the air supply system.
A method for controlling a pneumatic actuator of a transmission having a pair of sealing elements arranged between two elements of the actuator that move relative to one another, a leakproofness of the actuator, within a specifiable operating temperature range, is ensured by the pair of sealing elements, and the actuator being acted upon by compressed air, from an air supply system, for actuating a transmission component, the method comprising:
- when a temperature of the actuator is below a glass transition temperature of the pair of sealing elements, acting upon the actuator with pre-heated compressed air, from the air supply system, to warm the pair of sealing elements to a temperature above the glass transition temperature.
A method for controlling a pneumatic actuator of a transmission having a first sealing element arranged between a piston and a cylinder, that move relative to one another, and a second sealing element arranged between the piston and a guide-tube, a leakproofness of the actuator is ensured, by the first and the second sealing elements, over a specifiable operating temperature range, and the actuator being acted upon, by compressed air from an air supply system, for actuating a transmission component, the method comprising:
- when a temperature of the actuator is below a glass transition temperature of at least one of the first and the second sealing elements, supplying compressed air from the air supply system to the actuator to raise a temperature of the first and the second sealing elements above the glass transition temperature of the first and the second sealing elements.
Dependencies are inferred from the claim text.