Heated vehicle shutter

Patent metadata

Field	Value
Publication number	US-9975421-B2
Application number	US-201615212931-A
Country	US
Kind code	B2
Filing date	Jul 18, 2016
Priority date	Jul 18, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A shutter assembly includes a shutter frame and at least one louver moveably mounted to the shutter frame. The shutter assembly also includes a mechanism configured to shift the at least one louver relative to the shutter frame to select a position for the shutter assembly between and inclusive of fully-opened and fully-closed. The shutter assembly additionally includes a heating element configured to generate thermal energy sufficient to melt ice formation on the shutter assembly and facilitate shifting of the at least one louver relative to the shutter frame. Furthermore, the shutter assembly includes a controller configured to regulate the mechanism and activate the heating element. A method of controlling operation of a shutter assembly and a vehicle having such a shutter assembly are also disclosed.

First claim

The invention claimed is:

1. A method of controlling operation of a shutter assembly configured to vary an amount of ambient airflow entering a vehicle, the method comprising:
receiving a signal, via a controller, indicative of intended operation of the shutter assembly, wherein the shutter assembly includes:
a shutter frame, at least one louver moveably mounted to the shutter frame, a mechanism configured to shift the at least one louver relative to the shutter frame to select a position for the shutter assembly between and inclusive of fully-opened and fully-closed, and a heating element configured to generate thermal energy sufficient to melt ice formation on the shutter assembly and facilitate shifting of the at least one louver relative to the shutter frame;

detecting an ambient temperature via a temperature sensor in communication with the controller;
detecting an ambient pressure via a barometric pressure sensor in communication with the controller;
detecting a level of ambient humidity via a moisture sensor in communication with the controller;
determining, via the controller, a dew point temperature using the detected ambient temperature, the detected ambient pressure, and the detected level of ambient humidity; and
activating, via the controller, the heating element when the determined dew point temperature is below a threshold dew point temperature; and
regulating, via the controller, the mechanism to shift the at least one louver relative to the shutter frame.

2. The method of claim 1 , further comprising activating the heating element, via the controller, for a predetermined amount of time.

3. The method of claim 1 , wherein the heating element is arranged on one of the at least one louver, the mechanism, and the shutter frame.

4. The method of claim 1 , wherein the shutter assembly additionally includes a force sensor in communication with the controller and configured to sense a force generated by the mechanism, the method further comprising:
determining if the force generated by the mechanism is above a predetermined magnitude of the force; and
activating the heating element when the detected force generated by the mechanism is above the predetermined magnitude of the force.

5. The method of claim 1 , wherein the shutter assembly additionally includes a position sensor in communication with the controller and configured to sense a position of the at least one louver, the method further comprising:
commanding the mechanism to shift the at least one louver to a predetermined position;
detecting, via the position sensor, the position of the at least one louver following the mechanism being commanded to shift the at least one louver to the predetermined position; and
activating the heating element when the detected position of the at least one louver is divergent from the predetermined position.

6. A shutter assembly comprising:
a shutter frame;
at least one louver mounted moveably to the shutter frame;
a mechanism configured to shift the at least one louver relative to the shutter frame to select a position for the shutter assembly between and inclusive of fully-opened and fully-closed;
a heating element configured to generate thermal energy sufficient to melt ice formation on the shutter assembly and facilitate shifting of the at least one louver relative to the shutter frame;
a controller configured to regulate the mechanism and activate the heating element;
a temperature sensor in communication with the controller and configured to sense an ambient temperature; and
a barometric pressure sensor configured to sense an ambient pressure and a moisture sensor configured to sense a level of ambient humidity, each of the barometric pressure sensor and the moisture sensor in communication with the controller, wherein the controller is additionally configured to:
detect, via the temperature sensor, the ambient temperature;
detect, via the barometric pressure sensor, the ambient pressure;
detect, via the moisture sensor, the level of ambient humidity;
determine a dew point temperature using the detected ambient temperature, ambient pressure, and level of ambient humidity; and
activate the heating element when the determined dew point temperature is below a threshold dew point temperature.

7. The shutter assembly of claim 1 , wherein the controller is configured to activate the heating element for a predetermined amount of time.

8. The shutter assembly of claim 1 , wherein the heating element is arranged on one of the at least one louver, the mechanism, and the shutter frame.

9. The shutter assembly of claim 1 , further comprising a force sensor in communication with the controller and configured to sense a force generated by the mechanism, wherein the controller is additionally configured to:
determine if the force generated by the mechanism is above a predetermined magnitude of the force; and
activate the heating element when the detected force generated by the mechanism is above the predetermined magnitude of the force.

10. The shutter assembly of claim 1 , further comprising a position sensor in communication with the controller and configured to sense a position of the at least one louver, wherein the controller is additionally configured to:
command the mechanism to shift the at least one louver to a predetermined position;
detect, via the position sensor, the position of the at least one louver following the mechanism being commanded to shift the at least one louver to the predetermined position; and
activate the heating element if the detected position of the at least one louver is divergent from the predetermined position.

11. A vehicle comprising:
a power-source configured to generate torque and propel the vehicle;
a grille opening arranged on the vehicle and configured to receive ambient airflow; and
a shutter assembly configured to selectively restrict and unrestrict the grille opening to vary an amount of the ambient airflow entering the vehicle to cool the power-source, the adjustable shutter assembly including:
a shutter frame;
at least one louver mounted moveably to the shutter frame;
a mechanism configured to shift the at least one louver relative to the shutter frame to select a position for the shutter assembly between and inclusive of fully-opened and fully-closed;
a heating element configured to generate thermal energy sufficient to melt ice formation on the shutter assembly and facilitate shifting of the at least one louver relative to the shutter frame; and
a controller configured to regulate the mechanism and activate the heating element.

12. The vehicle of claim 11 , further comprising a temperature sensor in communication with the controller and configured to sense an ambient temperature.

13. The vehicle of claim 12 , further comprising a barometric pressure sensor configured to sense an ambient pressure and a moisture sensor configured to sense a level of ambient humidity, each of the barometric pressure sensor and moisture sensor in communication with the controller, wherein the controller is additionally configured to:
detect, via the temperature sensor, the ambient temperature;
detect, via the barometric pressure sensor, the ambient pressure;
detect, via the moisture sensor, the level of ambient humidity;
determine a dew point temperature using the detected ambient temperature, ambient pressure, and level of ambient humidity; and
activate the heating element when the determined dew point temperature is below a threshold dew point temperature.

14. The vehicle of claim 11 , wherein the controller is configured to activate the heating element

Assignees

• Gm Global Tech Operations Llc

Inventors

• Froling Thomas H
• Schroeck David

Classifications

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• B60K11/085 Primary

  with adjustable shutters or blinds · CPC title

• Y02T10/88

  Optimized components or subsystems, e.g. lighting, actively controlled glasses · CPC title