System and methods for reducing air pressure in a cabin of a vehicle to assist in door closure

Patent metadata

Field	Value
Publication number	US-11260722-B2
Application number	US-201916278490-A
Country	US
Kind code	B2
Filing date	Feb 18, 2019
Priority date	Feb 18, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

System, methods, and other embodiments described herein relate to assisting in closing a door of a vehicle by leveraging a Heating, Ventilation and Air-conditioning (HVAC) system in the vehicle. In one embodiment, a method includes detecting a position of at least one vehicle door, and when the position of the at least one vehicle door is an open position, determining whether to activate the HVAC system to reduce air pressure in a cabin of the vehicle. The method includes, in response to determining to activate the HVAC system, pumping air out of the cabin such that at least some of any increased air pressure caused by a vehicle door closure is removed from the cabin. The method includes, when the position of the at least one vehicle door has changed from the open position to a closed position, deactivating the HVAC system to stop pumping air out from the cabin.

First claim

What is claimed is:

1. A method for assisting in closing at least one vehicle door, the method comprising:
detecting a position of the at least one vehicle door;
determining whether to activate a Heating, Ventilation and Air-conditioning (HVAC) system to reduce air pressure in a cabin of the vehicle based on the position of the at least one vehicle door;
in response to determining to activate the HVAC system, pumping air out of the cabin using a blower such that at least some of any increased air pressure caused by closing the at least one vehicle door is removed from the cabin; and
determining whether to deactivate the HVAC system to stop pumping the air out from the cabin based on the position of the at least one vehicle door.

2. The method of claim 1 , further comprising:
determining an HVAC system rate of pumping the air out of the cabin; and
adjusting the HVAC system to pump the air out of the cabin according to the HVAC system rate.

3. The method of claim 2 , wherein determining the HVAC system rate of pumping the air out of the cabin, further comprises:
determining a size of a user closing the at least one vehicle door;
estimating a force from the user to close the at least one vehicle door based on the user's size; and
wherein the HVAC system rate of pumping the air out of the cabin is at least based on the estimated force.

4. The method of claim 2 , wherein determining the HVAC system rate of pumping the air out of the cabin, further comprises:
determining a location of the at least one vehicle door;
determining a location of the blower; and
wherein the blower fluidly connects the HVAC system and the cabin, wherein the HVAC system rate of pumping the air out of the cabin is at least based on the location of the at least one vehicle door and the location of the blower.

5. The method of claim 2 , wherein determining the HVAC system rate of pumping the air out of the cabin, further comprises:
identifying at least a weight of the vehicle door;
estimating a force required to close the at least one vehicle door based on the at least the weight of the vehicle door; and
wherein the HVAC system rate of pumping the air out of the cabin is at least based on the estimated force.

6. The method of claim 1 , wherein determining whether to activate the HVAC system to reduce the air pressure in the cabin of the vehicle further comprises:
detecting positions of any other vehicle doors, the other vehicle doors being different than the at least one vehicle door; and
based on the positions of the other vehicle doors, determining whether to activate the HVAC system to pump the air out of the cabin.

7. The method of claim 6 , wherein the other vehicle doors include a second vehicle door, further comprising:
detecting a position of the second vehicle door;
when the position of the second vehicle door is an open position and the second vehicle door is stationary, determining whether to activate the HVAC system to reduce the air pressure in the cabin; and
when the position of the second vehicle door is the open position and the second vehicle door is moving toward a closed position, determining to activate the HVAC system to reduce the air pressure in the cabin.

8. The method of claim 1 , further comprising:
detecting an air pressure level in the cabin; and
wherein the determination of whether to activate the HVAC system occurs when the position of the at least one vehicle door is the open position and an increase in the air pressure level is detected.

9. The method of claim 1 , further comprising:
deactivating the HVAC system to stop pumping the air out of the cabin after a predetermined period of time.

10. A cabin pressure-relief system for assisting in closing at least one vehicle door, comprising:
at least one sensor operable to detect a position of at least one vehicle door;
a Heating, Ventilation and Air-conditioning (HVAC) system;
one or more processors;
a memory communicably coupled to the one or more processors and storing:
an air pressure control module including instructions that when executed by the one or more processors cause the one or more processors to, when the position of the at least one vehicle door is in an open position, determine whether to activate the HVAC system to reduce air pressure in a cabin of the vehicle; wherein, in response to a determination to activate the HVAC system, the HVAC system pumps air out of the cabin such that at least some of any increased air pressure caused by closing the at least one vehicle door is removed from the cabin; and
an HVAC control module including instructions that when executed by the one or more processors cause the one or more processors to, when the position of the at least one vehicle door has changed from the open position to a closed position, deactivate the HVAC system to stop pumping the air out from the cabin.

11. The cabin pressure-relief system of claim 10 , wherein
the air pressure control module further includes instructions to determine an HVAC system rate of pumping the air out of the cabin; and
wherein the HVAC control module further includes instructions to adjust the HVAC system to pump the air out of the cabin according to the HVAC system rate.

12. The cabin pressure-relief system of claim 11 , wherein the instructions to determine the HVAC system rate of pumping the air out of the cabin further include instructions to:
determine a size of a user closing the at least one vehicle door;
estimate a force from the user to close the at least one vehicle door based on the user's size; and
wherein the HVAC system rate of pumping the air out of the cabin is at least based on the estimated force.

13. The cabin pressure-relief system of claim 11 , further comprising:
a blower fluidly connected to the HVAC system and the cabin;
wherein the instructions to determine the HVAC system rate of pumping the air out of the cabin further include instructions to:
determine a location of the at least one vehicle door; and
determine a location of the blower; and

wherein the HVAC system rate of pumping the air out of the cabin is at least based on the location of the at least one vehicle door and the location of the blower.

14. The cabin pressure-relief system of claim 11 , wherein the instructions to determine the HVAC system rate of pumping the air out of the cabin further include instructions to:
identify at least a weight of the vehicle door;
estimate a force for closing the at least one vehicle door based on at least the weight of the vehicle door; and
wherein the HVAC system rate of pumping the air out of the cabin is at least based on the estimated force.

15. The cabin pressure-relief system of claim 10 , further comprising:
at least one sensor operable to detect positions of any other vehicle doors, the other vehicle doors being different than the at least one vehicle door; and
wherein the air pressure control module further includes instructions to:
based on the positions of the other vehicle doors, determine whether to activate the HVAC system to pump the air out of the cabin.

16. The cabin pressure-relief system of claim 15 , wherein the other vehicle doors include a second vehicle door, further comprising
the at least one sensor operable to detect a position of the second vehicle door;
wherein the air pressure control module further includes instructions to:
when the position of the second vehicle door is an open position and the second vehicle door is stationary, determining whether to activate the HVAC system to reduce the air pressure in the cabin; and
when

Assignees

• Toyota Eng & Mfg North America

Inventors

• Williams Paxton S
• Frederick Scott Louis
• Robison Scott P

Classifications

• B60H1/00849

  for selectively commanding the induction of outside or inside air (B60H1/00842 takes precedence) · CPC title

• B60H1/0065

  Control members, e.g. levers or knobs (B60H1/00985 takes precedence) · CPC title

• B60H1/00735

  Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models · CPC title

• B60H1/248

  Air-extractors, air-evacuation from the vehicle interior · CPC title

• B60H1/00828 Primary

  Ventilators, e.g. speed control (B60H1/00864 takes precedence) · CPC title