IP Library › Granted Patent US 12,552,243
Granted Patent B2
US 12,552,243 · App. 18/190,793 · Granted Feb 17, 2026

Airflow control for heat exchanger in vehicles

Inventor: Brian R Reynolds (Dublin, OH)
Assignee: Honda Motor Co., Ltd.
B60K11/085B60K11/04
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Quick Facts
Patent No.
US 12,552,243
App. No.
18/190,793
Granted
Feb 17, 2026
Kind
B2
Abstract

A system is provided. The system includes a first flap coupled to a first portion of a duct associated with a heat exchanger of a vehicle. The first flap forms a first airflow path towards the heat exchanger. The system further includes a second flap coupled to a second portion of the duct associated with the heat exchanger of the vehicle. The second flap forms a second airflow path towards the heat exchanger. The first airflow path is different from the second airflow path.

Claims (60)

1 . A system, comprising:

a first flap coupled to a first portion of a duct associated with a heat exchanger of a vehicle, wherein the first flap is configured to form a first airflow path towards the heat exchanger; and

a second flap coupled to a second portion of the duct associated with the heat exchanger of the vehicle, wherein

the second flap is configured to form a second airflow path towards the heat exchanger,

the first airflow path is different from the second airflow path, and

a plane of the first airflow path is substantially perpendicular to a plane of the second airflow path.

2 . The system according to claim 1 , further comprising: a control system, wherein the control system is configured to:

control the first flap, via a first actuator, to selectively open the first portion of the duct to allow an airflow via the first airflow path; and

control the second flap, via a second actuator, to selectively open the second portion of the duct to allow the airflow via the second airflow path.

3 . The system according to claim 2 , wherein

the first actuator comprises one of: an electronic actuator, an electro-mechanical actuator, a pneumatic actuator, a magnetic actuator, or a hydraulic actuator, and

the first actuator is activated based on a mechanical operation on one of: the electronic actuator, the electro-mechanical actuator, the pneumatic actuator, the magnetic actuator, or the hydraulic actuator.

4 . The system according to claim 2 , wherein

the second actuator comprises a flow control valve,

the second actuator is activated based on one of: a pressure difference or a gravity difference, between a first region associated with a radiator of the heat exchanger and a second region associated with the second portion of the duct.

5 . The system according to claim 2 , wherein

the second actuator comprises one of: an electronic actuator, an electro-mechanical actuator, a pneumatic actuator, a magnetic actuator, or a hydraulic actuator, and

the second actuator is activated based on a mechanical operation on one of: the electronic actuator, the electro-mechanical actuator, the pneumatic actuator, the magnetic actuator, or the hydraulic actuator.

6 . The system according to claim 5 , wherein, in a failure event of the first flap and subsequent obstruction of the first airflow path,

the second actuator is activated based on the mechanical operation on one of: the electronic actuator, the electro-mechanical actuator, the pneumatic actuator, the magnetic actuator, or the hydraulic actuator, and

the second flap is configured to selectively control the airflow in the second airflow path, based on the activation of the second actuator.

7 . The system according to claim 5 , wherein, in at least one event of: a fast-charging event where a battery associated with the vehicle is charged, an uphill driving event where the vehicle is configured to drive in an inclined plane, or an air-cooling event where an air conditioner associated with the vehicle is configured to cool the vehicle,

the second actuator is activated based on the mechanical operation on one of: the electronic actuator, the electro-mechanical actuator, the pneumatic actuator, the magnetic actuator, or the hydraulic actuator, and

the second flap is configured to selectively control the airflow in the second airflow path, based on the activation of the second actuator.

8 . The system according to claim 1 , wherein the first portion of the duct is different from the second portion of the duct.

9 . The system according to claim 1 , further comprising a plurality of flaps disposed in the second portion of the duct, wherein,

a first set of the plurality of flaps are disposed on a first plane of the second portion; and

a second set of the plurality of flaps are disposed on a second plane of the second portion.

10 . The system according to claim 9 , wherein the first plane is located substantially perpendicular to the second plane.

11 . The system according to claim 9 , wherein

the first set of the plurality of flaps are selectively controlled to form a first air flow towards the heat exchanger, and

the second set of the plurality of flaps are selectively controlled to form a second air flow towards the heat exchanger, wherein,

the first air flow is substantially uniform compared to the second air flow.

12 . The system according to claim 1 , further comprising:

a first pivot element configured to movably pivot the first flap to releasably open the first portion of the duct and form the first airflow path towards the heat exchanger; and

a second pivot element configured to movably pivot the second flap to releasably open the second portion of the duct and form the second airflow path towards the heat exchanger.

13 . The system according to claim 12 , wherein

the first pivot element comprises one of: an edge hinge located at an edge of the first flap, a mid-hinge located at a mid-portion of the first flap, a living hinge integrally formed in the first flap, or a dual hinge disposed on opposing ends of the first flap; and

the second pivot element comprises one of: an edge hinge located at an edge of the second flap, a mid-hinge located at a mid-portion of the second flap, a living hinge integrally formed in the second flap, or a dual hinge disposed on opposing ends of the second flap.

14 . The system according to claim 1 , wherein

the first portion is a slot in the duct that is determined based on a layout of the vehicle, and

the first flap is coupled to the slot of the duct, based on the layout of the vehicle.

15 . The system according to claim 1 , wherein

the second portion is a slot in the duct that is determined based on a layout of the vehicle, and

the second flap is coupled to the slot of the duct, based on the layout of the vehicle.

16 . The system according to claim 1 , wherein, in a failure event of the first flap and subsequent obstruction of the first airflow path,

the second flap is activated based on one of: a pressure difference or a gravity difference, between a first region associated with a radiator of the heat exchanger and a second region associated with the second portion of the duct, to form the second airflow path.

17 . The system according to claim 1 , wherein, in at least one event of: a fast-charging event where a battery associated with the vehicle is charged, an uphill driving event where the vehicle is configured to drive in an inclined plane, or an air-cooling event where an air conditioner associated with the vehicle is configured to cool the vehicle,

the second flap is activated based on one of: a pressure difference or a gravity difference, between a first region associated with a radiator of the heat exchanger and a second region associated with the second portion of the duct, to form the second airflow path.

18 . A control system, comprising:

circuitry configured to:

control a first flap, coupled to a first portion of a duct associated with a heat exchanger of a vehicle, to releasably open the first flap and to form a first airflow path towards the heat exchanger; and

control a second flap, coupled to a second portion of the duct associated with the heat exchanger of the vehicle, to releasably open the second flap and to form a second airflow path towards the heat exchanger, wherein

the first airflow path is different from the second airflow path, and

a plane of the first airflow path is substantially perpendicular to a plane of the second airflow path.

19 . A method, comprising:

controlling a first flap, coupled to a first portion of a duct associated with a heat exchanger of a vehicle, to releasably open the first flap and to form a first airflow path towards the heat exchanger; and

controlling a second flap, coupled to a second portion of the duct associated with the heat exchanger of the vehicle, to releasably open the second flap and to form a second airflow path towards the heat exchanger, wherein

the first airflow path is different from the second airflow path, and

a plane of the first airflow path is substantially perpendicular to a plane of the second airflow path.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 28, 2023
From: REYNOLDS, BRIAN R
To: HONDA MOTOR CO., LTD.
Reel/Frame 063137/0215 →
Continuity (1)
Related Publication 20240326554A1 · Oct 3, 2024
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