# US 2023/0055043 A1 · In-vehicle ventilation system

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- Number: US 2023/0055043 A1
- Document ID: US20230055043A1
- Status: Published application
- Kind: A1
- Application number: 17/870,949
- Filed: 2022-07-22
- Published: 2023-02-23
- Earliest claimed: 2021-08-19
- Assignees: Yazaki Corporation
- Applicants: Yazaki Corporation
- Inventors: Kazutaka KATAYAMA
- Web page: https://patentgrep.com/patent/US20230055043A1

## CPC

- B60H 1/008: {the input being air quality}
- B60H 1/00742: {by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors}
- B60H 1/00771: {the input being a vehicle position or surrounding, e.g. GPS-based position or tunnel}
- B60H 1/00849: {for selectively commanding the induction of outside or inside air (B60H1/00842 takes precedence)}
- B60H 1/24: Ventilating devices where the heating or cooling is irrelevant (nozzles or air-diffusers B60H1/34)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

An in-vehicle ventilation system includes a host ECU configured to acquire vehicle outside information using wireless communication, an air conditioner ECU configured to control an air conditioner installed in a vehicle compartment, a zone ECU configured to control a device in the vehicle compartment and to communicate with the host ECU and the air conditioner ECU and a power window unit configured to open and close a window of a vehicle. The zone ECU or the host ECU is configured to perform, based on information acquired inside the vehicle compartment and the vehicle outside information to be acquired by the host ECU, interlocked ventilation control interlockingly controls the power window unit and the air conditioner ECU.

## Claims

### Claim 1

An in-vehicle ventilation system comprising:
a host ECU configured to acquire vehicle outside information using wireless communication;
an air conditioner ECU configured to control an air conditioner installed in a vehicle compartment;
a zone ECU configured to control a device in the vehicle compartment H d to communicate with the host ECU and the air conditioner ECU; and
a power window unit configured to open and close a window of a vehicle,
wherein the zone ECU or the host ECU is configured to perform, based on information acquired inside the vehicle compartment and the vehicle outside information to be acquired by the host ECU, interlocked ventilation control interlockingly controls the power window unit and the air conditioner ECU.

### Claim 2 (depends on 1)

The in-vehicle ventilation system according to claim 1,
wherein the zone ECU or the host ECU is configured to switch among three types of ventilation modes, each defined by a state of an outside air introduction switching valve in the air conditioner and an opening/closing state of the window of the power window unit.

### Claim 3 (depends on 1)

The in-vehicle ventilation system according to claim 1,
wherein the zone ECU or the host ECU is configured to estimate an aerosol amount in the vehicle and to reflect the estimated aerosol amount to the ventilation mode switching control.

### Claim 4 (depends on 1)

The in-vehicle ventilation system according to claim 1,
wherein the zone ECU or the host ECU is configured to acquire information on a current location at which the vehicle is located, to acquire information indicative of an air quality of outside air corresponding to the current location, and to reflect the aerosol amount in the vehicle and the air quality of the outside air to the ventilation mode switching control.

### Claim 5 (depends on 3)

The in-vehicle ventilation system according to claim 3,
wherein the zone ECU or the host ECU is configured to manage an information indicative of the number of occupants in the vehicle compartment and a length of time over which the vehicle compartment has been closed, and to estimate the aerosol amount in the vehicle based on the information.