System and method for controlling air conditioning and ISG systems for vehicle

Patent metadata

Field	Value
Publication number	US-11472259-B2
Application number	US-201715831743-A
Country	US
Kind code	B2
Filing date	Dec 5, 2017
Priority date	Sep 14, 2017
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A system and method for controlling air conditioning and ISG systems for a vehicle are provided. The system includes a heater controller that detects a defrost mode selection signal or an A/C blower operation signal and transmits the signal to a cluster controller. The cluster controller then transmits the defrost mode selection signal or the A/C blower operation signal to an engine ECU. The engine ECU determines ISG entry prevention or ISG release after ISG entry in response to receiving the defrost mode selection signal or the A/C blower operation signal from the cluster controller.

First claim

What is claimed is:

1. A system for controlling air conditioning and idle stop and go (ISG) systems for a vehicle, comprising:
a heater controller configured to detect a defrost mode selection signal or an air conditioner (A/C) blower operation signal, and transmit the defrost mode selection signal or the A/C blower operation signal to a cluster controller, the cluster controller being connected to the heater controller by a direct connection in a pin-to-pin manner;
the cluster controller configured to receive the defrost mode selection signal or the A/C blower operation signal from the heater controller via the direct connection; and
an engine electronic control unit (ECU) configured to receive the defrost mode selection signal or the A/C blower operation signal from the cluster controller via CAN communication, the engine ECU being communicably connected to the cluster controller through a controller area network (CAN) communication line and being connected to the heater controller in the pin-to-pin manner for signal transmission therebetween, and the engine ECU being configured to determine ISG entry prevention or ISG release after ISG entry.

2. The system of claim 1 , wherein the heater controller further comprises a switch module configured to detect the defrost mode selection signal or the A/C blower operation signal.

3. The system of claim 2 , wherein the switch module comprises:
a switch operation panel coaxially connected to an air discharge mode selection lever or an air volume control lever, and having a pressure terminal formed integrally therewith, the pressure terminal protruding from one side of the switch operation panel;
a switch body having a push pin formed at one side thereof, and mounted at a position adjacent to the switch operation panel, the push pin configured to generate a switch ON signal when pressed; and
a leaf spring that contacts the push pin, mounted to the switch body, and pressed by the pressure terminal when the switch operation panel rotates.

4. The system of claim 1 , wherein the engine ECU is configured to operate an engine to be maintained according to an ISG entry prevention logic in response to receiving the defrost mode selection signal before the ISG entry, and restart the engine according to an ISG release logic in response to receiving the defrost mode selection signal after the ISG entry.

5. The system of claim 1 , wherein the engine ECU is configured to operate an engine to be maintained according to an ISG entry prevention logic in response to receiving the A/C blower operation signal to determine that an A/C blower is operated at a maximum stage number before the ISG entry, and is configured to restart the engine according to an ISG release logic in response to receiving the A/C blower operation signal to determine that the A/C blower is operated at the maximum stage number after the ISG entry.

6. A method of controlling air conditioning and idle stop and go (ISG) systems for a vehicle, comprising:
receiving, by an engine electronic control unit (ECU), a defrost mode selection signal or an air conditioner (A/C) blower operation signal, received from a cluster controller via a heater controller, the cluster controller being connected to the heater controller by a direct connection in a pin-to-pin manner; and
determining, by the engine ECU, ISG entry prevention or ISG release after ISG entry, the engine ECU being communicably connected to the cluster controller through a controller area network (CAN) communication line and being connected to the heater controller in the pin-to-pin manner for signal translation there-between.

7. The method of claim 6 , wherein the engine ECU is configured to operate an engine to be maintained according to an ISG entry prevention logic in response to receiving the defrost mode selection signal before the ISG entry and restart the engine an ISG release logic in response to receiving the defrost mode selection signal after the ISG entry.

8. The method of claim 6 , wherein the engine ECU is configured to operate an engine to be maintained according to an ISG entry prevention logic in response to receiving the A/C blower operation signal to determine that an A/C blower is operated at a maximum stage number before the ISG entry and restart the engine according to an ISG release logic in response to receiving the A/C blower operation signal to determine that the A/C blower is operated at the maximum stage number after the ISG entry.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Park Ji Min
• Hur Sang Ku

Classifications

• B60H1/00785

  by the detection of humidity or frost · CPC title

• B60H2001/3241

  of air · CPC title

• Y02T10/40

  Engine management systems · CPC title

• B60H1/322 Primary

  for improving the stop or idling operation of the engine · CPC title

• B60H1/00778 Primary

  the input being a stationary vehicle position, e.g. parking or stopping · CPC title