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Control method and control system for internal and external circulation of automobile air conditioner

A technology for automotive air conditioning and control methods, which is applied to vehicle components, air handling equipment, heating/cooling equipment, etc., can solve the problems of reduced air quality in the passenger compartment, affecting the car experience and physical health of passengers, and achieves improved air quality. Quality, avoid fogging, ensure the effect of safe reversing

Inactive Publication Date: 2021-08-10
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] According to market feedback, when the vehicle is reversing for a long time, if the car air conditioner is always in the external circulation mode, the exhaust gas from the engine will enter the passenger compartment through the external circulation air inlet of the car air conditioner, resulting in a decrease in the air quality in the passenger compartment and affecting the ride. Personnel's car experience and physical health

Method used

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  • Control method and control system for internal and external circulation of automobile air conditioner
  • Control method and control system for internal and external circulation of automobile air conditioner

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the control system of the internal and external cycle of the automobile air conditioner in this embodiment includes the air conditioner control unit 1 and the gear control unit 2, and the air conditioner control unit 1 and the gear control unit 2 are connected through the CAN bus. The gear control unit 2 can control the vehicle to move forward and backward, and send the vehicle gear signal (including the gear status and the gear duration, the gear status includes reverse gear, forward gear, neutral gear, etc., and the gear duration has the reverse gear duration Time, forward gear duration, neutral gear duration, etc.) are sent to the CAN bus. The air conditioner control unit 1 is an integrated controller capable of adjusting and controlling the automobile air conditioner, which can control the auto air conditioner, air volume additi...

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PUM

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Abstract

The invention discloses a control method and system for internal and external circulation of an automobile air conditioner, and the control method comprises the steps: judging whether a vehicle meets an internal circulation switching condition, if yes, controlling the automobile air conditioner to be switched to an internal circulation state, and otherwise, controlling the automobile air conditioner to maintain a current state; and if the vehicle gear is the reverse gear, the automobile air conditioner is in an external circulation state, the automobile air conditioner is in a front defrosting mode, the air volume is equal to 0, or the automobile air conditioner is in a non-front defrosting mode, and the reverse gear duration time is larger than or equal to the preset time threshold value t, it is indicated that the internal circulation switching condition is met. The air quality of the passenger compartment can be improved under the condition that safe reversing of the vehicle is guaranteed.

Description

technical field [0001] The invention belongs to the field of automobile air conditioner control, and in particular relates to a control method and a control system for the internal and external circulation of an automobile air conditioner. Background technique [0002] According to market feedback, when the vehicle is reversing for a long time, if the car air conditioner is always in the external circulation mode, the exhaust gas from the engine will enter the passenger compartment through the external circulation air inlet of the car air conditioner, resulting in a decrease in the air quality in the passenger compartment and affecting the ride. Personnel's car experience and physical health. Therefore, how to prevent automobile exhaust from entering the car during reversing has become an urgent problem to be solved. Contents of the invention [0003] The purpose of the present invention is to provide a control method and control system for the internal and external circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00
CPCB60H1/00642
Inventor 侯小波夏永丰
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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