A method for diagnosing the abnormal mode of air-conditioning pressure
A diagnostic method and pressure technology, applied in the direction of measuring fluid pressure, measuring devices, instruments, etc., can solve the problems that the air conditioner controller cannot remind consumers to check in time, affect the cooling effect of the air conditioning system, time-consuming and laborious, etc., to save energy , reduced time, avoid damage effect
Inactive Publication Date: 2011-12-21
ZHEJIANG ZILINK ELECTRONICS
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[0002] When the car is running, once the air conditioner runs abnormally, it will inevitably affect the cooling effect of the air conditioner system and increase energy consumption; at present, when the air conditioner fails, the air conditioner controller cannot remind consumers to check in time, and cannot provide reference for the corresponding failure The information is sent to the maintenance personnel, which requires the maintenance personnel to use a special pressure test instrument for detection, which is time-consuming and laborious
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[0011] The present invention will be described in detail below in conjunction with accompanying drawing: figure 1 Shown: Install two pressure sensors on the high-pressure end and low-pressure end of the air-conditioning pipeline respectively, and transmit the pressure value to the microprocessor of the air-conditioning controller through the wiring harness.
[0012] Store the normal pressure variation range of the air-conditioning system when the compressor is running and when it is not running in the microprocessor, and set the display symbols for normal and fault on the display screen of the air-conditioning controller. Once the air-conditioning controller is turned on, the controller should perform Self-test to avoid misoperation;
[0013] About one hour after the compressor stops running, the pressure at the high-pressure end and the low-pressure end should be basically the same; If it is lower than the normal pressure range, it means that the air conditioner is leaking; ...
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A method for diagnosing the abnormal mode of air-conditioning pressure. Two pressure sensors are respectively installed on the high-pressure end and low-pressure end of the air-conditioning pipeline, and the pressure value is transmitted to the microprocessor of the air-conditioning controller through the wire harness, and the compressor is running and The normal pressure range of the air-conditioning system is stored in the microprocessor when it is not running, and the display symbols for normal and fault conditions are set on the display screen of the air-conditioning controller. Once the air-conditioning controller is turned on, the controller should perform self-test to avoid errors Operation: After the compressor stops running for about an hour, the pressure at the high-pressure end and the low-pressure end should be basically the same; if there is a large pressure difference between the high-pressure end and the low-pressure end, it can be determined that the air-conditioning component is blocked; if the above situation occurs, the controller will send out an alarm signal; timely remind car owners to carry out air conditioner maintenance, improve the air quality in the car; reduce the time for fault maintenance; save energy; effectively avoid damage to the air conditioner compressor.
Description
technical field [0001] The invention relates to the field of automotive electronics, in particular to a diagnostic method for an automotive air conditioner. Background technique [0002] When the car is running, once the air conditioner runs abnormally, it will inevitably affect the cooling effect of the air conditioner system and increase energy consumption; at present, when the air conditioner fails, the air conditioner controller cannot remind consumers to check in time, and cannot provide reference for the corresponding failure To send the information to the maintenance personnel, the maintenance personnel need to use a special pressure testing instrument for detection, which is time-consuming and laborious. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned disadvantages, provide a diagnostic method for the abnormal mode of air-conditioning pressure, monitor the pressure change status of the air-conditioning syst...
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IPC IPC(8): G01L19/12
Inventor王国富
OwnerZHEJIANG ZILINK ELECTRONICS