Method for controlling blowing mode of automobile automatic air conditioner

Abstract

The invention relates to a method for controlling the blowing mode of an automobile automatic air conditioner. The method comprises the following steps of 1, calculating the blowing mode of the automobile automatic air conditioner; 2, judging whether the rotating speed Vspeed of an engine is greater than a preset rotating-speed threshold value Voffset or not; if so, then executing step 3; otherwise, executing step 7; 3, calculating a stroke enhancing value A according to the rotating speed Vspeed of the engine; 4, calculating the temperature difference delta T of currently detected outlet-air temperature and last-time detected outlet-air temperature; 5, judging whether the absolute value of the difference of the temperature difference delta T and the stroke enhancing value A is smaller than a preset temperature-difference threshold value delta t or not; if so, then executing step 6; otherwise, executing step 7; 6, adjusting the blowing mode according to the currently detected outlet-air temperature; 7, keeping the current blowing mode. Therefore, the inaccuracy of the outlet-air temperature detected by a temperature sensor due to the influences of other factors is avoided, and the blowing mode of the automobile automatic air conditioner is guaranteed, so that the environmental comfort level in an automobile is high.

Description

technical field [0001] The invention relates to the technical field of automobile air conditioners, in particular to a method for controlling the blowing mode of an automobile automatic air conditioner. Background technique [0002] With the development of the economy, automobiles have been widely popularized as a convenient, fast and economical means of transportation. With the improvement of people's living standards, people's requirements for automobiles are getting higher and higher. In addition to the very high requirements for the speed, appearance and entertainment functions of the car, people also have higher and higher requirements for the comfort of the car environment. Automobile air conditioning is an important factor affecting the comfort of the car environment. If the temperature inside the car is too high, the driver will easily feel sleepy and affect the concentration of driving, thus affecting the safety of driving to a certain extent; if the temperature in...

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Problems solved by technology

[0004] The outlet air temperature is mainly detected by the temperature sensor installed on the evaporator, but the measured value of the temperature sensor will be affected by other factors (such as poor contact, heat conduction error, internal and external circulation mode, etc.), resulting in the difference between the actual outlet air temperature and the temperature The measurement value of the sensor has a large deviation, which leads to the fact that the blowing mode of the automatic air conditioner of the car cannot meet the requirements of the comfort of the car environment, and the user experience is poor.

[0005] In addition, in the prior art, the air blowing mode of the automobile automatic air conditioner is continuously adjusted according to the target position of the mode damper; when the external environment (outside temperature of the vehicle, solar radiation, etc.) The wind temperature will also fluctuate more frequently, which will lead to frequent adjustment of the position of the mode damper, which will lead to frequent changes of the blowing mode, which will affect the comfort of the car environment

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