Method for testing air volume distribution

Abstract

The invention relates to a method for testing air volume distribution. The method comprises the following steps: aiming at an air conditioning cabinet arranged on a whole vehicle to test the air volume distribution, by respectively arranging a first pressure sensor and a second pressure sensor on an air conditioning cabinet housing and in the whole vehicle passenger compartment and connecting the first pressure sensor and the pressure sensor to a pressure collection module of an air volume testing table; connecting the air volume collection module of the air volume testing table to the passenger compartment; then setting a running mode of an air conditioning system, the rotating speed gear and the scanning style of an air blower of the air conditioning cabinet on the whole vehicle; completely opening air inlets to measured or closing one by one, measuring a pressure value in the air conditioning cabinet and an air volume value in the passenger compartment when the detection value of the second pressure sensor is zero to obtain a relation curve between the pressure value and the air volume value; and processing data to obtain an air volume intermediary value, an air volume ratio and / or an air volume distribution actual value of each air inlet to be measured in the running mode and the rotating speed gear when the air inlets to measured are completely opened. The method is simple and stable in test result; and the testing blank of the whole vehicle air conditioning system is filled.

Description

【Technical field】 [0001] The invention relates to a performance test method of an automobile air-conditioning system, in particular to an air volume distribution test method for performing an air volume distribution test on an air-conditioning box installed on a vehicle. 【Background technique】 [0002] With the progress of the times and the development of science and technology, modern automobile technology is also changing with each passing day. It not only affects the maximum cooling capacity of the automobile air conditioning system (the total air volume of the air conditioning box is directly related to it), but also the comfort of the air conditioning system (that is, in various The uniformity of air volume distribution should be maintained in the operating mode) have put forward higher requirements. However, for the air volume test of the automobile air-conditioning system, there is a lack of corresponding effective test methods and means in the prior art. [0003] Fo...

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Problems solved by technology

However, for the air volume test of the automobile air-conditioning system, there is a lack of corresponding effective test methods and means in the prior art.

[0003] For example, a method for testing the air volume of an air-conditioning box is disclosed in the patent literature with the Chinese Patent Publication No. CN101995274A, which is a test method for the total air volume of the air-conditioning box. Air duct, arranging pressure test points on the rectified air duct, testing the blower pressure-air volume curve and other steps to predict the impact on the air volume of the air conditioning box when the evaporator or blower is adjusted separately, so as to calculate the new total air volume of the air conditioning box , this method does not involve the calculation of the air volume distribution ratio of the air outlet

In addition, another disadvantage of the above-mentioned method is that it is only applicable to the individual level (or system level) of the air-conditioning box, because there is a big difference between the test results of the individual level or the system level and the whole vehicle level (such as in It is reflected in many examples), so it cannot meet the test requirements of the whole vehicle level at all

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