In-vehicle odor source detection method

Abstract

The invention relates to the technical field of odor testing, and provides an in-vehicle odor source detection method. The method comprises the steps that a Tenax sampling tube is used for collectingan in-vehicle gas sample of a target vehicle, a first corresponding relation between a gas substance peak and retention time is obtained through a gas chromatograph-mass spectrometer for one part, anda second corresponding relation among odor intensity, odor types and retention time is determined through an olfactory discriminator for the other part; a first target gas substance in the in-vehiclegas sample is determined according to the first corresponding relationship and the second corresponding relationship; all the parts are put into a polyvinyl fluoride sampling bag, an experiment is carried out in an environment test cabin, a gas sample of each part is collected by using a Tenax sampling tube, and a second target gas substance of the gas sample of each part is determined; and the odor source part in the vehicle is determined according to the target gas substance of each part gas sample. According to the method, odor tracing of the target gas substance between the target vehicleand the internal parts can be achieved.

Description

technical field [0001] The invention belongs to the technical field of odor testing, in particular to a method for detecting odor sources in vehicles. Background technique [0002] The intuitive and obvious indicator of air quality in rail transit vehicles is the smell inside the car, and the size of the smell inside the car directly affects the passenger's evaluation of the comfort of the vehicle. The odor in the car mainly comes from the volatilization of volatile substances in interior materials and parts, and these volatile substances are usually harmful and will stimulate the sensory system of the human body, and when the concentration of volatile substances is high, it will make people feel sick , vomiting, etc., affecting human health and safety. [0003] At present, the rail transit industry has not released odor-related standards, but a series of international and domestic standards for odor testing have been released in other industries, such as VDA270, SAEJ1351, ...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method for detecting the smell source in the car to solve the problem that the smell in the car cannot be analyzed in the prior art, so the source of the smell in the car cannot be judged, resulting in the inability to detect the smell in the car from the source of the smell. control problem

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