Vehicle Exhaust Emission Monitoring Device

A technology for automobile exhaust and monitoring devices, applied in sampling devices, color/spectral characteristic measurement, etc., can solve the problem of not considering external air pollution, etc., and achieve the effect of facilitating compliance testing and saving power
CN104535517BActive Publication Date: 2017-04-19NINGBO INTELLIGENT MFG IND RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO INTELLIGENT MFG IND RES INST
Publication Date
2017-04-19

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Abstract

The invention aims to lower the interference of surrounding environment and cars on the monitoring for automobile exhaust gas emission, and provides a monitoring device for the automobile exhaust gas emission. The monitoring device for the automobile exhaust gas emission comprises a monitoring terminal and a detecting terminal. The monitoring terminal comprises a processing unit. The detecting terminal comprises a controlling unit, a power supplying unit and a communication unit, wherein the power supplying unit and the communication unit are connected with the controlling unit. The detecting terminal further comprises an exhaust gas collecting unit and an exhaust gas analyzing unit. The exhaust gas collecting unit comprises a gas homogenizing unit, multiple air blowing units and multiple air receiving units. The multiple air receiving units correspond to the multiple air blowing units in a one-to-one mode, and a certain distance is kept between the corresponding air blowing units and the air receiving units. According to the monitoring device, the structure of the multiple air blowing units and the multiple air receiving units is utilized, the volume of the automobile exhaust gas entering the detecting device is increased. By using the pressure difference generated by a vacuum pump, the gas concentration entering all gas detecting sensors remains unchanged. The monitoring device reduces the unsolved problem that the concentration of the exhaust gas entering the detecting device is thinned during the exhaust gas detecting process.
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Description

technical field

[0001] The invention relates to the technical field of automobile electronics, in particular to an automobile exhaust emission monitoring device. Background technique

[0002] Research on motor vehicle exhaust pollution began in the middle of the last century in European and American countries, and in my country in the 1980s. In terms of tail gas pollution monitoring, many scholars at home and abroad have done a lot of work, not only using modern physical and chemical analysis methods to develop a large number of tail gas pollution monitoring instruments, replacing the conventional plastic bag collection method, but also establishing a system based on the characteristics of tail gas pollution. Many mathematical prediction models, combined with GIS (Geographic Information System, Geographic Information System) and RS (remote monitoring technology, remote sensing) means, have carried out empirical research in most cities.

[0003] OBD-II (On-Board Diagnostics)...

Claims

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