Automotive actual road particulate emission characteristic measuring device
A technology of actual road and emission characteristics, applied in the direction of measuring devices, measuring heat, using electrical devices, etc., can solve problems such as inappropriateness, limited coverage of measuring working conditions, etc., and achieve the effect of fewer components, easy popularization, and simple structure
Inactive Publication Date: 2011-03-30
余博文
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Problems solved by technology
[0005] (2) For heavy-duty vehicles, this test method only measures the emission of the engine at thirteen working condition points, and the test coverage of the measurement condition is very limited
For this kind of vehicle, it is not appropriate to evaluate it based on the engine only from the structural point of view.
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[0014] like figure 1 As shown, a device for measuring the emission characteristics of particulate matter on the actual road of an automobile includes a gas flow meter, a sampling diluter, a particle concentration tester, and a data recording and processing device. The gas flow meter includes a differential pressure sensor 1 and an absolute pressure sensor 3 And the temperature sensor 2, the output end of the gas flowmeter is connected with the input end of the sampling diluter, the output end of the sampling diluter is connected with the input end of the particle concentration tester, and the output end of the particle concentration tester is connected with the data recording and processing system ; The differential pressure sensor 1, the absolute pressure sensor 3 and the temperature sensor 2 in the gas flow meter are respectively connected with the data recording and processing system.
[0015] During use, the input end of the gas flowmeter of the present invention is connec...
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The invention discloses an automotive actual road particulate emission characteristic measuring device, belongs to the field of exhaust measurement, and relates to structural improvement of an automobile exhaust characteristic measuring device, in particular to a measuring device capable of measuring automotive actual road particulate emission characteristics. The invention provides a measuring device capable of measuring the automotive actual road particulate emission characteristics, The device comprises a gas flow meter, a sampling diluter, a particulate concentration tester and a data recording and processing device. The gas flow meter comprises a pressure difference transducer, an absolute pressure transducer and a temperature sensor; an output end of the gas flow meter is connected with an input end of the sampling diluter; an output end of the sampling diluter is connected with an input end of the particulate concentration tester; an output end of the particulate concentration tester is connected with the data recording and processing device; and the pressure difference transducer, the absolute pressure transducer and the temperature sensor in the gas flow meter are respectively connected with the data recording and processing device.
Description
Technical field: [0001] The invention belongs to the field of exhaust gas measurement, and relates to the improvement of the structure of an automobile exhaust characteristic measuring device, in particular to a measuring device capable of measuring the actual road particle emission characteristics of automobiles. Background technique: [0002] Existing measuring devices for the characteristics of automobile exhaust only measure the gaseous pollutants in automobile exhaust. Although the measurement technology is quite mature, the measurement technology for the emission characteristics of particulate matter in automobile exhaust is still in the research stage. There is no feasible and mature technical means. The measurement of particulate matter must not only be consistent with the filter paper weighing method of emission regulations, and realize real-time measurement, but also solve the problem of variability in the composition and quality of particulate matter. [0003] In...
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IPC IPC(8): G01F1/34G01N15/06G01K7/02
Inventor 余博文
Owner 余博文