Vehicle emission test method and device

A technology for emission testing and vehicles, which is applied in the field of vehicle emission testing methods and devices, can solve the problems of long test period and high test cost, achieve high test efficiency, simple structure, and solve the effect of high test cost
CN110608893BActive Publication Date: 2021-06-18BEIQI FOTON MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIQI FOTON MOTOR CO LTD
Publication Date
2021-06-18

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Abstract

The invention discloses a vehicle emission testing method and device. Wherein, the method includes: obtaining nitrogen and oxygen measurement results collected by a nitrogen and oxygen sensor; according to the nitrogen and oxygen measurement results and the difference between the nitrogen and oxygen measurement of the vehicle-mounted emission test system and the nitrogen-oxygen sensor obtained in advance, the vehicle-mounted emission test system is used for the entire vehicle to carry out the test. The measured measurement results are estimated to obtain a measurement estimate. The invention solves the technical problems of high test cost and long test period caused by the use of special emission test equipment in the related art.
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Description

technical field

[0001] The invention relates to the field of vehicle emission testing, in particular to a vehicle emission testing method and device. Background technique

[0002] In related technologies, the emission requirements for heavy-duty diesel engines are becoming increasingly stringent. At present, it is far from enough to only meet the emission requirements of diesel engine benches. In the existing regulations, it is clearly necessary to add vehicle emission requirements. The emission test of the Portable Emission Measurement System (PEMS) is a method of measuring pollutants emitted by vehicles by using PEMS. Generally speaking, the PEMS emission test of the whole vehicle is basically arranged after the original calibration of the engine bench and the calibration of the engine aftertreatment. Among them, the engine aftertreatment includes SCR (Selective Catalytic Reduction, selective catalytic reduction device) and DPF (Diesel Particulate Filter , diesel particul...

Claims

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