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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

Active Publication Date: 2021-06-18
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a vehicle emission testing method and device, to at least solve 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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  • Vehicle emission test method and device
  • Vehicle emission test method and device

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025]It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate c...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01M15/10
CPCG01M15/104G01M17/007
Inventor 杨新春
Owner BEIQI FOTON MOTOR CO LTD
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