Emission test and evaluation method for non-road mobile machinery

Abstract

The invention relates to an emission test and evaluation method for non-road mobile machinery. The method comprises the following steps: obtaining characteristic working conditions and time proportions of various non-road machines through clustering; designing an arrangement scheme of the measuring device according to the type, the structural characteristics and the exhaust characteristics of a non-road machine to be tested; designing an operation scheme of the non-road machine according to the characteristic working condition; measuring operating parameters, exhaust parameters and emission parameters of the non-road machine under different characteristic working conditions; calculating a gaseous substance emission factor and a particulate matter emission factor, and analyzing change characteristics of particle components; and carrying out feature evaluation on the non-road machine. Compared with the prior art, the multi-source isomerism of the non-road machine is considered, a measurement device arrangement scheme with high pertinence is designed according to the type, structural characteristics and exhaust characteristics of the non-road machine, and a more representative operation scheme is designed according to the exhaust characteristics of the non-road machine; and the emission test requirement and the actual application condition of non-road mobile machinery are met.

Description

technical field [0001] The invention relates to the field of non-road machinery emission testing, in particular to an emission testing and evaluation method of non-road mobile machinery. Background technique [0002] Non-road mobile machinery includes construction machinery, agricultural machinery, field machinery, ships, aircraft, railway locomotives, etc. Construction machinery includes excavators, loaders, bulldozers, and other subcategories; agricultural machinery includes tractors, harvesters, etc. There are three subcategories; field machinery includes subcategories such as forklifts and stackers; ships include subcategories such as inland ships, offshore vessels, and oceangoing vessels. Various non-road machinery are suitable for different scenarios, with complex and diverse structures, and typical multi-source structural features. [0003] my country's non-road machinery emission standards are relatively lagging behind, and the level of emission control is low. Com...

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Problems solved by technology

However, this patent is based on a statistical method to test the emissions of non-road mobile machinery. It only calculates the pollutant emissions based on the emission factors of non-road machinery in the database and the activity levels of non-road machinery obtained through statistics. The data is not accurate enough and does not take into account The characteristics of multi-source heterogeneity of non-road machinery, and the actual emission characteristics of multi-source heterogeneous non-road machinery are not considered

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