Improved preconditioning method for particulate filters

Abstract

The present disclosure generally relates to an improved method for performing a conditioning process on a particulate filter, preferably suitable for use in an aftertreatment system arranged downstream of an internal combustion engine. The proposed method provides for adjusting the filter under controlled conditions so that the filter can reach the desired operating state in a more efficient and faster manner. Furthermore, the proposed method also advantageously provides for maintaining a desired operating state, wherein the filtering capacity may be at a usable level.

Description

technical field [0001] The present disclosure relates to a method for performing a conditioning process on a particulate filter of an aftertreatment system. Background technique [0002] Particulate filters have been introduced as requirements for the emission of particulates in exhaust gas from vehicles and other combustion sources have increased. Particulate filters are designed to remove particulates (so-called soot) from exhaust gases before they are emitted into the environment. Particles are stored in the filter. [0003] Filters have different filtration capacities depending on the level of particulates stored in the filter. The new clean filter has relatively low filtration capacity due to the absence of particles in the filter. As the level of particulates in the filter increases, so does the filtration capacity. [0004] However, increasing particulate levels also increases back pressure across the filter, and too much back pressure causes the exhaust passage t...

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Problems solved by technology

However, like new filters, regenerated filters have an initial reduced filtration capacity

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