Method for preparing equivalent life-cycle ash degradation sample piece of gasoline particulate filter

Abstract

The invention provides a method for preparing an equivalent life-cycle ash degradation sample piece of a gasoline particulate filter (GPF). The method comprises the following steps: (1) determining anaverage engine oil consumption of a GPF supporting vehicle; (2) analyzing and determining compositions of boron, calcium, magnesium, phosphorus and zinc in an engine oil used by the GPF supporting vehicle, and the content of sulfate ash; (3) substituting data measured in the step (1) and the step (2) into a GPF life-cycle ash degradation amount prediction calculation formula to calculate a totalGPF life-cycle target ash accumulation amount; and (4) using a GPF rapid ash accumulation cycle on an engine pedestal to finally obtain the equivalent life-cycle ash degradation sample piece of the GPF. The method for preparing the equivalent life-cycle ash degradation sample piece of the GPF provided by the invention can calculate the accumulation amount of the GPF life-cycle degradation ash, rapidly accumulates ash by the engine pedestal, and finally prepares the equivalent real vehicle life-cycle ash degradation sample piece of the GPF.

Description

technical field [0001] The invention belongs to the technical field of gasoline vehicle exhaust post-treatment systems, and in particular relates to a method for preparing an equivalent full-life ash degradation sample of a gasoline vehicle particle filter. Background technique [0002] With the stricter requirements for the control of pollutants emitted by gasoline vehicles, the requirements for the number of particulate matter emissions from gasoline vehicles have been gradually increased globally, such as my country's GB18352.6-2016 "Light Vehicle Pollutant Emission Limits and Measurement Methods" standard and European standards Six-stage emission regulation "EC 715 / 2007". In order to meet the requirements of emission regulations on the number of particulate matter in gasoline vehicles, gasoline vehicle particulate filters (hereinafter referred to as GPF) are used by major vehicle manufacturers to control the emission of particulate matter pollutants. As a new vehicle pol...

AI Technical Summary

Problems solved by technology

The current exhaust after-treatment system for gasoline vehicles includes two parts, the three-way catalytic converter and the particulate filter. Among the various standard methods currently published, there is a clear life-span degradation prediction calculation and corresponding calculation for the three-way catalytic converter device. Bench rapid aging test method (SRC-SBC method), but there is no clear and effective full-life degradation prediction and rapid aging test method for GPF devices

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