Method for determining a buffer effect of an activated carbon filter

摘要

A method for determining a buffer effect of an activated carbon filter for a tank venting system of a fuel container for hydrocarbon-containing fuels involves feeding a defined quantity of hydrocarbon molecules to the activated carbon filter (320) via a tank connection (320_1) of the activated carbon filter (320) by a hydrocarbon feed system (310). A carrier gas flow is introduced into the activated carbon filter (320) via an air connection (320_2) of the activated carbon filter (320), and a defined volumetric flow is sucked out of the activated carbon filter (320) via an engine connection (320_3) of the activated carbon filter (320) by a hydrocarbon measuring device (340), and its content of hydrocarbon molecules is measured. The defined quantity of hydrocarbon molecules is made available by the hydrocarbon feed system (310) in the form of a thermodynamically isolated gas quantity.

主权项

1. A method for determining a buffer effect of an activated carbon filter for a tank venting system of a fuel container for hydrocarbon-containing fuels, the method comprising: providing at least one thermodynamically isolated container with a defined volume; connecting a hydrocarbon source to a pressure control valve that is coupled to the at least one thermodynamically isolated container with the defined volume; filling the at least one thermodynamically isolated container with hydrocarbon at a pressure that can be set and defined at the pressure control valve and at a defined temperature for feeding a defined quantity of hydrocarbon molecules to the at least one thermodynamically isolated container; establishing gas flow communication between the thermodynamically isolated container and the activated carbon filter via a tank connection of the activated carbon filter by means of a hydrocarbon feed system; introducing a defined carrier gas flow into the activated carbon filter via an air connection of the activated carbon filter by means of a carrier gas feed device, thereby delivering the defined quantity of hydrocarbon molecules from the thermodynamically isolated container to the activated carbon filter; sucking a defined volumetric flow out of the activated carbon filter to a hydrocarbon measuring device; and measuring a content of hydrocarbon molecules in the defined volumetric flow out of the activated carbon filter.