Method and arrangement for checking the operability of a tank-venting system

A method for checking the operability of a vessel, the method comprising the steps of:

• introducing a pressure into said vessel utilizing a pressure source having operating variables which vary during operational use thereof and which operating variables include current input to said pressure source, rpm of said pressure source and voltage applied to said pressure source;
• selecting at least one of said operating variables as a diagnostic variable;
• detecting said at least one operating variable while introducing said pressure into said vessel;
• and,
• drawing a conclusion as to a presence of a leak in said vessel from said operating variable.

A method for checking the operability of a vessel, the method comprising the steps of:

• introducing a pressure into said vessel utilizing a pressure source having operating variables which vary during operational use thereof;
• detecting said operating variables while introducing said pressure into said vessel;
• drawing a conclusion as to a presence of a leak in said vessel from said operating variables;
• providing a reference leak connected in parallel to said vessel;
• alternately charging said vessel and said reference leak with pressure;
• detecting said operating variables of said pressure source as said pressure is introduced into said vessel and into said reference leak;
• and,
• comparing the operating variables obtained with respect to said vessel to the operating variables obtained with respect to said reference leak and drawing a conclusion from the comparison as to the presence of a leak in said vessel.

An arrangement for checking the operability of a vessel, the arrangement comprising:

• a pressure source for charging said vessel with a pressure;
• said pressure source having operating variables which vary during operational use thereof;
• a circuit unit for detecting and evaluating said operating variables as said pressure is introduced into said vessel;
• a reference leak mounted parallel to said vessel;
• and,
• a switching device for alternately connecting said pressure source to said vessel and said reference leak.

An arrangement for checking the operability of a vessel, the arrangement comprising:

• a pressure source for charging said vessel with a pressure;
• said pressure source having operating variables which vary during operational use thereof;
• a circuit unit for detecting and evaluating said operating variables as said pressure is introduced into said vessel;
• said operating variables characterize the output volume flow of said pressure source;
• and,
• said operating variables including:
• current input to said pressure source, rpm of said pressure source and voltage applied to said pressure source.