Device for supplying liquid reducing agent and motor vehicle having the device

A device for supplying liquid reducing agent for an exhaust gas treatment device, the device comprising:

• a tank having a tank bottom and an interior configured to store reducing agent;
• a separate chamber disposed in said tank bottom;
• a delivery device disposed in said separate chamber for delivering reducing agent;
• a line configured to lead from said delivery device to the exhaust gas treatment device, said line passing through said tank bottom at said separate chamber;
• an intake disposed in said interior;
• a cleaning layer covering said intake;
• said intake and said cleaning layer forming an intermediate space therebetween;
• and
• at least one sponge element disposed in said intermediate space, configured to absorb reducing agent and configured to provide reducing agent to be extracted by said delivery device through said intake.