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US 8,756,919 B2Granted
Device for providing liquid reducing agent, method for thawing frozen reducing agent and motor vehicle having the device
AssigneeEMITEC Gesellschaft fuer Emissionstechnologie mbH
InventorsJan Hodgson, Sven Schepers
Life of this patent
Estimating the term…
Abstract
A device for providing a liquid reducing agent includes a reducing agent tank for storing the liquid reducing agent. The reducing agent tank has at least one heater disposed in a movable manner in the reducing agent tank and constructed as an active heater. A method for thawing frozen reducing agent and a motor vehicle having the device are also provided.
Claims8
A device for providing a liquid reducing agent, the device comprising:
- a reducing agent tank for storing the liquid reducing agent;
- at least one active tank heater movably disposed in said reducing agent tank and including a supply line for supplying said at least one active tank heater with energy;
- an extraction point for reducing agent;
- and
- an active vent heater disposed on said supply line inside said reducing agent tank and configured to form a channel between said at least one active tank heater and said extraction point in frozen reducing agent inside said tank.
2 more elements
A method for thawing frozen reducing agent in a reducing agent tank, the method comprising the following steps:
- a) movably positioning at least one active tank heater in vicinity of a reducing agent surface and supplying the at least one active tank heater with energy using a supply line;
- b) activating the at least one active tank heater if the reducing agent is frozen at the reducing agent surface;
- c) thawing the reducing agent at the reducing agent surface and moving the at least one active tank heater;
- d) feeding the thawed reducing agent to an extraction point for the reducing agent;
- e) providing an active vent heater inside the reducing agent tank on the supply line;
- and
- f) forming a channel in the frozen reducing agent inside the tank between the at least one active tank heater and the extraction point using the active vent heater.
4 more elements
Dependencies are inferred from the claim text.