Patent ID: 8586895

Claim:
A vehicle tank ( 1 , 21 , 41 , 51 , 62 ; 121 ) for a liquid reducing agent, for reducing nitrogen oxides in the exhaust gas of internal combustion engines, the vehicle tank comprising: a tank wall ( 2 , 43 , 129 ) made from plastic; a function unit ( 131 ) encompassed by the tank wall, the function unit including at least one pump ( 57 ), at least one pressure regulating valve ( 61 ), at least one inner tank ( 43 , 143 ) with electrical heating ( 32 , 65 , 81 , 83 , 91 , 93 , 113 ), and at least one intake line ( 63 ) from the inner tank to the pump, the inner tank ( 43 , 143 ) being disposed inside the vehicle tank such that the inner tank receives a partial volume of reducing agent and the inner tank subdivides the vehicle tank into a partial tank and a remainder of the tank, and the at least one intake line ( 63 ) is located in the partial tank; and a further intake line ( 55 ) located in the remainder of the tank, the at least one intake line ( 63 ) and the further intake line ( 55 ) leading to the at least one pump; wherein the pressure regulating valve ( 61 ) is disposed downstream of the at least one pump, the pressure regulating valve diverting excess reducing agent to the partial tank.