Patent ID: 7614854
Filing Date: 2009-11-10
Classification: B60K,F02D,F02M

Abstract:
1. A multichamber tank for motor vehicles, comprises first and second chambers ( 4 , 5 ) connected together by a constricted region ( 6 ) located in an upper region of the chambers, the first chamber ( 4 ) has a filler neck ( 2 ) and a line ( 13 ) bridging the constriction forming the connection to the second chamber ( 5 ), a pump ( 11 ) designed for level equalization in the chambers is provided in the line ( 13 ), an electric motor ( 12 ) drives the pump, and a level sensor means ( 17 , 18 ) is provided in each of the two chambers ( 4 , 5 ) for generating output signals to a control unit ( 14 ) which controls the electric motor ( 12 ) of the pump ( 11 ) wherein a further sensor means ( 30 ; 30 ′; 30 ″) is provided on or at the outer end of the filler neck ( 2 ) for indicating a filling-up state to the control unit ( 14 ) which enables start-up of the pump ( 11 ).