Coolant circuit for controlling the temperature of a cooling fluid and motor vehicle therewith

Abstract

The invention relates to a coolant circuit ( 5, 6, 7, 7 a, 8, 8 a ), preferably for cooling a drive or an engine ( 2 ) of a motor vehicle ( 1 ), in particular of a passenger car, comprising: a controller ( 8 ) which, in order to control the temperature of a cooling fluid ( 7 a ), activates an electrically operated fan motor ( 5 ). The controller ( 8 ) is in thermal contact with the cooling fluid ( 7 a ) in order to be cooled and is formed to detect the temperature of the cooling fluid ( 7 a ) by way of a temperature sensor ( 8 a ) which is preferably provided at the controller ( 8 ). A defined temperature of the cooling fluid ( 7 a ) can thereby be set without a control signal from a master control or regulating device being required for this purpose.

1 . Coolant circuit ( 5 ,  6 ,  7 ,  7   a ,  8 ,  8   a ), preferably for cooling a drive or an engine ( 2 ) of a motor vehicle ( 1 ), in particular of a passenger car, comprising: a controller ( 8 ) which, in order to control the temperature of a cooling fluid ( 7   a ), activates an electrically operated fan motor ( 5 ), characterised in that the controller ( 8 ) is in thermal contact with the cooling fluid ( 7   a ) in order to be cooled, and that the controller ( 8 ) is formed to detect the temperature of the cooling fluid ( 7   a ) by way of a temperature sensor ( 8   a ) which is preferably provided at the controller ( 8 ). 
     
     
         2 . Coolant circuit according to  claim 1 , in which the controller ( 8 ) is a linear controller. 
     
     
         3 . Coolant circuit according to  claim 1  or  2 , in which the controller ( 8 ) is in thermal contact with a coolant conduit ( 7 ) of the coolant circuit. 
     
     
         4 . Coolant circuit according to  claim 3 , in which the coolant conduit ( 7 ) has a recess ( 10 ) in which the controller ( 8 ) or a cooling block ( 11 ) associated with the controller ( 8 ) is partly set. 
     
     
         5 . Coolant circuit according to any one of the preceding Claims, in which the controller ( 8 ) is in thermal contact with a cooler ( 3 ) for cooling the cooling fluid ( 7   a ). 
     
     
         6 . Motor vehicle ( 1 ) with a coolant circuit ( 5 ,  6 ,  7 ,  7   a ,  8 ,  8   a ) according to any one of the preceding Claims for cooling its internal combustion engine ( 2 ). 
     
     
         7 . Coolant conduit ( 7 ) for a coolant circuit ( 5 ,  6 ,  7 ,  7   a ,  8 ,  8   a ) of a motor vehicle ( 1 ) which comprises a controller ( 8 ), in particular a linear controller, with a temperature sensor ( 8   a ) for determining the temperature of a cooling fluid ( 7   a ) flowing through the coolant conduit ( 3 ) during operation. 
     
     
         8 . Coolant conduit according to  claim 7  which comprises a recess ( 10 ) in which the controller ( 8 ) or a cooling block ( 11 ) associated with the controller ( 8 ) is partly set. 
     
     
         9 . Cooler ( 3 ) for a coolant circuit ( 5 ,  6 ,  7 ,  7   a ,  8 ,  8   a ) of a motor vehicle ( 1 ) which comprises a controller ( 8 ), in particular a linear controller, connected thereto in a detachable manner, with a temperature sensor ( 8   a ) for determining the temperature of a cooling fluid ( 7   a ) flowing through the cooler ( 3 ) during operation. 
     
     
         10 . CRFM module ( 6 ), comprising a fan motor ( 5 ) and a cooler ( 3 ) according to  claim 9 .