Cooling system

Abstract

A cooling system for an agricultural vehicle, such as a tractor driven by an internal combustion engine includes a main cooling system containing a coolant. The cooling system includes a sorption cooling system which includes an evaporator for evaporating a refrigerant, a sorption chamber for the sorption of the refrigerant vapor, a desorption chamber for the desorption of the refrigerant from the sorbent, and a condenser for condensing the refrigerant. An exhaust gas stream from the engine is conducted to the desorption chamber to provide the heat necessary for the desorption. The evaporator is used for additional cooling of the coolant of the main cooling system and/or for cooling a second exhaust gas stream from the engine.

1 . A cooling system for an engine driven agricultural vehicle having a main cooling arrangement with a main cooling medium, the cooling system comprising: 
 a sorption cooling system including an evaporator for evaporating a refrigerant, a sorption chamber containing an absorber for absorbing refrigerant vapor, a desorption chamber for desorption of the refrigerant from the absorber, and a condenser for condensing the refrigerant, the evaporator cooling the main cooling medium; and    an exhaust gas conduit communicating a first engine exhaust gas stream to the desorption chamber to provide heat required by the desorption chamber.    
   
   
       2 . The cooling system of  claim 1 , wherein: 
 the main cooling system comprises a charge air cooling system and the evaporator cools the charge air cooling system.    
   
   
       3 . The cooling system of  claim 1 , further comprising: 
 a second engine exhaust gas stream branched off from an exhaust gas stream which is communicated to the environment.    
   
   
       4 . The cooling system of  claim 1 , wherein: 
 the main cooling system comprises an engine cooling system, and the evaporator cools the engine cooling system.    
   
   
       5 . The cooling system of  claim 1 , wherein: 
 the main cooling system comprises an air conditioner cooling system which conditions a cab air stream, and the evaporator cooling the cab air stream.    
   
   
       6 . The cooling system of  claim 3 , wherein: 
 the evaporator cools the first engine exhaust gas stream.    
   
   
       7 . The cooling system of  claim 1 , wherein: 
 a cooler is connected to the condenser, the cooler removing heat from the condenser.    
   
   
       8 . The cooling system of the preceding claims, wherein: 
 a cooler is connected with the sorption chamber, the cooler removing heat from the sorption chamber.    
   
   
       9 . A cooling system for an engine driven agricultural vehicle having a main cooling arrangement with a main cooling medium, the cooling system comprising: 
 a sorption cooling system including an evaporator for evaporating a refrigerant, a sorption chamber containing an absorber for absorbing refrigerant vapor, a desorption chamber for desorption of the refrigerant from the absorber, and a condenser for condensing the refrigerant;    a first exhaust gas conduit communicating a first engine exhaust gas stream to the desorption chamber to provide heat required by the desorption chamber; and    a second exhaust gas conduit communicating a second engine exhaust gas stream from the engine, the evaporator cooling both the main cooling medium and the second exhaust gas stream.    
   
   
       10 . A cooling system for an engine driven agricultural vehicle having a main cooling arrangement with a main cooling medium, the cooling system comprising: 
 a sorption cooling system including an evaporator for evaporating a refrigerant, a sorption chamber containing an absorber for absorbing refrigerant vapor, a desorption chamber for desorption of the refrigerant from the absorber, and a condenser for condensing the refrigerant;    a first exhaust gas conduit communicating a first engine exhaust gas stream to the desorption chamber to provide heat required by the desorption chamber; and    a second exhaust gas conduit communicating a second engine exhaust gas stream from the engine, the evaporator cooling the second exhaust gas stream.