Lubricant supply mechanism for an internal combustion engine

Abstract

In a lubricant supply mechanism for an internal combustion engine with an oil receiving case arranged under a crankcase, two chambers are constructed for exhausted oil. A first oil pump suctions lubricant from a first chamber and supplies the lubricant to a consumer, such as, for example, a crankshaft bearing or cam shaft bearing of the internal combustion engine. A second oil pump suctions the lubricant off from a second chamber and supplies the lubricant to the first chamber by way of an oil cooler for cooling the lubricant. The oil cooler defines part of a circuit providing for oil circulation produced by the second oil pump.

1 . A lubricant supply mechanism for an internal combustion engine comprising: 
 an oil receiving pan arranged under a crankcase and constructed with first and second chambers designed for receiving exhausted oil,    a first oil pump by which the oil is suctioned from the first chamber and provided to a consumer of the internal combustion engine,    a second oil pump by which the oil is suctioned from the second chamber and provided to the first chamber, and    an oil cooler for cooling the oil,    wherein the oil cooler is integrated in an oil circuit provided by the second oil pump.    
     
     
         2 . The lubricant supply mechanism according to  claim 1 , wherein the oil cooler is arranged on a pressure side of the second oil pump.  
     
     
         3 . The lubricant supply mechanism according to  claim 1 , wherein the oil cooler is an oil/water heat exchanger having a slab design.  
     
     
         4 . The lubricant supply mechanism according to  claim 1 , wherein the first and second oil pumps are combined into a double pump with two pump stages.  
     
     
         5 . The lubricant supply mechanism according to  claim 1 , and further comprising at least one oil exhaust pump adapted to supply oil to a turbocharger or a supercharger from the first chamber, wherein the oil is returned from the turbocharger or the supercharger to the oil cooler by the at least one oil exhaust pump.  
     
     
         6 . The lubricant supply mechanism according to  claim 1 , wherein the consumer is a crankshaft bearing or a cam shaft bearing.  
     
     
         7 . The lubricant supply mechanism according to  claim 2 , wherein the oil cooler is an oil/water heat exchanger having a slab design.  
     
     
         8 . The lubricant supply mechanism according to  claim 2 , wherein the first and second oil pumps are combined into a double pump with two pump stages.  
     
     
         9 . The lubricant supply mechanism according to  claim 3 , wherein the first and second oil pumps are combined into a double pump with two pump stages.  
     
     
         10 . The lubricant supply mechanism according to  claim 2 , and further comprising at least one oil exhaust pump adapted to supply oil to a turbocharger or a supercharger from the first chamber, wherein the oil is returned from the turbocharger or the supercharger to the oil cooler by the at least one oil exhaust pump.  
     
     
         11 . The lubricant supply mechanism according to  claim 3 , and further comprising at least one oil exhaust pump adapted to supply oil to a turbocharger or a supercharger from the first chamber, wherein the oil is returned from the turbocharger or the supercharger to the oil cooler by the at least one oil exhaust pump.  
     
     
         12 . The lubricant supply mechanism according to  claim 4 , and further comprising at least one oil exhaust pump adapted to supply oil to a turbocharger or a supercharger from the first chamber, wherein the oil is returned from the turbocharger or the supercharger to the oil cooler by the at least one oil exhaust pump.  
     
     
         13 . The lubricant supply mechanism according to  claim 6 , and further comprising at least one oil exhaust pump adapted to supply oil to a turbocharger or a supercharger from the first chamber, wherein the oil is returned from the turbocharger or the supercharger to the oil cooler by the at least one oil exhaust pump.