Device for returning oil separated from blow-by gases and accumulated in an accumulation chamber

Abstract

The invention relates to a device for returning oil separated from blow-by gases and accumulated in an accumulation chamber ( 5 ) into the crankcase ( 2 ) of an internal combustion engine with a pump ( 9 ), wherein the pump ( 9 ) is located on a component ( 8 ) of the internal combustion engine, which component periodically changes the distance to the pump ( 9 ), and that the pump ( 9 ) can be driven by magnetic forces acting between the component ( 8 ) and the pump ( 9 ).

1 . Device for returning oil separated from blow-by gases and accumulated in an accumulation chamber into the crankcase of an internal combustion engine with a pump, wherein the pump is located a small distance from a component of the internal combustion engine, which component periodically changes the distance to the pump, and that the pump is driven by magnetic forces acting between the component and the pump. 
   
   
       2 . Device according to  claim 1 , wherein either the pump or the component is magnet-equipped, and that the respective other part is designed to be magnetic. 
   
   
       3 . Device according to  claim 1 , further comprising a permanent magnet. 
   
   
       4 . Device according to  claim 3 , wherein the permanent magnet is selected from the group consisting of vulcanised, bonded or insert-moulded. 
   
   
       5 . Device according to  claim 1 , further comprising plastic material comprising magnetic particles. 
   
   
       6 . Device according to  claim 1 , further comprising an elastomer comprising magnetic particles. 
   
   
       7 . Device according to  claim 1 , wherein the pump is formed from an elastomer, and magnetic particles are located within the elastomer. 
   
   
       8 . Device according to  claim 1 , wherein the pump is formed from a plastic material, and magnetic particles are located within the plastic material. 
   
   
       9 . Device according to  claim 1 , wherein the component is formed from an elastomer, and magnetic particles are located within the elastomer. 
   
   
       10 . Device according to  claim 1 , wherein the component is formed from a plastic material, and magnetic particles are located within the plastic material. 
   
   
       11 . Device according to  claim 1 , wherein the pump comprises a diaphragm that can be induced to perform a stroke movement as a result of the changing distance of the component of the internal combustion engine. 
   
   
       12 . Device according to  claim 11 , wherein the diaphragm has a spring configuration and can automatically be moved back to the initial position after performing the stroke movement. 
   
   
       13 . Device according to  claim 11 , wherein the diaphragm comprises a circumferential bead. 
   
   
       14 . Device according to  claim 1 , wherein the pump is assigned to an intermediate chamber, the intermediate chamber being connected to the accumulation chamber via a first non-return valve permeable in the inlet direction, and to the crankcase via a second non-return valve permeable in the outlet direction. 
   
   
       15 . Device according to  claim 14 , wherein the pump, at a first distance to the component, generates low pressure in the intermediate chamber and thereby intakes oil from the accumulation chamber via the first non-return valve into the intermediate chamber, and, at a second distance, pumps the oil from the intermediate chamber into the crankcase via the second non-return valve, the second distance being greater than the first distance. 
   
   
       16 . Device according to  claim 1 , wherein the component is selected from a group consisting of a cam shaft, one of the gas exchange valves or a part of the lever mechanism acting upon the gas exchange valve. 
   
   
       17 . Device according to  claim 1 , wherein the pump can be driven by the component in a non-contact manner. 
   
   
       18 . Device for returning oil separated from blow-by gases and accumulated in an accumulation chamber into the crankcase of an internal combustion engine with a pump, wherein the pump is located a first distance from a component of the internal combustion engine, which component periodically changes the distance to the pump to a second distance, and that the pump is driven by magnetic forces acting between the component and the pump. 
   
   
       19 . Device according to  claim 18 , wherein the second distance is greater than the first distance. 
   
   
       20 . Device for returning oil separated from blow-by gases and accumulated in an accumulation chamber into the crankcase of an internal combustion engine with a pump, wherein the pump comprises a diaphragm and the pump is located a first distance from a component of the internal combustion engine, which component periodically changes the distance to the pump to a second distance, the device further comprising a permanent magnet positioned such that the pump is driven by magnetic forces acting between the component and the pump.