Removing of blow-by gas out of crankcase without auxiliary drive

Abstract

The present disclosure refers to a blow-by gas removing device for an internal combustion engine having a crankcase. The blow-by removing device may comprise an engine component rotatably driven about a longitudinal axis. A fan wheel may be fixed to the engine component such that the fan wheel rotates together with the engine component. A housing may cover at least partially the fan wheel. The housing may be provided with an outlet configured to be connected to an oil separating device. The fan wheel and the housing may be configured in a manner that blow-by gas saturated with oil is being sucked off from the crankcase and discharged through the outlet. Further, the present disclosure refers to a method for removing blow-by gas of an internal combustion engine without an auxiliary drive for a fan.

1 . A blow-by gas removing device for an internal combustion engine having a crankcase, comprising:
 an engine component configured to be driven and to rotate about a longitudinal axis during the operation of the internal combustion engine;   a fan wheel fixed to the engine component such that the fan wheel rotates together with the engine component;   a housing covering at least partially the fan wheel, the housing being provided with an outlet configured to be connected to an oil separating device;   wherein the fan wheel and the housing are configured in a manner that blow-by gas is being sucked off the crankcase and discharged through the outlet.   
     
     
         2 . The blow-by gas removing device of  claim 1 , the fan wheel being integrally formed on the engine component. 
     
     
         3 . The blow-by gas removing device of  claim 1 , wherein the engine component comprises a rotatable shaft. 
     
     
         4 . The blow-by gas removing device of  claim 1 , wherein the engine component comprises a torsional vibration damper. 
     
     
         5 . The blow-by gas removing device of  claim 4 , wherein the torsional vibration damper is fixed to a crank shaft. 
     
     
         6 . The blow-by gas removing device of  claim 1 , the housing enclosing the fan wheel and the engine component at least partially. 
     
     
         7 . The blow-by gas removing device of  claim 6 , the housing enclosing in addition the oil separating device at least partially. 
     
     
         8 . The blow-by gas removing device of  claim 1 , further comprising the oil separating device and an inlet pipe of the internal combustion engine, the oil separating device being connected to the inlet pipe. 
     
     
         9 . The blow-by gas removing device of  claim 1 , further comprising the crankcase, the crankcase enclosing at least one of the group comprising the engine component, the fan wheel and the housing. 
     
     
         10 . The blow-by gas removing device of  claim 1 , further comprising a hatch cover of the internal combustion engine, the oil separating device being mounted on the hatch cover. 
     
     
         11 . A method for removing blow-by gas including oil of an internal combustion engine having a crankcase, the method comprising the steps of:
 rotating an engine component and a fan wheel fixed to the engine component together about a longitudinal axis;   sucking blow-by gas including oil off the crankcase by the aid of the fan wheel;   compressing the blow-by gas including oil by the aid of the fan wheel; and   discharging the compressed blow-by gas including oil to an oil separating device.   
     
     
         12 . The method of  claim 11 , further comprising the step of integrally forming a fan wheel on the engine component. 
     
     
         13 . The method of  claim 11 , further comprising the step of non-rotatably mounting a fan wheel on the engine component. 
     
     
         14 . The method of  claim 11 , the step of sucking blow-by gas including oil off the crankcase is performed at a radial inner side of the fan wheel. 
     
     
         15 . The method of  claim 11 , the step of discharging the blow-by gas including oil is performed at a radial outer side of the fan wheel. 
     
     
         16 . A method for removing blow-by gas including oil of an internal combustion engine having a crankcase, the method comprising the steps of:
 rotating an engine component and a fan wheel non-rotatably mounted on the engine component together about a longitudinal axis;   sucking blow-by gas including oil off the crankcase by the aid of the fan wheel;   compressing the blow-by gas including oil by the aid of the fan wheel; and   discharging the compressed blow-by gas including oil to an oil separating device.   
     
     
         17 . The method of  claim 16 , the step of sucking blow-by gas including oil off the crankcase is performed at a radial inner side of the fan wheel. 
     
     
         18 . The method of  claim 16 , the step of discharging the blow-by gas including oil is performed at a radial outer side of the fan wheel. 
     
     
         19 . The method of  claim 16 , wherein at least a portion of the engine component and the fan wheel are enclosed by a housing, the method further including the sucking of blow-by gas including oil off the crankcase through a gap between the housing and the engine component. 
     
     
         20 . The method of  claim 19 , wherein the gap is defined between an outer circumference of the engine component and an inner edge of the housing.