Patent ID: 11918948
Assignee: CUMMINS FILTRATION IP, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 12:
13. The crankcase ventilation system of claim 12, wherein the filter media is selected such that, κ
      ·
      N
      ·
      h
      ·
      
        
          (
          
            
              D
              2
              2
            
            -
            
              2
              ⁢
              
                D
                1
              
              ⁢
              
                D
                2
              
              ⁢
              
                cos
                ⁡
                
                  (
                  
                    κ
                    N
                  
                  )
                
              
            
            +
            
              D
              1
              2
            
          
          )
        
        
          1
          2
        
      
      ·
      
        ω
        2
      
      ·
      
        (
        
          
            D
            3
            2
          
          -
          
            D
            0
            2
          
        
        )
      
    
    
      8
      ·
      Q
      ·
      v
      ·
      t
    
  
  >
  1, is satisfied, where:
ω is the rotational speed of the rotating coalescer in rad/s,
h is a media height of the filter media in m,
t is a thickness of the filter media that is normal to a flow direction through the filter media in m,
N is a number of pleats of the filter media,
D1 is an inner diameter of the filter media in m,
D2 is an outer diameter of the filter media in m,
D3 is an outer diameter of the filter element in m,
v is a kinematic viscosity of the blowby gases in m2/s,
Q is a flowrate of the blowby gases in m3/s, and
κ is a permeability of the filter media in m2.