Page 542 - Cam Design Handbook
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THB16  9/19/03  8:04 PM  Page 530





                      Valve train  stresses  Valve train  natural frequecy  Permissable  cam/tappet stresses





                Valve lift (exhaust)  Valve train  weight  Minimum of  radius curvature









                     Spring material  Permissable  stresses  Spring loads  Total weight








                Valve lift (intake)  Spring surge  frequency  Spring  stiffness  Height of  base curve  Base circle radius










                Maximum speed              Acceleration pattern  Maximum negative  acceleration  Offset of  tappet  Valve lift Ramp height  Factors to be considered in automotive valve-gear design.










                Cam action periods                  Maximum velocity  Lobe Maximum  width nose radius  Diameter of tappet  FIGURE 16.1.
   537   538   539   540   541   542   543   544   545   546   547