Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Last revision Both sides next revision
techtalk:ref:engmech04a [2019/08/05 04:47]
hippysmack [Dissecting the Hayden KVP38 Crankcase Breather Valve]
techtalk:ref:engmech04a [2019/11/14 06:09]
hippysmack [Dissecting the Hayden KVP38 Crankcase Breather Valve]
Line 17: Line 17:
 Comments on this information is shown in bold below. ((Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=39)) \\ Comments on this information is shown in bold below. ((Hippysmack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=39)) \\
  
-{{:​techtalk:​ref:​engmech:​hayden_breather_valve_drawing1_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))+{{:​techtalk:​ref:​engmech:​1hayden_breather_valve_drawing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))
  
 //A crankcase breather valve for ventilation and pressure control within the crankcase of an internal combustion engine in which pistons stroke upwardly and downwardly in a synchronous movement. The valve is inserted into a breather hose which conducts gases into and out of the crankcase. The valve comprises a resilient valve member, preferably an elastomeric umbrella-type seal, spaced above a seal seat and forming a gap there between through which gases may flow either direction during portions of the pistons'​ stroke cycle. The valve construction permits three operating modes: firstly to permit the egress of positive pressure gas out of the crankcase and through the gap while the pistons stroke downwardly; secondly, to permit the ingress of a small amount of gas back through the gap into the crankcase when the crankcase pressure changes from positive to negative; and thirdly to check further ingress of gas into the crankcase at greater crankcase suctions, developed when the piston'​s are moving upwardly.// //A crankcase breather valve for ventilation and pressure control within the crankcase of an internal combustion engine in which pistons stroke upwardly and downwardly in a synchronous movement. The valve is inserted into a breather hose which conducts gases into and out of the crankcase. The valve comprises a resilient valve member, preferably an elastomeric umbrella-type seal, spaced above a seal seat and forming a gap there between through which gases may flow either direction during portions of the pistons'​ stroke cycle. The valve construction permits three operating modes: firstly to permit the egress of positive pressure gas out of the crankcase and through the gap while the pistons stroke downwardly; secondly, to permit the ingress of a small amount of gas back through the gap into the crankcase when the crankcase pressure changes from positive to negative; and thirdly to check further ingress of gas into the crankcase at greater crankcase suctions, developed when the piston'​s are moving upwardly.//