Fuel pressure regulator
AssigneeOutboard Marine Corporation
InventorGerhard A. Maier
Life of this patent
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Abstract
A fuel pressure regulator comprising a housing, a movable diaphragm mounted within the housing, the diaphragm including a first side communicating with the atmosphere and an opposite second side having first and second portions, a fuel chamber partially defined by the first portion of the second side of the diaphragm, a constant pressure chamber partially defined by the second portion of the second side of the diaphragm, a fuel inlet communicating with the fuel chamber, and a fuel outlet having an inlet end located adjacent the diaphragm within the fuel chamber and being selectively communicable with the fuel chamber in response to movement of the diaphragm relative to the inlet end.
Claims20
A fuel pressure regulator comprising a housing, a movable diaphragm mounted within said housing, said diaphragm including a first side communicating with the atmosphere and an opposite second side having first and second portions, a fuel chamber partially defined by said first portion of said second side of said diaphragm, a constant pressure chamber closed to the atmosphere partially defined by said second portion of said second side of said diaphragm, fuel inlet means communicating with said fuel chamber, and fuel outlet means including an outlet conduit having an inlet end located adjacent said diaphragm within said fuel chamber and being selectively communicable with said fuel chamber in response to movement of said diaphragm relative to said inlet end.
A fuel pressure regulator comprising a housing, a movable diaphragm including first and second portions and being mounted within said housing so as to divide said housing into first and second chambers, said first chamber communicating with the atmosphere, a flexible bellows extending between said housing and said diaphragm in said second chamber and dividing said second chamber into a fuel chamber within said bellows and a constant pressure chamber closed to the atmosphere and located outside said bellows, said fuel chamber being partially defined by said first portion of said diaphragm, and said constant pressure chamber being partially defined by said second portion of said diaphragm, fuel inlet means communicating with said fuel chamber, fuel outlet means including an outlet conduit having an inlet end located adjacent said diaphragm within said fuel chamber, interengageable valve means on said inlet end of said outlet conduit and on said diaphragm for closing said outlet conduit when said diaphragm is biased toward said outlet conduit, and for opening said outlet conduit to said fuel chamber when said diaphragm is biased away from said outlet conduit, and means for varying the pressure of fuel in said fuel chamber independently of atmospheric pressure.
A fuel pressure regulator comprising a housing forming a chamber and having opposite first and second generally closed ends, a movable diaphragm including opposite first and second sides each having an area A.sub.D, said second side of said diaphragm including a radially inner portion having an area A.sub.F, and a radially outer portion, said diaphragm being mounted within said housing and dividing said housing into first and second chambers, said first chamber being located between said first side of said diaphragm and said first end of said housing and communicating with the atmosphere so that said first chamber is at atmospheric pressure P.sub.A, said second chamber being located between said second side of said diaphragm and said second end of said housing, a flexible bellows extending between said second end of said housing and said second side of said diaphragm and dividing said second chamber into a radially inner fuel chamber within said bellows and a radially outer vacuum chamber outside said bellows, said fuel chamber being partially defined by said radially inner portion of said second side of said diaphragm, and said vacuum chamber being partially defined by said radially outer portion of said second side of said diaphragm, fuel inlet means communicating with said fuel chamber, fuel outlet means including an outlet conduit having an inlet end located adjacent said diaphragm within said fuel chamber, interengageable valve means on said inlet end of said outlet conduit and on said diaphragm for closing said outlet conduit when said diaphragm is biased toward said outlet conduit, and for opening said outlet conduit to said fuel chamber when said diaphragm is biased away from said outlet conduit, and means for applying a force F to said diaphragm so as to bias said diaphragm away from said fuel outlet conduit, whereby fuel flowing into said fuel chamber through said fuel inlet means flows out of said fuel chamber through said fuel outlet conduit when the pressure of the fuel in said fuel chamber is greater than P.sub.A A.sub.D /A.sub.F -F/A.sub.F.
Dependencies are inferred from the claim text.