Apparatus for introducing a fuel additive to the fuel tank of an automotive vehicle
First Claim
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1. Apparatus for introducing an additive from a reservoir into the fuel tank of an automotive vehicle, comprising:
- pumping means comprising a fluid pressure actuated displacement pump including first and second chambers;
means for selectively connecting said first chamber to a source of fluid pressure;
first valve means for admitting additive to said second chamber in response to fluid pressure being applied to said first chamber; and
second valve means for connecting said second chamber to said fuel tank in response to fluid pressure being removed from said first chamber.
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Abstract
An apparatus for introducing a fuel additive into the fuel tank of an automotive vehicle comprising a pumping device including a pneumatically actuated displacement pump the pumping element of which is displaceable by pressure against the force of a pretensioned spring by means of a control valve and the control valve is preferably directly actuable by the lid of the fuel tank.
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Citations
20 Claims
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1. Apparatus for introducing an additive from a reservoir into the fuel tank of an automotive vehicle, comprising:
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pumping means comprising a fluid pressure actuated displacement pump including first and second chambers; means for selectively connecting said first chamber to a source of fluid pressure; first valve means for admitting additive to said second chamber in response to fluid pressure being applied to said first chamber; and second valve means for connecting said second chamber to said fuel tank in response to fluid pressure being removed from said first chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for introducing an additive from a reservoir to a fuel tank, comprising:
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fluid pressure actuated displacement pump means having a first chamber selective connectable to a source of fluid pressure and a second chamber alternatingly connectable to a source of additive and said fuel tank; first check valve means connected between said source of additive and said second chamber and open in the direction of said second chamber; and second check valve means connected between said second chamber and said fuel tank and selectively openable in the direction of said fuel tank. - View Dependent Claims (19, 20)
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Specification