High pressure fuel supply system for natural gas vehicles
First Claim
1. A cryogenic pump comprising:
- (a) a vessel for containing compressed gas and liquid;
(b) a first chamber in said vessel with an inlet therein for receiving gas and liquid;
(c) a second chamber in said vessel communicating with said first chamber for receiving and dispelling gas and liquid;
(d) a third chamber in said vessel communicating with said second chamber for receiving and dispelling gas and liquid;
(e) a reciprocating means separating said first, second and third chambers from one another and for drawing and compressing gas and liquid in any one of the first, second and third chambers;
(f) first one-way means in the inlet for enabling gas and liquid to pass into the first chamber;
(g) second one-way means between said first chamber and said second chamber for enabling gas and liquid to pass from said first chamber to said second chamber;
(h) third one-way means for enabling gas and liquid to return from the second chamber to the first chamber;
(i) fourth one-way means between said second and third chambers for enabling gas and liquid to pass from said second chamber to said third chamber; and
(j) fifth one-way means for enabling gas and liquid to be expelled from said third chamber to the exterior of the vessel.
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0 Petitions
Accused Products
Abstract
This invention relates to a medium and high pressure liquid natural gas fuel system for internal combustion engines and for other cryogenic systems. A cryogenic pump comprising: (a) a vessel for containing compressed gas and liquid; (b) a first chamber in said vessel with an inlet therein for receiving gas and liquid; (c) a second chamber communicating with said first chamber for receiving and dispelling gas and liquid; (d) a third chamber communicating with said second chamber for receiving and dispelling gas and liquid; (e) a reciprocating means separating said first, second and third chambers from one another and for drawing and compressing gas and liquid in any one of the first, second and third chambers; (f) one-way inlet means for enabling gas and liquid to pass into the first chamber; (g) one-way means between said first and second chambers for enabling gas and liquid to pass from said first chamber to said second chamber; (h) one-way means for enabling gas and liquid to return from the second chamber to the first chamber; (i) one-way means between said second and third chambers for enabling gas and liquid to be passed from said second chamber to said third chamber; and (j) one-way means for enabling gas and liquid to be expelled from said third chamber to the exterior of the vessel. The invention also relates to a single action suction and double action discharge pump which can be readily removed from a confined space.
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Citations
27 Claims
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1. A cryogenic pump comprising:
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(a) a vessel for containing compressed gas and liquid; (b) a first chamber in said vessel with an inlet therein for receiving gas and liquid; (c) a second chamber in said vessel communicating with said first chamber for receiving and dispelling gas and liquid; (d) a third chamber in said vessel communicating with said second chamber for receiving and dispelling gas and liquid; (e) a reciprocating means separating said first, second and third chambers from one another and for drawing and compressing gas and liquid in any one of the first, second and third chambers; (f) first one-way means in the inlet for enabling gas and liquid to pass into the first chamber; (g) second one-way means between said first chamber and said second chamber for enabling gas and liquid to pass from said first chamber to said second chamber; (h) third one-way means for enabling gas and liquid to return from the second chamber to the first chamber; (i) fourth one-way means between said second and third chambers for enabling gas and liquid to pass from said second chamber to said third chamber; and (j) fifth one-way means for enabling gas and liquid to be expelled from said third chamber to the exterior of the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A cryogenic pump comprising:
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(a) a vessel for containing compressed gas and liquid; (b) a sump with an inlet therein for receiving gas and liquid, said sump being connectable to a source of gas and liquid; (c) a first chamber in the vessel communicating with said sump for receiving gas and liquid from the sump; (d) first one-way inlet means between the sump and the first chamber for enabling gas and liquid to pass into the first chamber; (e) a second chamber in the vessel communicating with said first chamber for receiving and dispelling gas and liquid; (f) a reciprocating piston separating said first chamber and said second chamber from one another and for drawing and compressing gas and liquid in any one of the first and second chambers; (g) second one-way means in the reciprocating piston between said first and second chambers for enabling gas and liquid to pass from said first chamber to said second chamber; and (h) means for enabling gas and liquid to be expelled from said second chamber to the exterior of the vessel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification