Internal-combustion engines – Charge forming device – Combustible mixture ionization – ozonation – or electrolysis
Reexamination Certificate
1999-10-07
2001-03-27
McMahon, Marguerite (Department: 3747)
Internal-combustion engines
Charge forming device
Combustible mixture ionization, ozonation, or electrolysis
Reexamination Certificate
active
06205984
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to fuel treatment devices and, more particularly, to fuel treatment devices in turn to be installed in a fuel supply line of an engine.
2. Description of the Related Art
It has previously been proposed, in U.S. Pat. No. 4,492,665, issued Feb. 7, 1994 to Bill H. Brown, to provide a device and a method for treating liquid fuels, to improve the combustion characteristics of the fuels in internal combustion engines, by inserting an elongate metal bar in a casing through which the fluid flows, the metal bar comprising an alloy of nickel, zinc, copper, tin and silver. The metal bar is preferably of triangular cross-sectional area so as to have the exterior surfaces in contact with the fuel and the exterior surfaces of the bar have space-apart elevated ridges for promoting turbulence in the fuel flowing through the fuel casing.
BRIEF SUMMARY OF THE INVENTION
The present inventor has found that improved results in the treatment of engine fuel can be achieved by passing the fuel over a catalyst comprising a bismuth alloy.
More particularly, according to the present invention a fluid treatment device comprises a housing defining a fuel flow passage, the housing having a fuel inlet and a fuel outlet which communicate with the fuel flow passage, and the fuel inlet and the fuel outlet each having a fuel line connector. A catalyst is located in the fuel flow passage and comprises, in parts percent by weight, 2-5% nickel, 40-65% tin, 10-30% bismuth, 2-10% lead and 1-5% mercury.
Preferably, the catalyst comprises an elongate element of cruciform cross-section, which extends longitudinally of the fuel flow passage. In a preferred embodiment of the invention, the elongate element comprises a pair of elongate components, each of which is formed with a slot extending longitudinally thereof to allow longitudinal interengagement of the elongate components.
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