US1460964A - Fuel-saving device - Google Patents

Description

J. HYVERT FUEL SAVING DEVICE July 3, 1923.

Filed March 24, 1923 6 11 f, d/wi g Patented July 3%, i923.

JEAN nirvana, or sr. DENIS, SEINE, reason.-

FUELfiAVING DEVICE.

Application filed March 24, 1923. Serial No. 627,415.

To all whom it may concern: 7 i Be it known that I, JEAN Hrvnn'r, a citizen of the French Republic, residing at St. Denis, Seine, France, 27 Rue Petit, have invented certain new and useful Improvements in Fuel-Saving Devices, of which the following is a specification.

The present invention has for its object improvements relating to a device for effecting a saving of fuel in internal combustion engines of any suitable type, and is an improvement on the device of applicants copending application, Serial Number 525,- 464:, filed Dec. 28th, 1921.

The objects of said improvements are to increase the efliciency of such devices and to more completely utilize the heat contained in the exhaust gases. For this purpose, in a first chamber in which water is vaporized and dissociated, is located a nest of tubes which, in that part, replaces the exhaust pipe of the motor and through which, consequently flow the exhaust gases, the com-' bined cross sectional openings of the tubes of said nest being equal to the cross sectional area of the exhaust pipe.

According to another characteristic feature of the invention a. second chamber is located in an exhaust gases collector, (which may be, in case of need, specially arranged for that purpose). This collector contains a coil through which flows steam and products of decomposition of water coming from the first chamber.

By that arrangement the heat contained in the exhaust products is economically used.

In the accompanying drawing is shown diagrammatically, partly in section by way of example a form of construction of the device which is the objectof the invention.

The first chamber may be placed near the motor as shown in the drawing, but, of course, may be located in any suitable place with reference to the motor, under condition however, of being placed as near the cylinders as possible in order to avoid losing heat. It may, in case of need, be directly bolted to the casing containing the second chamber.

On the drawing, M is the motor. The exhaust pipe 1 is interrupted at some point of its length (as near the motor M as possible) where it is joined to a nest of tubes 2. This nest may be made preferably of a heat con ducting metal such as red copper, and the combined internal cross sectional area of the tubes of said nest is equal to the cross sectional area of pipe 1 in order to avoid any harmful resistance to the exhaust. At its other end, the nest of tubes 2 is joined to an extension 1" of the exhaust pipe, which ends in an exhaust tank (not shown).

The nest of tubes 2 is contained in a chamber 3which is the first chamber of the device. At the top of this chamber over the nest 2, is located a pipe 4: in which flows water to be decomposed. This pipe is pierced, with a plurality of small holes 5 through which drops of water fall on the nest 2. At the base of the chamber 3 is mounted a blow-oil cock 6 adapted for evacuating any excess water which may accumulate at the bottom of the chamber.

In an exhaust collector 7 of the motor M is located a coil 8 of a heat conducting metal, preferably of helical form in which flow steam and products of decomposition of water coming from the first chamber. The coil 8 is joined, on one side, with the box 3 by the pipe 9 fixed on the upper wall of said box, and on the other side, by the pipe 10, to the inlet valve (not shown) of the motor.

The normal arrangement of the exhaust collector 7 is not always adapted for locat ing the coil 8. When such is the case, the usual exhaust collector of the motor is replaced by a chamber of a suitable form for that purpose.

The working of the device according to the present invention is easily understood: Water flowing through the pipe 4 is distributed by the holes 5 onto the nest of tubes 2. This nest, through which flow the exhaust gases, is heated enough for completely 9 vaporizing water, and for producing the dissociation of a portion of said water. Steam, hydrogen and oxygen thus obtained exhaust from the box 3 by the pipe 9 and come in the coil 8. The latter being in direct contact with the heat from the hot gases exhausting from the motor through the exhaust openings 11, is heated to a very high temperature, and owing to this temperature steam still existing in the mixture is dissociated when said mixture flows through the coil and consequently the tube 10 brings to the motor a mixture of hydrogen and oxygen. Under these conditions the saving device has its highest efiiciency, and, as said rear before, the heat contained in the exhaust gases is used as completely as possible.

What I claim is 2-- A fuel economizer for internal combustion engines for use in combination with the exhaust pipe of an engine, comprising, a chamber, a portion of exhaust pipe entering the chamber, a portion of exhaust pipe leaving the chamber, a bundle of tubes, positioned in the chamber, and coinrnuncating the said exhaust pipe portions, and means for introducing a liquid into the chamber and onto the tubes, said bundles of tubes having an aggregate cross sectional flow area at least equal to that of one exhaust pipe portion, said means comprising a conduit positioned in the chamber and above said bundle of tubes, and a series of apertures in the conduit, extending the entire length of the bundle of tubes, whereby to spray fluid onto the tubes.

In testimony whereof I have signed my name to this specification.

JEAN HYVERT.

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