US1974865A - Fuel economizer - Google Patents

Description

25, 1934. B. M. GOLDOFT El AL 1,974,865

FUEL ECONQMIZER Filed Jan. 25, 1 932 2 Sheets-Sheet l P 1934- B. M. GOLDOFT El' AL 4 1,974,855

FUEL ECONOMIZER Filed Jan. 25. 1932 2 Sheets-Sheet 2 wvg Patented Sept. 25, 1934 mm srA'ras PATENT? ornca Application January 25, 1932, Serial N0. 588,786

1 Claim. (Cl. 137-152) The object of this invention is to provide an intemal-combustion engine with a simple attachment whereby the fuel that is taken in through the carburetor will be augmented by hydrocarbon vapors sucked out of the crank casing and by damp air derived from the atmosphere and the ing idling and starting of the engine but will bring the supply back into usewhen the engine is run- ,ning under load, as more fully hereinafter set forth.

Referring to the drawings annexed; 29 Fig. 1 is a side elevation ofa common form of water cooled internal combustion engine having my attachment connected thereto.

Fig. 2 is a vertical sectional view on the line 2-2 of Fig. l.

Fig. 3 is a vertical longitudinal sectional view in detail oi the atomizer.

Fig. is a horizontal sectional view taken on the line of Fig. l; and

Fig. 5 is a vertical sectional view taken on the line E5-5 of Fig.

Referring to ,the drawings by reference characters, ill designates a ring or block clamped between the outlet of the usual carburetor and the lower end of the vertical member of the intake manifold. Formed radially in this ring is a fuel passage 11 which is controlled by a manually ad justable needle valve l2. Communicating with the inner end of the passage l1 and lying wholly within the ring it is a perforated tube 13 which receives the mixture oi fuel as it leaves the afore said passage 11. This tube has one end set in a recess is formed in the inner wall of the ring and its other end supported on a screw plug 15 tapped q into the ring 10 at the opposite side. limited to upper side of the perforated tube 13 is a series of blades it annularly arranged in the manner of propeller blades and provided with numerous perforations. This propeller-like fixed perforated diaphragm is circular in shape and approximately fits the internal diameter of the ring 10.

in a. boss 1? formed on the ring 10 is a lateral pwsage it which communicates with the passage 11. Une end of this passage is closed by a removable plug is and the other end is tapped to receive $5 the aforesaid plug 19 or the threaded end of a nipple 20. This nipple 20 receives a mixed stream of fuel and dampened air through the medium of the following devices:

A small bore tube 21 is connected to the crankcase of the engine at a point above the oil level 00 therein, and a. similar tube 22 is connected to the water jacket or other part of the water system of the engine at a point below the normal level of the water therein so that this pipe 22'shall always be filled with water. The water pipe 22 dis- 95 charges a minute quantity of water onto a sponge! 23 enclosed in an upright conical casing 24, the tube 22 being connected to the cover 25 of this casing by means of a valve casing 26a in which is mounted a manually operable needle valve 27, the purpose of this valve being to-govem the amount of water'delivered onto the sponge. The cover is provided with one or more air holes 26. The lower, discharge end of the conical cup 24 is threaded onto the upper end of a T-coupling 28. The sponge 23 rests on a perforated diaphragm 29, and the bottom of the conical cup is provided with a drain-hole 30 adapted to drain off any surplus water that may drip past the diaphragm 29. To prevent water, as water running down into the T-coupling 28, should there be a surplus feed of water from the pipe 22, we provide an upstanding pipe 31 within the sponge cup, this pipe 31 being desirably extended upwardly to apoint near the diaphragm to thereby insure nothingbut dampened air entering the upper open end of this tube Ill.

The tube 21 is connected to the other, depending end oi the T-coupling 28, and the lateral branch 32 of this IF-coupling is connected to the aforesaid nipple 20 through the medium of an automatic valve which is so constructed that when the intake manifold is subjected to a high vacuum, (as in idling and in starting) this valve will be completely closed to thus put out of commission entirely the auxiliary source of fuel and thus perwit the idling and starting adjustments to be more accurately made and maintained than would be possible if the auxiliary fuel supply were in commission all the time. As soon as the engine is running under load and the vacuum in the intake is therefore reduced by the opening of the usual throttle, the valve automatically opens to permit the auxiliary devices to go into operation.

The aforesaid automatic valve consists of an open-ended tube 33 having one end tapped into the outer. end of the nipple 20 and its other end clamped against the nipple 32 by means of a swivel-sleeve 3d screwed onto said nipple 32, the shouldered outer end of this sleeve 33 engaging I press the piston into closed position. Normally the spring 39 overcomes the spring 40 and thus holds the valve in open position. One or more slots or perforations 41 are formed in the tube 33, within the sleeve to permit the incoming stream of fuel to pass around the valve when the same is in open position.

When the engine is running under load conditions, the suction will not be sufficient to close the valve 35 and the suctionof the engine therefore will draw into the perforated tube 13 a mixed stream of damp air and vapors from the crankcase and thus insure the same being mixed with the stream of fuel coming up through the carburetor. In this way, we not only get rid of the crank-case odors, but make use of the same as a part of the fuel charge of the engine. The mixing of a stream of dampened air with this auxiliary supply of fuel increases the mileage with a given quantity of fuel coming up through the carburetor. The needle valve 27 is kept adjusted to virtually a bleed position, so that water will pass this valve only under suction, and even then only a minute quantity is drawn down through the supply pipe 22, so that at no time will the air carry enough water vapor to interfere with the proper operation of the engine. The function of the long coil spring 39 is to hold the valve 35 open except under the excessive suction in the intake manifold which occurs while idling and starting. The function of the lighter coil spring 40 is virtually to start the piston valve on its closing Kill movement, to insure against sticking; without this starting spring 40 the valve would be pushed against the spider 37 with the result thatit might not promptly respond to heavy suction and would therefore remain open all the time.

A feature. of importance is the atomizer mounted in the uptake of the intake manifold. The perforations in the tube 13 insure a mixed stream of fuel entering the manifold in a plurality of jets underneath the perforated blades, and the perforated blades insure a thorough mixture of the two streams of fuel (one coming up from the carburetor and the other coming in through passage 11) and also a thorough and very fine comniinution of the water particles to the end that in the engine cylinders under the intense heat of the explosions these particles will perform their usual function efiiciently, and therefore augment the hydrocarbon fuel.

It will be observed that the inner end of the long spring 39 bears against an outwardly facing shoulder in the nipple 20, and that therefore by screwing the valve-tube into and out of the nipple the strength of the spring may be varied to suit the 39 is all that is sufficient; that is to say, it is not p r icular engine in which the device is applied; and-this adjustment may be maintained by a lock-nut 42 adapted to jam against the outer end of the nipple 20. The adjustment of this spring so necessary, to also adjust the anti-sticking spring 49. f

In accordance with the provisionsof the patent f i statutes, we have herein described the principle of operation of our invention, together withthe apparatus which we now consider to represent-"the best embodlments'thereof, but we desire to have it understood that the'apparatus disclosed is only illustrative and that the invention can be carriedout by other means. Also, while it isdeslgned to use the various features and elements in the combinations and relations described, some or these may be altered and others omitted and some; of the features of each modification may be em bodied in the others without interfering with the 1 more general results outlined, and the invention extends to such use. In addition.to the forego-- i} log new results it will be observed that we literally burn as fuel the crank-case odors and are thus enabled to do away with the necessity of a: special appliance for getting rid of said odor Also we reduce carbon formation, first by a mo complete burning of the gasoline because ofour atomizer and also because the water vapor ca ried in with the air keeps the carbon that i sjmfi" formed in a soft condition and thus precludesor: minimizes carbon formations. Also because of the] thorough manner in which we remove the gasoline from the crank-case, dilution of the crank-case v oil is reduced to a bare minimum. Because of the 139 heat of the engine most of the gasoline coming down from the cylinders is vaporized before it gets into the oil so that by reason of the constant suction action we withdraw and make use of all this gasoline vapor. It will be understood also that valve 12 is adjusted so as to allow the oil vapor and the damped air to enter the manifold in proper proportions and this additional fuel so enriches the carburetor mixture that it makesit necessary to re-adjust the carburetor to meet the 20 new condition, with consequent cutting down of to close the valve being weaker than the other spring, this weaker spring being arranged to surround said guide-pin and press at one end against v the piston-valve and at the other end against said guide, conduit means being provided whereby the gaseous fuel may pass around said pistonvalve when the same is open.

BYRON M. GOIDOFT. JOSEPH ROSCOE.

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