US1637591A - Fuel economizer - Google Patents

Description

Aug. 2, F H ROTH v FUEL EGONOMIZER Filed Anz. 25, 1925 2 Sheets-511er??I 1 v gfx/vento@ Aug. 2 1927.

F. H. ROTH FUEL ECONMIZER Filed Aufl; 25, 1925 2 Sheets-Sheet 2 rnmnfo'c a? Frank H. REU-L Gufo: m13

Patented Aug. 2, 1927.

UNITED STATES FRANK H. ROTH, F :BAY SHORE, NEW YORK.

FUEL ncoNoiirIznn.

.Application led August 25, 1925. Serial No. 52,457.

The object of the invention is to provide a device for use in connection with internal combustion engines, such as those employed for propelling motor vehicles, so that any unused Jf'uel nding its way past the piston rings and into the crank case will be returned to the combustion chamber of the engine and utilized, thereby preventing dilution of the lubricating oil and therefore 1ncreasing its period 0f usefulness; to provide a device which, while returning unused gases,

to the cylinders, will also supply moisture which will tend to keep any carbon present in a soft state and therefore prevent its adherence to the cylinder walls and to the valve seats and permit its ejection through the exhaust on the scavenging strokes; and to provide a device of this character which may be readily attached to any of the conlU ventional forms of motor vehicle engines.

With this object in view, the invention consists in a construction and combination of parts of which a preferred embodiment is illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevational view of a well known form of vehicle motor, showing the invention applied thereto.

Figure 2 is a top plan view of the invention, the connections between the crank case and circulatory system and the dash control beingbroken away.

Figure 3 is a vertical sectional `view on the plane indicated by the line 3--3 of Figure 2.

Figure 4 is a lon itudinal vertical sectional view on the p ane indicated by the line 4 4 of Figure 2.

Figure 5 is a central detail sectional view f the connection with the radiator overflow.

Figure 6 is a similar sectional view of the connection with the crank case breather.

The mixing valve l0 which constitutes the essential element of the invention is placed in communication with the intake manifold 1l between the carburetor 12 and the inlet valve. It is also placed in communication with the crank case 14 by a iiexible tubular conductor 15 connected with the breather or filling tube 16. Further, it is placed in communication with the circulatory system by means of a flexible conductor 17 connected with a radiator overflow 18.

The mixing valve 10 is formed with an outlet 1 19 and the pipe 2O threadin 1y connected with this leg serves as a, means or CIJ supporting the valve as well as a conductor effecting communication between it and the engine cylinders. The preferable means of mounting, where the vehicle em loys a vacuum tank, is to drill and tap t e top 21 of the carburetor and insert a nipple 22, this nipple connecting with one end of the cross leg of a T 23. The opposite endof the cross leg connects with the tube 24 leading to the top of the vacuum tank 25, the vacuum tank feeding the carburetor in the usual manner, as by a conductor 26. The pipe 20 at the end remote from the leg 19 connects 'with the lateral leg of the T.

A regulating needle valve 27 is carried by the mixing valve 10 and disposed in axial coincidence with the outlet channel 28 of the outlet le 19, having a seat 29 at the entrance end of t e channel 28. The proper setting of the needle valve is maintained by a nut 30 threaded upon it and bearing on the machined face of a boss 31 on the mixing valve.

The connections between the lexible tubes or conductors 15 and 17 and the mixing valve consist of nipples 32 and coupling nuts 33 and similar connections are made between these conductors or tubes and the breather cap and overflow pipe with the exception that the nipple 34 connecting with the cap of the breather tube passes through said cap and is engaged by a nut 35 to retain it connected therewith, a gasket 36 being interposed between the nipple and top of the cap to prevent leakage.- The connection between the overow ipe and the tube 17 is in the form of a T 3 one end of the cross leg being connected with the overiow tube and the lateral leg being connected with the tube or conductor 17. The cross leg, when in attached position, is disposed vertically, leaving the remote end disposed downwardly and this open end is controlled by a iiap valve 38 pivoted as at 39 and held in normally closed position by a counterweight 40.

The T 37, when the valve 38 is closed, closes the overflow, but an excess of steam may be readily discharged since the valve 38 is held yieidingly in closed position and surplus water may readily flow out ,by depressing the valve. What steam or moisture is present, however, is revented from escaping by the valve 38 an on the suction strokes of the engine passes through the conductor 17 to the mixing valve 10. Like` wise, such unburned gases as may be present in the lcrank case are, upon such suctionA valve Q7, suchcarbon as may be present being held in a state of suspension' by being 'retained in a sooty condition until it is finally'- ejected through the exhaust.

Air is admitted `to `the mixing valve for mixture with the moisture and gases` the.A

provision for this consisting of a pair of valves 4l of which the balls 42 are spring-- actuated to be yieldingly held lon seats 43 of screws 44, these screws having axial ducts 45. lThe proper setti-ng of the screws will secure the desired compression of the springs to insure the" unseating of -the balls. an'

amount just suiiicient to admit the 'desired amountofair.- I l' The setting of the needle valve .27 should be lsuch that the motor may be enabled. to utilize all of the waste gas that it can under full load, for'the amount to be delivered by v the device may be regulated for less loads than full loads by means of a plug Valve 46 mounted inthe outlet 'leg 19 and controlling the duct or channel 28 therethrough.` The plug valve is actuated from a dash control consisting of a flexible stein 47 terminally connected with. anopeiating knob 48, 4Jthe stem being housed in a flexible tubing 49v and terminally supported atv the mixing Valve by a bracket piece 50 into the'eye-ofV which it is inserted and is frictionally held.

The stem 47 is connected to the valvevby insertion through a' diametrical hole in 4a post- 51, this post being-pivotally mounted on an arm 52 connected with the plug valve.- The stem is retained in connection with the post by a set-screw 53' engaged in an axial hole in the free end-of the post and bearing upon the stem.

inea'aeei y The invention having been described, what is claimed as new and useful is: y

l. in combination with an internal combustion motor, a mixing valve in communication with the intake manifold of the motor, al conductor effecting Ycommunication between lthe mixing valve and the crank case,

a moisture supply conductor connected with the mixing valve, a valve carried by the mixing valve and mounted for fixed setting to regulate the supply from the mixing valve forfull load consumption of the motor, and amanually controlled Valve interposed be- .tween the mixing valve `and the intake manifold for regulating the supply from the mix- 'ing valve for variation lof load conditions l under full load, the ilast said valve having a'l remote control.

- 2. In combination with an internal com.- bustion engine and radiator therefor, a mixling valve fin communication with the intake manifold ofthe motor, a'conductor-effecting communication between said mixing' valve and the motor crank case, asecond 'conductor effecting communication between the mixing valye and the radiator overiiow, valve controlled' air inlets for the mixing valve, an adjustable needle valve controlling the outlet of the mixing valve,-and ,a yieldingly seatedl outwardly Opening valve conv'trolling'the radiator overiiowat the pointof connection of the conductor therewith.

3. In combination with, an internal comv bustion engine, the .carbii'reton'vacuum tank land radiator therefor, a mixing valve, a

tubular connectionl between the top of the lcarburetor and the vaccum tank, a` T interposed. in said connection, apipe connecting the mixing valve with said T, tubular connections respectively effecting communication between'the mixing valve and the v motor` crank case and said valve and the radiator overflow, valve controlled air inlets'for the mixing valve` and a plurality-ofoutlet controls for the mixing valve`I one lieing for fixed setting and the other for adjustment according to operating conditions.

ln testimony whereof I aiiix my signature.

FRANK H. ROTH.

Images