US1810193A - Internal combustion engine - Google Patents

Description

June 16, 1931. c. A. moms, 1,810,193

INTERNAL comsusno'u maxim Filed April 22. 1929 may be of reference designate like i Patented June 16, 1931. p

onanrns A. oms, or narrow. omo,

assrenor. 'ro 'rrrom'as AND :nociawarrr LABORATORIES, INC., 0F DAYTON, OHIO, A CORPORATION OF OHIO manner. comnuscrron ENGINE- Application flled April 22,

This invention relates to internal combustion engines, particularly automotive engines, and to the prevention of accumula-' tions of objectionable carbon deposits within the cylinders of such'engines.

One of the principal objects of the invention is to provide means automatically operable upon the manual actuation of a control member-of the engine forJintroducing from time to time controlled quantities ofcarbon remover fluid into the engine.

Another object of the invention is to provide in vehicles propelled by internal c0m-' bustion engines, apparatus which is simple and inexpensive in, construction, is highly effective in operation, and which automatically and intermittently functions to mtroduce a controlled quantity of chemical into the cylinders of the engine upon thenecessary manual actuation of a part used 1n con-. trolling the vehicle. I I

Still another object of the invention is to provide a novel and superior method of treating engine cylinders with carbon remover fluid to maintain the engine at all times free from objectionable carbon dethe cylinders of posits.

Other objects and advantages of the invention' will be apparent from the following description, accompanying drawings and appended claims.

In the drawings in which like characters parts throughout the several views thereof--- 7 'Fig. 1 is an elevational view, partially diagrammatic, of apparatus constructed in accordance with this invention, parts being broken away and in section toillustrate the construction thereof; and

Fig. 2 is a vertical sectional view through a detail of construction.

The drawings, in which ferred embodiment of the invention,

is disclosed a pre illustrate an internal combustion engine It) hav-- m an intake manifold 11 mounted upon a suitable frame or chassis (not shown), which the chassis of an automobile. Suported adjacent the engine 10in any suitale manner isa supply container 12,adapted cover electrically operated valve,

1929. Serial no. 3573057. to holdthe chemical to be injected into the cylinders of the engine 10. As shown, the

container is mounted upon the front side of the dash 13 by suitable brackets 14 bolted to the dash. Container 12'comprises a can or tank of relatively large volume for holding a considerable supply of carbon remover liquid indicated at 15, and has a removable '16 for a filling opening 17 the cover having a vent 18.

Mounted within the bottom of container 12 is a secondary or feeding-container; 20 of relatively small volume, comprising a section of tubing mounted transversely across the bottom of the container,the ends of the tubing being soldered to the opposite side walls of the supply container. Communicating with the upper portion of the space within the interior of the tubing 20 through anorifice 21 in the wall of container 12 is a vent tube 22, comprising a copper rod'having a small bore 23 approximately a thirty-second ofan inch in diam eter. Vent tube 22 extends up and opens to atmosphere above the level of liquid-within container 12. At the opposite side, a supply pipe or tube 25 is connected to con-. tainer 12 so as to be in communication with a port 26 opening container into the lower portion of the space within the interior of tubing 20, forming an outlet for feeding container 20. Tubing 25 is also constructed of a copper rod having a small ore 27, and is of such configuration as to extend up above the level 0 liquid within bend,'then leading to the intake manifold 11 into which it is tapped as indicated at 28. Thespace within feeding container 20 1 communicates with the space within supply through the wall of the container 12 to a reverse container 12 through a restricted orifice 29,

so that gravity flow from container 12 into tubing 20 ismaterially less than the normal rate of outflow from this tubing to the engine. cylinders.

Mounted within supply pipe 25-is an shown in detail in Fig. 2. This-valve comprises a cylindrical casing 30 threadedly receiving at opposite ends plugs 31 and 32, suitable sealin g washers 33 being positioned between the casing and plugs. Plug 31 is formed with a longitudinal bore 34 extending from the interior valve chamber 35 to the exterior of the plug through a threaded nipple 36 which receives a coupling member 37 serving to attach an end of supply pipe 25 to the valve casing. A suitable washer 38 is positioned between the supply pipe and nipple 36 to provide a fluid tight joint.

Plug 32 is provided with a longitudinal bore 40 and with a threaded nipple 41 receiving a coupling member 42 for attaching another portion of supply pipe 25 to this end of the valve casing in fiuid'tight relation. Mounted within valve chamber 35 is a weighted cylindrical valve member 44 necessarily formed of magnetic material such as iron. Valve 44 is formed at its lower end with a circular groove 45 receiving a washer 46 adapted to engage an upstanding valve seat 47 formed at the upper'end of plug 31 about bore 34. The upper end of valve 44 is provided with spacing lugs 48 to hold the valve away from the wall of plug 32 to permit flow of fluid through the casing. Surrounding casing 30 is an electromagnetic coil 50 having a winding 51 so positioned as to set up an electromagnetic field when energized serving to hold valve 44 upon its seat, -the valve functioning as an armature. Leads 52 and 53 of coil 51 are connected to a suitable electricalcircuit of the engine or vehicle.

I As shown, leads 52 and 53 are connected respectively to wires 54 and 55 of the primary of the ignition circuit of the engine containing storage battery 56 and transformer 57. The secondary of the ignition circuit is connected by lead 58 to spark plug 59 for firing the charge in the engine cylinder, the other side of the secondary being grounded at 60. Within the ignition circuit is the usual manually controlled switch lever 62 mounted on the rear side of dash 13 for convenient manipulation by the operator of the vehicle for controlling the running or stopping of the engine 10 in the usual manner. A switch 64 is provided in the parallel circuit leading to coil 51, and a manually controlled shut-oil valve 65 is positioned within supply pipe 25. I

In operation, assuming the parts to be in the positions shown in the drawing, the operator starts the engine 10 by closing ignition switch 62 and stepping on the starter (not shown) in the usual manner. When the ignition circuit is closed, current is supplied from battery 56 through the ignition circuit and also through the arallel circuit including coil 51, switch 64 eing closed. The electromagnetic field serves to hold armature valve 44 upon its seat with sulfitake manifold and supply pipe 25 due to the operation of the engine. During nonuse of the machine, or during operation when the ignition circuit is closed, and no carbon remover is being supplied to the cylinder of the engine, feeding container 20 gradually fills with a charge of liquid. The volume of liquid within tubing 20 together with the practically negligible volume within bores 23 and 27 of pipes 22 and 25 respectively, which fill to substantially the level of liquid within container 12, is so regulated by the construction of these parts as to provide for the accumulation of a predetermined small quantity of liquid therein.

When the engine is stopped upon the opening of ignition switch 62, the inertia of the moving parts of the engine will cause it to turn over several times after the switch 62 is opened. The resulting suction serves to pull valve 44 from its seat and the controlled accumulation of carbon remover is rapidly withdrawn from feeding container 20 through supply pipe 25 and fed to the cylinders of the engine. The engine normally turning over several times after the ignition switch is opened serves to substan: tially drain feeding container 20 and supply this .7 controlled volume of liquid to the cylinders, but such turning over of the engine is not suflicient to'result in any material loss of liquid through the exhaust after it is introduced into the cylinders. The size of the port or restrictedorifice 29 is such that practically a negligible flow takes place therethrough during this period of introduction of the accumulation into the cylinders, so that a desired controlled volume of carbon remover is injected.

In the practice heretofore used, introduction of carbon remover has been carried out at stated intervals, such as about every 500 miles, using a sufficient quantity of carbon remover to effectively loosen the accumulation of deposits which have formed within the cylinders during the intervening period. It is found in actual practice that an operator is apt to omit having this done at proper intervals, and will often run a car for much longer periods even though the car is not operating at its highest efliciency. In accordance with the present invention, the human element of the operator of an engine or an engine driven vehicle is eliminated as a factor in the successful use and application of carbon remover fluid, and controlled small amounts of such fluid are automatically injected into the cylinders upon the occurrence of movements which the operator must make in operating the engine or driving the car. The injection'is carried out intermittently and at frequent intervals as the engine is stopped, so that the fluid is given an op portunity to efi'ect its solvent action during the period of non-use of the engine, and so that accumulation of objectionable amounts of carbon deposits is prevented. Due to the frequent intervals of injection, only small amounts of fluid need be introduced upon each tainer may be provided on the vehicle which will hold a sufiicient volume for normal operation over a considerable period of time.

l/Vhile the volume of liquid introduced may be varied within considerable limits, depending upon the' operation and requirements of the machine, very satisfactory results have been secured by the introduction of about 5 to 15 0.0. upon each application. lAs soon as the sfucition exisgling within tge supply pipe 25 ai s upon t e stopping of the engine, further flow from feeding container 20 is prevented, due to the elevation of the reverse bend in supply pipe 25 above the normal liquid level within container 12. As a further precaution, the construction of valve 44: is such that as soon as the engine has ceased to turn over and the suction fails within pipe 25, the weight of valve Ad causes it to seat by gravity to efi'ectively seal the supply pipe. During this interim liquid gradually flows from supply container 12 into feeding container 20 through, the restricted orifices 29, so that another accumulation or charge is supplied thereto for a subsequent application. To restart the engine, ignition switch 62 is closed and valve 44. is then held upon its seat. The loosened deposits within the cylinders are blown out through the exhaust as the engine is started.

If the customary operation of the vehicle results in unusually frequent starting an stopping of the engine, the parallel circuit 'of coil 51 may be disconnected from the ignition circuit by opening switch 64: to

.throwthis automatic injecting mechanism out of operation from. time to time as desired. 'When this is done, valve 65 within supply pipe 25 is closed to prevent the suction from being efiective upon valve 44 and the liquid containers.

While the method herein described, and the form of apparatus for carrying this method into effect, constitute preferred embodiments of the invention,-itis to be understood that the invention 1s not limited to this precise method and form of apparatus, and that changes may be made in either without departing from the ,scope of the invention which is defined in the appended claims.

What is claimed is: I a 1. Apparatus of the character described,

comprising in combination", an internal combustion engine having a cylinder, an electri-v cal circuit for said engine, a switchwithin said electrical circuit, and means operatively application so that a supply con-- .liquid level in said supply associated with said electrical circuit and switch for automatically introducing chemical into. the cylinder of said engine upon the opening of said switch to break the elecwith said' gnitio'n circuit and switch forautomatically introducing a chemical into the cylinder of said engine upon the opening of said ignition switch to stop the engine. i.

3. Apparatus ofthe character described comprising in combination, an internal combustion engine having a cylinder, a member for stopping the normal operation of said engine, a container for chemical, means for introducing chemical from said container into said cylinder, and means operatively connected with said member and automatically brought into operation upon the actuation of said member for the injection into said cylinder of a predetermined amount ofchemical less than the entire amount of chemical within said container.

4:. Apparatus of the character described, comprising in combination, an internal combustion engine having a cylinder, a supply container for liquid, a feedingcontainer having. a predetermined volume, means for (1' tween the supply container and the feeding container toprevent substantial flow there between during the period of emptying of the feeding container.

5. ln apparatus of the character described, a supply container for liquid, a vent therefor, a feeding'container of predetermined volume, a vent for said feeding container extending abovev the normal liquid level in said supply container, an outlet for said feeding container, and a gravity connection between said supply container and said feeding container including a restrictedorifice to limit the flow fromthe supply container to the feeding container toa rate substantially less than the normal rate of outflow from the feeding container.

6. In apparatus of the character described,'a supply containerfor liquid, a vent therefor, a member positioned within and adjacent the lower portion of said supply container forming a feeding container of predetermined volume,f a vent for the interior of said member extending above the normal container, anoutlet for draining the space within said feeding container, said member having an orifice electrical circuit for said valve connected in of restricted size providing communication between the interior of said supply container and the interior of said member to supply liquid thereto at a rate substantially less' than the normal rate of outflow from such member.

7. Apparatus of the character described, comprising in combination, an engine having a cylinder, a container for liquid, a supply pipe for feeding liquid from said container to said cylinder, a valve within said supply pipe, means automatically operable during the normal running of said engine for maintaining said valve closed, and means for automatically opening said valve to permit the supply of liquid trom said container to said cylinder upon the stopping or the engine. I

8. Apparatus of the character described, comprising in combination, an internal combustion engine having a cylinder, an ignition circuit for said engine, a container for liquid, a supply pipe for feeding liquid from said container to said cylinder, an electrically operable valve within said supply pipe, and an electric circuit for said valve connected to said ignition circuit, the construction being such that said valve is held closed when the ignition circuit is closed, said valve automatically opening as the ignition circuit is broken under the action of suction Within said supply pipe resulting from the turning over of the engine by the inertia of the moving parts after the ignition circuit is broken.

9. Apparatus of the character described, comprising in combination, an internal combustion engine having a cylinder, an ignition circuit for said engine, a container for liquid, a supply pipe for feeding liquid from said container to said cylinder, an electrically operable valve within said supply pipe, and an electric circuit for said valve connected to said ignition circuit, the construction being such that said valve is held closed when the ignition circuit is closed, said valve automatically opening as the ignition circuit is broken under the action of suction within said supply pipe resulting from the turning over of the engine by the inertia of the moving parts after the ignition circuit is broken, said valve then being closed upon the stopping of the moving parts of the engine and the failure of suction within said supply pipe.

10. Apparatus of the character described, comprising in combination, an internal combustion engine having a cylinder, a container for liquid, a supply pipe for feeding liquid from said container to said cylinder, an ignition circuit for said engine, an ignition switch for manually opening and closing said ignition circuit, an electrically operated valve within said supply pipe, an

parallel with said ignition circuit, a separate switch for opening said valve icircuit the actuation of said member to stop the engine to permit opening of said closing means to feed carbon remover liquid to the cylinder as the engine is stopped.

12. Apparatus of the character described, comprising in combination, an internal combustion engine having a cylinder, an intake manifold for said engine, a container for carbon remover liquid, a supply pipe leading from said container to said intake manifold, an ignition circuit for said engine, means for maintaining said supply pipe closed during the normal running of said engine, and means automatically operable upon the opening of said ignition circuit to permit the opening of said closing means in'the supply pipe to feed carbon remover liquid to said intake manifold and cylinder as the engine is stopped. I

13. F or use with an internal combustion engine having a cylinder, and a membei i or stopping 'the normal operation of said engine; means for automatically introducing into said cylinder a predetermined amount of carbon remover, and means adapted to be operatively interconnected with said member and said introducing means and constructed to be brought into operation upon the actuation of said member to automatically efiect the introduction into the cylinder of a predetermined amount of carbon remover as the engine is stopped.

14. In the operation of an internal combustion engine having a cylinder, the method which comprises intermittently introducing into the cylinder a predetermined small quantity of carbon remover at controlled intervals as the engine is stopped, to thereby maintain the cylinder free from objectionable carbon deposits.

15. Apparatus of the character described adapted for use with an internal combustion engine having a cylinder, and amem ber for stoppirg the normal operation of said engine; a container for chemical, a connection for introducing said chemical into said cylinder, means for controlling flow of chemical through said connection, and mechanism for automatically actuating said flow controlling means upon the operation operation of said engine,

of said member to stop the engine to cause the introduction of chemical into said.

cylinder. I

16. Apparatus of the character described adapted for use with an internal combustion engine having a cylinder, and a memher for stopping the normal operation of said engine; a container for chemical, a connection for introducing said chemical into said cylinder, avalve for said connection, said valve being closed during the normal and means adapted to operatively interconnect said member With said valve to be actuated, upon the operation of said member to stop the engine, to automatically open said valve for the introduction of chemical through said connection into said cylinder.

In testimony whereof 1 hereto ax my signature s CHARLES A THOMAS.

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