Sept 10, 1946. HE. CROZER Em 2,407,478 ANTIKNOCK OR DETONATIOÑ DAMPENING DEVICE Filed Marcnzo, 1944 ` 2,407,478 Patented Sept. 10, 1946 i UNITED- STATES PATENT OFFICE 2,407,418 ANTIKNocx on nE'roNATIoN DAMPENING DEVICE Harold E. Crozier and .Albert G. H. Vanderpoel, Hawthorne, Calìfr‘ ~ Application March 20, 1944, Serial No. 527,252 2 claims. (c1. '12s-25) 1 Our invention relates generally to internal ¿combustion engines and more particularly to sim ple and efficient means for counteracting and dampening detonation or engine “knockf’ and the principal object of our invention is to provide simple and efñcient automatic means for intro sageway I6, said tube being connected to the wall of collar by a narrow web I1 through which is ducing steam vapor to the carburetor to mix with the combustible gaseous mixture drawn into the cylinders. formed a duct I8 the inner end of which com ì The steam vapor when entering the combustion chamber acts as a coolant during the explosion 2 a source of water supply which may be the water jacket of the engine or the radiator. Connecting the carburetor with the air filter is a collar I4 in the center of which is a short vertically disposed tube I5 having a Venturi pas l0 cycle and >its expansion throughthe differential municates with the center of the Venturi I6. vThe steam generator includes a metal disc I9 . >with `a spiralv duct 20 in its upper portion, said Lduct being closed Aby a cover plate 2I. Bolts or screws 22 pass through cars on the cover plate into in temperature will act as a cushion or dampener the manifold, thereby securing the generator respectively producing a gas of its own to further thereto. _ 15 assist combustion, so that detonation, more famil Thus with the cover secured on the disc, the iarly known as an engine “knock” is thus elimi duct 20 provides an elongated steam generating nated. _ It may readily be seen that with a device of this kind, higher compression ratios can be utilized chamber. Secured to cover plate 2I and leading from the inner end of duct 20 to the cuter end of duct I8 is a conduit 22. As a result of this arrangement the steam or moist vapor from the generator en Further objects of our invention are, to provide ters the carburetor at a point in advance of its a device of the character referred to, having a main nozzle. A small tank. or container 23 is simple and effective steam generator, constructed located below the source of water supply I3, and so as to` be conveniently mounted on the exhaust 25 located in the bottom of said tank is a valve manifold of the engine and thus be heated by housing 24 provided in its upper end with an inlet the exhaust gases passing through said manifold 25 which is normally c.osed by a downwardly materializing more power and fuel economy and « also permitting the use of lower -grade fuels. and further, to provide means for utilizing the opening check valve 26. A stem 21 connects valve velocity of the air entering the carburetor for 26 to a float 28 within tank 23. regulating theamount of steam to correct propor 30. Leading from the source of water supply I3 to tions for all engine speeds and throttle positions. the lower portion of valve housing 24 is a conduit With the foregoing and other objects in view, 29 in which is located a valve 30. our invention consists in certain novel features Leading from the lower portion of tank 23 to of construction and arrangement of parts which the outer end of duct 20 in the steam generator will be hereinafter more fully described and 35 is a conduit 3|, the flow of water through which claimed and illustrated in the accompanying is controlled by a valve 32 actuated by a conven drawing in which: tional thermostat 33 located on exhaust manifold Fig. 1 is an elevation view partly in section and I2 adjacent the steam generator. showing the device associated with the air ñlter, Through the action of ñoat actuated valve 26, carburetor and exhaust manifold of an internal 40 a constant supply of water is maintained in re combustion engine. ceptacle 23 and under a predetermined degree of Fig'. 2 is an enlarged horizontal sectionl taken ~ heat from the exhaust products of combustion on the line 2-2 of Fig. 1. passing through manifold I2, thermostat 33 will Fig. 3 is a vertical section taken through the open valve 32, thereby permitting water to flow 45 through conduit 3I into duct 20 in disc I9, which center of the steam generator. Fig. 4 is a horizontal section taken on the line latter isA also heated by the products of combus 4-4 of Fig. 3. , tion passing through the exhaust manifold. Fig. 5 is a detail section of a ñoat actuated valve Thus, the Water ñowing through the elongated for controlling the flow of water to the steam gen duct in the disc I9 will be heated and ñnally con erator. Referring by numerals to the accompanying drawing which illustrates a preferred embodiment 50 verted into steam which is drawn through con duit 22, and thence through duct I8 to unite and mix with the air drawn through the venturi and of our invention, I6 designates the upper portion such air enters »the carburetor to unite with the of a conventional carburetor, I I the'air filter asso liquid hydrocarbon to form an exceptionally ef 55 ciated therewith, I2 the exhaust manifold and I3 2,407,478 x) fective and powerful gaseous fuel for the engine. The addition of moisture in vapor form, to the gaseous fuel drawn into the combustion cham bers of the engine, materially increases the power output counteracts the formation of carbon in 5 the combustion chambers and assures smooth running of said engine~ , 4 herein shown and described without departing from the spirit of the invention, the scope of which is set forth in the appended claims. We claim as our invention: 1. The combination with an internal combus tion engine, its exhaust manifold, carburetor, and an air filter, of a collar connecting said ñlter and carburetor, a venturi axially located in said cover 20 is directly attached to the exhaust mani fold and has a relatively large heating area with 10 collar, the wall of said collar being provided with a duct, the inner end of which communicates a small water space thus insuring the rapid and with the center of said Venturi, a receptacle, iioat effective generation of steam while the device is actuated valvular means associated with said re in operation. Y ceptacle for maintaining a constant supply of vlë'loat actuated valve insures a constant supply Water therein, a heater mounted on the exhaust of water in receptacle 23, while thermostatic .15 manifold and provided with a tortuous passage valve 32 regulates the flow of water to the` steamì Y way, duct leading from said receptacle to one generator and passageway I6 regulates the end of said passageway and a duct leading from amount of steam to correct proportions in rela the «other end of said passageway to the outer tion to engine speeds and throttle position. ' end of the duct that leads to said venturi. Thus it will be seen that We have provided an 20 2. In an anti-knock or detonating dampening anti-knock or detonation dampening device device, the combination with an air ñlter and which is simple in structure, inexpensive of man a carburetor, of a collar connecting said filter ufacture, exceptionally economical in point of and carburetor, a member disposed concentri fuel consumption, capable of being readily used cally within said collar and provided with a in connection with practically all internal com 25 venturi, a narrow radial web connecting the wall bustion engines, and said device being very ef of said collar with said member, said member fective in performing the function for which it is provided With a duct, the inner end of which intended. communicates with the center of said venturi It Will be understood that minor changes in and means for supplying steam to the end of said The steam generator comprising disc I9 and the size, form and construction of the various ` duct. parts of our anti-knock or detonation dampen 30 ing device may be made and substituted for those HAROLD E. CROZIER. ALBERT G. H. VANDERPOEL.