Патент USA US2124228код для вставки
July 19, 1938./ M_ BOETTCHER , ' y 2,124,228 AIR INLET DEVICE FOR INTERNAL COMBUSTION ENGINES Filed March 1, ' 1937 ATTORNEYâ. n Patented Julyl19, 1938 „;„ _ ‘5 ‘ UNITED sfm.'r1_~:fsy PATENT oEFicE AIR INLET DEVICE Eon INTERNAL CoM , 0 EUsTIoN ENGINES Magnus Boett‘cher, Milwaukee, Wis.v VAppli‘ntion Maron 1,v 1937, serial No. 128,375 2. claims. ¿(01. 12s-_124ir This inventionrelates toimprovements in airinlet devices for. internal combustion engines. showing the windshield wiper and showing the improved air inlet device connected inthe vac Heretofore, various devices have beenfproposed uum line for the windshieldr wiper;` for admitting additional air to theintakemani-- ` Fig.` 2 is _an enlarged longitudinal y.Seotional 5, fold of an‘internal combustion engine, .whichdevices are designed toprevent waste of fueland view .through .a portion of the windshield ,wiper 5 I vacuum line illustrating the lnteriorv construc'f, to increase the economy -and eñiciency ofv opera- „ tion of the air inlet device; tion of the motor. These prior-devices have al1 been positioned .directly in the intake manifold Y logthereby necess‘tating either the use ora specially "constructed manifold pipe, the drilling ofk special Fig. 4 is a perspective view. ofthe improved V10. device `showing the two parts thereof separated.` " openings therein, or disconnecting-of the mani- Referring more particularly to the‘draWingV, fold from the carburetor-extension to permit insertion of a relatively complicated air inlet de15:,îvice therebetween.v The majority of these. prior' -‘devices have in addition been provided with variable air controls which do not function effectively until after the motor has attained a. predetermined running speed. _. , the numeral 5' designates an intake manifold pipe of an internal combustion engine, the said engine being of vany standard form and includ- 15. ing the Standard carburetor. .The 4intake,marli' fold pipe 5 has ,one .end connected to thecar blll‘olìol’ and i’ßS other end >connected tothemoï-N tol“, and -Whhen theV motor iSv running thereis ale , It is a general object of thepresent invention " to provide an improved air inlet device which. is> of simple construction and which may be readilyA installed by any automobile user in .a fewminutes’ time. ` Fig._ 3 is a longitudinal sectional view` of'a_ modified form of device; and _' , Y f Ways a vacuum present-in Vthe intake manifold .20.. pipe, which vacuum serves to draw the fuelmix' ture into the Cylinders: , , , It is common practice Vwith.present-day auto-r mobiles to have a threaded opening 6 in the in ,_ „ A more specific object of the present inven- take manifold pipe folfi'eß‘oiViI/lga threadediili-A 5.5 25"; tion is to provide an airy inlet device especially` ’ving l, Which fitting usually has ametal tubular` designed for quick connection in the vacuum line extension 3. A length' of rubber tubingV 9 has one leading to the windshield wiper motor. end slipped over the tubular extension 8 and has ` A further Object of the invention is ,t0 provide an air vinlet device for connection in the 30"`vacuum lineleading to the Windshield wiper motor which is so formed asnot to interfere `with the Operation 0f the Windshield Wiper, Y A stili further object of the invention is to ._ provide a device of the class Adescribed Lso con- 35"~`~structed as to. increase operating economy by i admitting air at au times that the motor, is running Y through an opening` of constant, ef-' feqtive Size, as distinguished fyom‘prior devices' having variableV openings 4which are effective 403 only when . the motor attains a predetermined running speed. ` ‘ ' ‘ ` its" other end connected to a similar extension VIII of the Windshield Wiper motor I I. Thesuction in the' intake manifold iS therefore utilized; lin all 39?" modern automobiles, to operetefa Suction motor Il.A for" Causing mOVemelllì 0f thel Windshield wiper l2- A , _ _ ' ‘ j „ Hel‘e‘ßofol’e auXllIai‘y ail' lrlle'G `devices haveV been formed in 01’ Connected directly to the in,- 35:7 take manifold. In `Some of these prior devices special holes had to be' drilled'in the intakel manifold; in others the intake manifold had toy be Specially formed; and in Still others the de vice‘was insert'able between the intake manifold 'mi and the vcarburetor extension. With all these A'further speciñc'object'of the ,invention "is 'toï prior` devices, therefore, installation was expen provide in> a device »as above described; means in , the _path of the admittedairfor lproc'lucii'ig, a - 45" whirling` action of `said-` air to break V¿the ‘latter upv‘beforegit is introduced into*thefmanifo1d,`thusl aiding invthe vaporization of thel fuel mixture” to,` the end_»ï‘that more complete combustion andy maximumfuel economy‘are obtained. ‘ sive and required thé Services ofi an expert. It is an object of the present invention to pro-V Vide ,en ail’ vinlet4 device Which is readily insert-` _able in the tubular vacuum line leading to 'the windshield wiper to form a ‘part’ of saidline» whereby additional air may be thusvadmitt'ed to the manifold. 'Referring more particularly`v to 50' ‘ With the above andjother objects in view, the- Fiïg. 2‘, the device consists preferably of a two- ,50i invention consists ofïthe improved‘air inlet de- part fitting comprising the parts I3 'and I4; The y vice for internal combustion -engines,*and ‘al1 vits part I3 has a. tubular metal extension I5`pïroject-_` partsand combinations asset forth in the 4'claims ing fromone end thereof anda threaded 'por and all`'equivalentsthereof.` ` y y tion I6 projecting from the othei'ïfend‘thereof. 55°? In the accompanying ydrawing in' which> the The fitting part`|4 has-one end internally- thread-g 5g? same reference numerals fdesignatb the same parts in all of the views; Fig. 1 is an assembly View showing a portion 0 of the intake manifold'in longitudinal section, ed as at I1 to receive the threaded Vextension ‘I6J ' of the fitting part I3, and the ñtting part I4 has a tubular extension I8 projecting in an op posite direction from the extension IB on the fit- 60 2 2,124,228 ting part I3. When the two' fitting parts are In Fig. 3 a modiñed form Vof the invention is threaded together, an internal chamber I9 is disclosed wherein, in place of the crushed wire formed therein, and one of the ñtting parts, preferably the part I3, has a hole 2|] drilled screening 20 other means is employed for break through a side wall thereof for the purpose of ing up the admitted air. In this form of the invention a coil spring 23 ext-ends longitudinally admitting air from the exterior intoI the cham of the chamber I9, and said spring is adapted ber I9. This hole 20 is preferably angled away Í to produce a whirling action on the admitted from the intake manifold as illustrated. The air. In addition said spring may cooperate with end of the chamber I9 next to the intake mani a ball valve 24; whichivalve is urged to substan 10 fold may also be fitted with a filtering screen tially sealing position by the spring when the 10 2I for the purpose of preventing the entrance of dirt or other'foreign matter into the intake motor is not operating. The spring, however, is so light that as soon as there is any vacuum manifold. ` present in the lin-e, the ball 24 will be drawn to In addition, it is preferred to' employ means for breaking up Yand causing a whirling action open position, and air admitted through the air on the air admitted through the drilled opening inlet 20 will be directed toward the ball 24 and 20. Accordingly a batch of relatively small mesh then out toward the manifold, while being agi by the convolutionsof the spring 23. The screening 22 which has been partially crushed tated is inserted in the chamber I9. This screening ball 24' tends to automatically produce a bal 20 anced vacuum condition on both sides thereof is rather loosely crushed so that air may circu so that _there will bea proper amount of vacuum 20 late freely therein. i condition for operating the windshield wiper and V'I‘o installvthe »improved device, it is merely 25 necessary to sever the rubber hose 9 at a desired point and to slip one ofthe severed ends over the fitting extension I8. and the other severed end over the fitting extension I5. Obviously this installation can be effected in a few minutes’ time. In those cars having a greater length of metal forming a part of the vacuum line leading 30 to the Windshield wiper motor, one of the ex tensions I5 may be formed with a fitting similar to the ñtting 'I for insertion into the intake manifold opening 6 instead of the fitting 'I, and a proper amount for causing the admission of air through the air inlet 20. Y Either of the forms of the invention may also be constructed with an overhanging exterior baf 25 lire 24 to prevent -grease from caking over the air inlet opening 29. ‘ It is to be understood that the broad aspect of the present invention consists in the idea of providing an air inlet device which is of more 30 simple construction than the usual device of this nature and which may be installed by con nection directly in the vacuum line leading to the-other extension I8of the air inlet device the` windshieldwiper motor. Various changes reception of the fitting 'I¿ Von the `end of the standard windshield `wiper vacuum line. Most automobiles have the rubber hoserunnin-g up andmodiiications in the exact method of instal 35 ~may be provided with a socket member for the` close to the manifold as shown in Fig. 1 so that 40 the Vtype of installation shown in Fig.V 1 is prac' tical for the majority of cars. « ' _ lation may be devised by those skilled in the art, 35 and all of such changes are contemplated as may come within the scope of the claims. ` What I claim is: Y . 1. An air inlet device for internal combustion 40 engines having a tubular vacuum line leading . In use when the motor is running, a> vacuum from vthe intake manifold to the windshield wiper will-be created in the vacuum line leading toA motor or .other auxiliary device comprising a the windshield wiper motor, and inasmuch as the small tubular fitting having tubular connecting 45 chamber I9 of the air inlet device forms a part extensions projecting from opposite ends thereof of said vacuum line, air will be sucked into the and in substantial alinement with each other and drilled opening 20, whichV air will strike the with the axis of the fitting, said extensions pro mesh of the matted screening 22 and willV bev viding for quick connection of the fitting in said thus agitated, whirled and broken up into a plu line to be supportedV solely thereby from rality of iine streams.v This breaking up'of the vacuum each end of the fitting, there being an air inlet air will result in more perfect vaporization of the mixture and will promote more complete combustion. The air inlet hole 2D is preferably opening communicating with the fitting between 50 said alined connectingextensions, and means for agitating the admitted air. , not over one-sixteenth of an inch in diameter,v 2. An air inlet device for internal combustion 55 and with this small air openin-g, it is found engines having a tubular vacuum line leading that there is no interference with the operation of the windshield wiper motor as the opening from the intake manifold to the windshield wiper is too small to have'any great effect upon the motor or other auxiliary device-comprising a 60 amount of suction existing in the windshield wiper line. By having the opening 20 angled small tubular fitting having tubular connecting vextensions projecting from opposite >ends thereof away from the intake manifold the suction in and in substantial alinement with each other 60 the windshield wiper vacuum line does Vnot act and-with’the axis »of the fitting, said extensions in the same direction as the direction of extent providing for quick connection of the fitting in of said opening, and therefore the admission of saidl vacuum~ line to be supported solely thereby too much air or air at too high a velocity isV from each end of the fitting, there being an air inlet opening communicating with the fitting be 65 prevented; It is to be noted that with the pres ent device air is admitted as soon as the motorv tween` said alined connecting extensions, a ball starts running, but that said air automatically valve in said fitting, and a spring normally urg proportions -itself Vto operating conditions due to ing vsaid ball toward the end of the fitting away ï the fact that the great-er the suction, the greater from the air inlet, said ball tending to produce a balanced vacuum condition in the fitting. the amount of admitted air. 70 MAGNUS BOETTCHER.