Патент USA US2406103код для вставки
Aug” 20» 394@ c, Q RANDALL - __ Ú ZAMÄÉE CRÀNKQASE SCAVENGER Filed Sept'. 19,A 1945 3_ Sheets-Sheet 41 , l, sNvEN-roR ¿ma MALL l _ ATTORNEY _Aug...20, 1946. 2,406,103 c. c. RANDALL, GRANKCASE SCAVENG‘ER Filed sept. 19, 1945 s shams-sheetA 2 /2 _ iNvENToR Äugß 20% 39436» 4 'ì fc. n RANDALL ì CRANKCASE l- SGAVENGER > Filed Sept. 19, 1945 » 2,406,103 ì I 3 Sheets-Sheet 5 `Patented Aug. 20, 1946' 27,405,103 j N UNITED STATES «PATsNTfoFFlCEÍ _' 2,496,103 CRANKCASE SCAVÉNGEE » Clark C. RandalL'ulOak’uPark, . , Application September 19, 1945.,`- Serial No. 617,201 a’olaims. (c1. 12s-,17155 l .This invention is directed to new and useful im- ~ ' provementsin'crank‘case scavenger. ' lis 4utilized to produce- the air pressure necessary to accomplish the desired results.- > It is ay Well’known, fact thata serious problem is ever present -due to the ,incomplete and .unsuccessful elimination from internal combustion automotive engines of vapors, gases, and mois ture. produced during the operation of such e _ And still another object of this invention is »to provide an improved crank case scavenger that ¿will .be safe in operation, will not interfere in any way with the normal operation of the engine and may be quickly fitted to and become part of any conventional automobile or truck engine. A Yfurther object is to provide a unitary struc Water,._ gum, resinous and acid-laden vapors` resulting from combustion enter the crank case 10 ture comprising air scoop and Yaspirating means of simple design that may readily be attached to Space. as a result of leakage between the pistons engines. ' ~ - and cylinder Walls the volume` of leakage being a conventional automotive engine to operateso large or small depending upon the condition of ' as to 'thoroughly scavenge the engine._ the engine. The result is a serious deteriorating effect on lubricating'oils and the production of „ The word “scavenger” has been used herein harmful deposits and sludge that follows, all of This distinction is that a ‘,‘ventilator”` does not » which interferes with the efñcient' operation of _ cause fumes While pressure a “scavenger” that will adequately creates adequate remove¿pres-. the sure ‘to in fact removethe undesirable .gasesas the engine and shortens the life of; theparts thereof. ` ` . f. . a . .It is »recognized that attempts have heretofore been made t0 solve this problem by providing various means to ventilate the engine and crankV Well as ventilate the engine. case .to remove these harmful gases and vapors but none of these means has proved efficacious for internal combustion engine'for automobiles vor_ trucks utilizing one form of the invention herein described. various reasons. ' ' ~ The usual internal >combustion automotiv engine is provided with Ventilating or breathing means whereby fresh air is admitted into the crank case and permitted to be exhausted there Y advisedly as distinguished from' v“ventilator.”»„- In the drawings: ~ l . . .ç y ~ 1 Fig. 1 ‘is a side elevation View of a conventional - Fig. 2 is a side elevation view of portion of an- Y other conventional form ofsuch an engine on which lis installed a scavenger embodying this in vention. ‘ ' Y » from. Often this is induced by motion of the 30 Fig. 3 is a side elevation View of a portion-of still another conventional form of engine utilizing vehicle that tends to withdraw the air from the crank case. Y This airflow has also -been caused this invention by means of a unit-attachment.-` „ 4. by- positive pressure means such as the exhaust, Fig. 4 is a' plan View of the air pressure scoop manifold vacuum or engine fan but inv all such cases the pressure has been inadequate to thoroughly svcavenge the fumes and gases and the means for >accomplishing the results have been either too cumbersome or have involved- change in engine design or both and some of the meansÍ attachment used as a part-> of one form _ofthe . used have been harmful to engine operation.A It is the primary object of this inventionl to > crank case scavenger herein described. ' - -» Fig. 5 is a plan View of-a conventional liywheel t cover cut awayto receive air scoop shown in* Fig. 6 is a sectional view taken along line. lì-lil -, of Fig. 1. , provide a means for effectively removing` or, Fig. 'l is a plan View of the scavenger unit com prising the flywheel air scoop and venturi Vas scavenging such undesirable gases from the crank shown in Fig. 3. . m > . Fig. 8 is a side elevation view of another form casev of an internal combustion engine that is simple in construction and that may be installed 45 ¿of a scavenger embodying’ the invention herein' on--the conventional types of automotive engines described. Y In detail the engine blockfis indicated by the sign. , reference character l, the crank case -2, and the flywheel casing 3. A typical air inlet to the crank 1 Another object of this invention is to provide a crank case scavenger whereby an adequate air` 50 v_fcase is shown at 4 and the breather outlet at 5. without major interference with the engine de- ,t pressure is created and so directed to thoroughly scavenge the crank case at all times during engine operations. - , - Y ' » " ' ' . Still a furtherwobject is to provide such a de An aspirator or Venturi attachment Vli is con-v nected with breather outlet 5 by any well known means, such as hose and clamp connection 5a. This attachments is a unit comprising an outlet vicje whereby the conventional automotive engine 55 ¿extension 'I and a larger air pressure conduit v8 » 2,406, 103 . 3 l _ _ 4 surrounding outlet extension 1 and extending . y on the lower ñange of the engine block. The breather outlet here is indicated by I9 with the from a point above the lower end of conduit 1 to a point past the lower end of the outlet extension. ` usual aspirator or Venturi attachment 6 con nected thereto, by connector 20. 'I‘he upper end of conduit 8 is secured to conduit In the modification shown in Fig. 3 the .breather 'I and closed by any well known method, as shown 5 at 8a. `Conduit 8 is provided with an air pres sure receiving connection 9 extending at right angles to the conduit 8 and joining the conduit 8 at a point,.above„the ..downwardly..„extendingYendw, of outlet extension" 1. Thei‘lower-end-.of -conduit‘lo outlet 2| is positioned in the side of the engine block I, near the ñywheel casing 3. This permits _8 is sheared as shown to provide an angular out generally by reference character 22 and the ven turit by 23. The air scoop comprises the same let orifice l0. t the use of a unitary structure shown in Fig. 7 in whichthe air scoop and .yentur-i-farefformed as a unit. ¿Referring to' Fig. ’lithg air scoop is indicated attachment plate 2'4 having outlet air opening Venturi unit to »function as hereinafter e'X‘lolainedsf.:,` 25;:andfconduit 26 leading therefrom. This con-_ , `The conventional ñywheel casing 3 is~.-p1l‘«,Qjlided,15L ¿iuitßß .becomes the air pressure receiving con , Thus the aspirator attachment 5 provides a " >duit of venturi' 23 connecting with outlet conduit v _ with the usua1 removable @over n that is cut away (Fig. 5) as at l2 to 'provideeantfairioutl"fe-.îl 21:.;Whichtasnrroundszfthe outlet ,extension 28 in to the air pressure scoop attachment shown inM _f the _mannerA hereinbefore described. The inlet The flywheel ofgusual construction is" end 29“of^'conduit 28, in this modification is then Y Fig. '4. , shown at vI3 having teeth «I4 for connection with 2_0 connected by means of hose and clamps, or any conventional starten VFI'he-l.iiywheel:casingfisfpro- e.. otheriwell yknown `rrneans tocthe'áoutleirbreathenî i.' ' ' vided with the Vusuahebre'atlien :openingsakánotr-.f 1 This provides a: îuni-tary: ‘structureathattioanobe:aV ' shown-à »or -an~air» opening .mayebe‘ lmadetif-neededt. The‘air scoop.'attachment...Fig` ï easilyfatta'chedftorfaccomplisir the*‘tlfi'oroughescav=-> is formedtwith'itf . , enging action-when‘th'e engine isîfin ‘operation-2` a . connecting plate! íL5 tourved-tozfitf theîfcontourf`25 .. In’themodi/ñcationtshown.in‘liugsßlthefaspiratin .if of lSwîthatßwillialignëwithïholes the iiywheel-:eoverel I".V E'-It is‘providedfwithlholes? |1512 fof '-.theïoover igt-1.1' , meansis the`~ sameiastshown in but-instead@ of theî-t air.: pressure# receivingî. l'connect-,ioni2.91> biein'g‘eár ' joined to an air scoop receiving its pressuretf-roncuf.:> whereby covera--H itin‘f'anyr can A«loef welle-known# secured toethe`~ manner.' lïñywheel «Thi's'fiair .casing-1 the niiywheel.: it ‘ is -'directly/v1.fc‘onnectedbA witlnithe scoopi'ffatta'chmentspiate v»l5 v«"i’s lformedf'zwithîf an »30 _outlet.=3 0 "off a smallblowen f3.| .iîtha‘tqisi'mounteduto-‘sf , ellipticalainoutletil‘ô'»leadingttofconduit :H5 £74Thus « ~ the sidefof-the enginefblo'ck by. any desiredfbracket» _it i'sf-seenethatv-whenf-theëairiscoopús A"attached to ~~î means.`l 'BlowerM 3 IP is 'foperatedi by fan :associate the _flywheel coversthe air _foutletf-I-ßf'willfbe'fadjaàf.v eleetric.=-motor.l 3'2 'operating'.>fromtgthe1¿electrica cent-»theìteeth Mlòf ñy-wheel» Hi:`»1i'Conduit.Lv |'1 v'ex circuitfoffthe’automobile or truck eng-.inettol _ tendsfforwardly from the-iñywheelandfthegoutlete35 end-‘andthe connection ‘9i are »joinedetogether by'. .f a sectionlf‘of >Fair..vir'ïiressure» conduit =..\|.8 " by' »'»îanyt well-f'I i _ .wheel/1to1;l Itis-ofcourse the'.` blowing.:.frrieansibut'.` moreï desirableißtofutilizeithe “some ¿in stancesY thefseparate-,f:independent blowin "mear-is» Í Witiiï'îthe ‘constructionf-hereinabovedescribed fiti'lf’ shown in :Figi-18 mayfsbe' morewadaptableìfí'ï How i: ever, in both cases the full .blowing capacit-yëisïl». canbe seen that whenever-the’‘fen-'gine:issinloperafee utilized: :sofas :to: produce:.aadequatezipressureà to'. tion the flywheel will rotate in litho-:direction of withdrawßthe'~fumes»;.;.» , lçnowr-rclainping'ijneansr2 ` ’ 1 ‘ ' . YIn?someainstancesnthe eflywheïel casings; dono move rapidly'lpast outletsïflZ fandffl 6 l’and wifliiact-f 1: havef..~removab1e2covers. t:.Inffsuch.;installations fi . ., as outwardly -a `'blo'werato through forcee»V conduit substantial' I1. îamount'- ofeîa-ir. '45 is apparent.thatatheîair z‘outletstZ ~ andi: holes-:ajl-:Sbno' .shown as out from the cover in Figiâswilltbeieuto‘f intothe'bottom.ofzthecasingn ~ , . .' » pressurefwilllbe eXertedfinl-theldirectiomof ther." , arrows-through'conduits: fi 'I and'.v I 8;ïfconnectionf9y ‘i’T 1. .A crankfcasetscavenger forfan internal come-ef. bustionèengine e-providedè withia' -breatheresysteml _ atmosphere-through :orifice l1|-.|Jf. îiThi’sïrapid move-fv 50 ‘ffor.-1thé~.~"crank«:case-fandehaving a---ñywheel w-it _ ‘~ mentre-of;air"past¿outletiextensionß’la will'create ay 1' . suction@or~---=vaeuum~»thereintitoI i-rapidlyfwithdrawf fr gasesfiromé-fthe-î‘crankfcase tofweffectztheeneeded teetht one itsïperiphery,=_comprising-Lan ~.airJ sooopeï attachment A"adapted-#to bewpositioned «adjacent-»G1 the‘l'teeth-.iof - the# iiywheel-efor receiving: the‘fljaire seafvengingiactionly As thislactionf progresses .fresh moved: by Jsaid#teethg'f-¿a `:Venturi-»attachment`Ã» ' air will be drawn-into.fthei'crank'icaseï .through-‘154;v adapted t:to: be connected with theeoutlet@portion- «y breathe?t-.inlet . A.'I‘heffmovementl ofothe”.automa--v of `the Í’breatheri-_systems-anda ¿conduit-f'c'onnectingï`z‘bile in- a. f direc ion from` Vîlefti'to. ‘ rig-,htfwill-f¿causeflip air to pass the angular outlet orifice. I0 to creat .~. anfaddeìiïîsuction to' assistïàin.y .theîwithdrawals'oi ' the crank case fumes. said’sair scoop-attachment:-with*‘saidßventuriratdâf the tachment the* breatherfßsystemfto iiywheel; whereby"A willî “be-fi the*directed~« '» airwithdraw lmoved past f-umesiromthere».V »by Lthe'ffou 'the teeth-of» tlet of It is to be noted that .thisigo' action‘walone :tis: far-sffvfroms su-ii‘ieieni-.1Y -to-i eiiect .the needed/'result _if ‘ It has been found and demonstratedäithat¿there crankease.w »« _ Y 2. `»Aicranleease@scavenger for an internal com-2.» bustionfJ-engine A‘ providedï-withf‘a fbreatheri system»L pressureucreate'd ibytt'he‘ flywheeleblower; actionefis of Suoh'stren’gthßthatr 'substantially complettafand 'mi' -teeth n-iits “periphery-and» a: cover zthîereforgtzcome-e.. thorough crank case scavenging is obtained . ' prisinga an Lair »scoop-».attaíchmentwa Venturiî at-f. " l Irii’f‘the‘v modiii'cationaillustrateci'einl-=Figo@> :the tachmentàß'a conduit iconnectingifthe `ilr-iletioñfth mainî features;eareisidentical .withf those; herein-,~ venturi with the breather outlet, an air outlet i abovefdescribediand zf'orfthismeason. thei-reference'îf' i said flywhe'el'îîeoveri adjacentitheîcîteeth of the' characters. remainethe samelffor these? .com-mon 1:70 "wheel, saidf.airiscooncompnising- a »plateriorme feat-.uresí'àV The'amly: difîerìencealcetween -the‘ struc-~ foi'íatta'ehm‘ent zto'said fcover' lover»:said.lairfoutlet ture`s'=,il.lust1=ïatedt.imlï‘igsaff an air»¿outletï'adapted-.to be falign'edr with@theîßeoveirS andiY 2*» is:l ' the‘ positi'onvf f " air outlet whenthe plate is attached, a condui the=r`outlet-ïiis engine"- block shown-looming' ïioutf'irr-fFig-.rzeit?'is fromz’thefi'sidef v.showin as lo'catedzq; ‘of @the loadings.'- from> thewair `ccmtle'tue‘ot'.saidiìpiataV anda _ imeansaoonnectingîß s'aidficonduitrwithfsaidVenturiä i ‘I 2,406,103 5 attachment whereby air moved by the teeth of the ñywheel is directed through the venturi to eiïect a rapid Withdrawal of air from the crank case. 3. A crank case scavenger for an internal com-` bustion engine provided with a crank case and having a ñyWheel with teeth on its periphery, comprising an air scoop attachment adapted to be positioned adjacent the teeth of the flywheel 6 for receiving the air moved by said teeth, a Ven turi attachment adapted to be connected with the interior of the crank case and a conduit connect ing said air scoop attachment with said Venturi attachment whereby the air moved by the teeth of the ñywheel will be directed through the ven turí to Withdraw fumes from the crank case. CLARK C. RANDALL.