CA1282453C - Voltage regenerator for ignition systems of internal combustion engines - Google Patents

Abstract

ABSTRACT

The voltage lost through the formation of magnetic fields and leakage and stray currents on the cover of a distributor and on the insulation of the high-voltage current conducting cables from a high-voltage coil to a distributor and from a distributor to a plurality of spark plugs of an ignition system of an internal combustion engine is at least partially regenerated by a voltage regenerator comprising inductive current trapping means for recovering the current lost through the insulation of said high-voltage current conducting cables, said current trapping means being coupled to said cables at a short distance from the current receiving ends thereof; encapsulated current collector means for receiving the current recovered by said current trapping means; at least some of said current trapping means including unidirectional current flow means permiting only the flow of current toward said collector means; current attracting means inductively coupled to said collector means; and inductive current delivery means for delivering the recovered current from said collector means to said high-voltage conducting cable running from the high-voltage coil to the distributor, said current delivery means being coupled to said cable at a short distance from the current discharge end thereof and including unidirectional current flow means permitting only the flow of current from said collector means to said last named cable.

Description

324~:;3 Thc present invelltion refers to an apparatus for the regenercltion of the voltage produce~ hy a high-vvltage coil in an ign:ition system :for internal comb-lstion en~ines and, more particularly, it is related to a voltage regenerator for ign:ition systems o-f internal combustion engines~ which is capah1e of recover:in~ most of the current normally lost throi1gh leakage an~ stray currents as l~ell as through magnet:ic fields in sa:i.(l ignition system.
As it i.s l~ell. kno~n, the ignit:ion system of internal comb~sti.on engines generally comprises a high-l~olta~e coil l~hi.ch deli.vers through a suitab:le cable to adi.str:ibutor, a current of from 20,000 to 22,000 volts, whi.ch is therea~ter tr~.lnslrlittecl to the brush of the distributor :in order to sequentiall.y send said current to each one o~
the spark plugs i.nserte(l .rn the cylin~lers of the engine, in order to ignite the same in the order in l~hich the engine is desi.gne~ or effect.illg the combustion of the fuel which is fed to the machine through a suitable carburetor. As it is also ~ell know, the sa.id voltage of 20,000 to 22,000 volts prod~lce(l by saicl coi.l, is generally re(luced down to apploxi~ tely l6;000 to 18,000 volts when the current reaches the spark plugs, ~hereby the spark produced by said spark plugs is imperfect and creates a lower temperature of ignition of the fuel, thereby causing the internal combustion oE the Fuel in the cylinders of the eng:ine to be incomplete.

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Due to the relat:ively lower temperature of operation of the sparlc plugs, the electrodes of said spark plugs builcl up a -thick scalc of le(ld ancl carbon, whereby the spark plugs gradually produc~ a more deficient operation and a higher consumption of fuel..
Although some attempts have been made in the past in order to maintain the voltage reaching the sparlc plugs from the high-voltage co:il of an :igniti.on system of an internal combustion engine at a constant level, all of the prior art devices clesignecl or this purpose, were intended to improve the concluction of high-voltage current through the cables and other parts oE an i~nition system of intc-~rnal combustion el~gincs, but ~ithout having attacked the main problem of loss of voltage through magnetic fields and leakage and stray cur-rents passing through the insulations of said ignition system, an~ have rather lestrlcted themselves to try to increase the concluctivity of the cables, the conductivity of the terminal ends of said cables or the neutralization : of the magnetic fields created on the distributor heacl, without however trying to recover the current lost both through the head of the distributor and through the .insulation of the high-voltage current conducting cables.
The prcscnt invention provicles a voltage regenerator for igniti.on systems of internal combustion ~ z cngincs that may he of a very simple construction ancl yet of a high effi.ciency in recovering the current lost through magnetic fiel.ds ancl leakagc and stray currents through the insulat.ion of the lligh-vol.tage current conclucting cables.
rhe present invention also provides a voltage regenerator of the above described character, which will be capahlc of rccovering the current lost through the insulation of the vari.ous high-voltage current conducting cables and other clevices of the :ignition system of an internal combustion enginc, to recycle saicl recovcrecl current :into the ignition s)Tstem in or~er to m:inimize the losses.
More part-i.cularly the prescnt invention provides a vo:ltagc regenerator o:f the abo~e ~escribe~ character, which ~iill procluce an effi.cient spark clischargc i.n the spark plugs of an :interllal combllstion engine, w:ithout however requiring any :increase in the h:igh-voltage currcnt from the coil.
The present Invention also provides a voltage regenerator of thc above i.denti.fied nature, which will be of a very compact ancl sturdy construction ancl will show characte7istics of easy installation without any modification in the stanclard ignition systems of internal combust.ion engines.
Accor~ ng to a preferred embocliment of the prescnt invention, a voltage regenerator for an ignition systcm of an internal combustion engine, in which said ~2~3Z~L53 i.gn:i.ti.on system compri.ses a high-voltage coil a current distributor connecte~] to saicl high-voltage coil by means of a cablc and a plurcllity of spark plugs locate~ ~ithin the cyl:inclcrs of said .internal ccmbusti.on engine ancl connected ~:i.th said distr:ibutor by means of respective cables ~nd saicl voltage regenerltor being useful for recovering the culrcnt lost through the formation of magnetic fields and leakage and stray currents on the cover of the distributor and on the insulation of sai.d high-voltage current conducting cables ~rom saicl h:igh-voltage coi.l to saicl distributor and from said distr:ihutor to said plurality of spark plugs comprises lnductive current trapping means ~or trapping the currc~lt l.ost~thro~gh the insulation of ~ai.~ high-Yoltage current conduct:ing cables said current trapping means be:ing couplcd to sa:i.d c.lbles at a short distance from the current receiving ends thereof; encapsulated current collector trapp:ing means; at least some of said current trapping means inclucling unidirectional current flo~ means permitting only the ~low of current toward said collector meansi current ttract:ing means inducti.vely couplecl to said collector mea~s;
and i}iducti~e current clelivery means for clelivering the reco~ered current rom sai.d collector means to sai~ high-volta~e conducting cable running from the high-voltage coil to the distri.butor~ said current delivery means being coupled to sa:id cable at a sllort di.stance from the current discharge 245~

encl thcreo:~ an~l ;ncluding unidirectional current flow means permi.tting only the flow of current from said collector means to said last named cabIe.
The present invention will best be understood from the following clescription of a specific embodiment, when read in connection with the accompanying drawings, in 1ic~l:
~ igure 1 i.s a partially di.agrammatical view of the voltage regenerator for igni.tion systems of internal combustion engilles bui:lt in accordance with the present invent:ion and showing the mounting thereof around the high-vol.tage conductlng cable from the coil to the clistributor, ; Figure 2 is a diagrammatical cross seetional v:iew taken along li.~nes 2-2 of figure 1 and looking in the direct:ion o:f t~he arrows; and Figure 3 is a eireuit diagram showing the voltage regenerator circui.t for ignition systems of internal :combustion engines as appliecl to an engine eontaining 8 cyl :inclers .
~ laving now more partieular re:Eerence to the drawings and more specif:ically to figure 1 of the same, there i.s shown a voltage regenerator deviee s~litable for being couple~l to an :ignition system of an internal comb~stion engine and which comprises an encapsulating body which is desigllated by means o:~ reference character 1, said bo~y having .

~ 2 ~ 4~

a for]n suitable ~o encapslllate all the main portions of the c:ircuit for the voltage regenerator built in accordance with thc prcsent i.nvent:ion ancl normally consisting of a body of any su.itable plastic mate-rial such as polyester, polycar~onate and thc li.ke, capable of resisting the high-voltages and high tempe-raturcs to which :it ~ill be subjected i.n use. The body 1 normally coml)riscs a curved cylincler 2 which has a plurality o~ e~erncLl ribs 3 to assist i.n the dissi~ation of heat and in thc holding of the various elcments of t,he circuit which are cmbeclded there:into, and has a pair of flat encls 4 such as that shown in figure 1 of the draw:ings, at the center of which a through ~or~ 5 is provided, for the purpose of mount:ing thc bo~ly 1. aroun~ the h:i.gh-voltage current conducting cable 6 ~hich connccts the outlet of the high-voltage coil of thc igni.tion systcm of the cng:inc to the head or cover of tile .~I;.str:ibutor ancl which is clesignated by means o.E reference character G in figure 1 of the clrawings.
: A clamp 8 bu~lt of a good conducting material such as copper, silver or the like, is pressed or crimped around thc insulation of cable 6 at a short distance from the outlet of the high-voltage coil of the ignition system of the internal combustion engine, ancd saicl clamp is thereafter insulated by means of a suitable insulating tape, in order to avoicl any possibility of con~tact with the conducting materi.ll of the clamp 8 or loss of voltage by eddy currents ~824LS3 an~ the li.ke. Clamp 8 i5 connectecl to the circuit of the voltagc regenerator built in accorclance with the present invent:ion and ~hich \vill be described in detail hereinafter by means of a suit-bly insulatecl cable 7 preferably a cable having a plastic l:ining and covered with a fiber glass fabric ~rapped around sa:i-l plastic insulation in order to duly conduct the current that is transmitted to the clamp 8 by ;ncluct:ion througll the :insulation of cable 6 into the circuit which ~i.ll be clcscr:lbecl hereinbelo~.
Frorll the opposite flat face 4 of the bo~y I of t~e voltage regenerator built in accorda~ce with the present invention a plurali.ty of cables 9 extend sai~ cables heing bui:lt :in e.~actly the same manner a~ cable 7 descri~e~l above, in order to conduct current into the circuit of the voltage regellcrator as l~:ill be clescribecl hereinbelow an~ which is entircly cmbec]decl within bocly 1, said current being con~luctecl ~rom the respect:ive clamps 10 similar to clamp 8 cach one of ~hich is crimpecl around the insulation of each one of the high-voltage conducti.ng cables conducting current from the head of the distributor to the spal~k plugs that are insertecl in the cyl.:inders of the internal combustion engine with ~hich the :i.gnition system is associated. The mounting of clam~ps 10 arouncl the insulation o~ the ables from the distr:i.~)utor to the spark plugs is effected at a short distance from thc clistributor head, and said clamps after having been 32~

crimped around the :ins-llation of sai.d cablcs, are suitably i.nsu:lated by means of a plastic tape or the like.
Finally, a furthcr cable 11 extends from the lo~er face 4 of the bocly 1 as shol~n in figure 1 o the dra~ings, in order to conduct current in the opposite way, namely, from the ci,rcuit einbedcled in body 1 and to be de~cribed in detail hereinbelow, towards a further clamp 12 si,milar to the clamps clescribed above, which is crimpcd around the insulation o-f cable 6, but mounted at a short distance :from the head of the distributor, in order to conduct the current recovered by the device af the present invention~ through cable 11. ~nd clamp 12, to be applied around the insulat:ioll of cable 6 at the point identifieLI
above, in order to inductively pass saicl current into cable 6 an~l to the distribu~,or, i.n the form of a recycled current which is therefore recovered rather than completely lost.
The mounting of clamp 12 is effected exactly in the same manner described above, that is, by crimping said clamp around the i.nsulation~of cable 6 near the end of cable 6 ~hich is connected to the head of the distributor, and by insulating said cl.amp by means of a suitable plastic tape or the like.
Ilclving no~Y more particular reference to figures 2 and 3 o the dra~ings, the arrangement and the details of the circuit of thc voltage regenerator built in accordance ~282~ii3 ~ith the prcsent invcntion and suitable for being coupled to all ignition systcm of an internal combustion engine are clearly sho~n as ~;il1 be ~escribed hereinbelow The same reference numer~ls are used to identify like parts as comparcd to those of figore l already clescribed above.
Figure 2 of the drawings shows a cross sectional diagrainmatic vie-~ of the device shown in figure l and ~IcscribecI above in connection with its c~ssential parts, ~hercin the structI~re of the inn¢r circuit embedcled in the bo(Iy l of the cIcvice of the prcsent invention IS clearly sho~n as comprising a pair of incom~lete circumferencial con~I~ctors of either iYire or o metal printecl on a substrate to form the collcctor circuit 13 shown in figure 2 of the cIrawings ~hich comprises an inner circumferencial conductor 15 and an outcr circumfercncial condlIctor l4, connected to each other at one of their ends by means of a conductor lO
; E3ch one of thc cables 9 and cable ll are connectecl to the outcr cond~Ictor 14 through the intermediate of unidlrectional electronic valves diagrammatically sho~n in flgure 2 as dots 17 I~hereas cable 7 is connected dircctly to the attached erIcI of corIcIuctor l5 as clearly shown in ~igu~e 2 of the cIra~ gs A snIall coil l8 is located at each o~e of saicl cablcs 7 9 and l1 ~ithin the body l of the device, that is, complctel~ embe~Idc-I within said body at a pl~ce ~hich is contiguous to thc points ~hcrein the cables 7 9 and ll extend g ., ~ax82~3 outwardly of bocly l, for a purpose to be explained hereinafter.
The dctails of the uniclirectional electronic valves ].7 and the co:ils 18 in relation to the circuits of the voltage regenerator t~uilt in accorclance with the present invention is more clearly shown in -figure 3 of the drawings, whereas the posit-ion of the conductors 14 and 15 is cle.Lrly shown in igure 2 of the drawings, said position being extremely important to accomplish the goals of the present :invcntion as will be explai.necl hereinafter.
\lthough in figures 1 anct 2 of the drawings a voltage regenerator applicable to an internal combustion cng:inc having four cyli.nders is shown, figurc 3 shows, in a more cIeta:i.lecl manner, a circuit built in accordance with the rcscllt :invent:i.01l as appliccl to an eight cylinclers engine, and it must be pointed out that the vol.tage regenerator of the present invention may be applicable to any engine having any numbe~r o:f cyl.inders, by merely providing the necessary numt~er of conductors 9 and clamps 10 as shown i.n the drawings.
Referring now more par-ticularly to figure 3 of the cIraw:ings, a detailed explanation of the nature of the circuit i.nclucIed :in the voltage regenerator built in accorctance with the present invention, together with its rclationshi.p wi.th the stanctard ignition system of an internal I

' ~ 2824L~i3 combllstion engine containing eight cylinclers l~ill be givcn hercinbelo~.~ un(ler the unders~anding that the various parts of the stan~ard ignition system of said internal combustion cnginc havc not becn sho-~n in figure 3 o the drawings since said s~-stenls are very wrll known and the insertion thereof in the -figure ~oukl only complicate the same without gaining any useful purpose whatsoever. It is to b~e understood hol~evcr that the voltage regenerator in accordance ~ith the prescnt invention is appliecl to an ignition system for an internal combustion engine containing any number of cylinders which comprises a high-voltage coil which is connected by means of a suitabl cable to a distributor from which a lurality of cal)lcs c~tencl to conduct the high-voltage current in scquencr to eac`h onc of the spark plugs through respective cables. T}le ~Icvice Or the present invention is cxtcrnally applicablc to said type of ignition system for an internal combustion engin without however modifying in any respect the structure an~l thc arrangement of said ignition system whatsoe~er .
Reterring no-~ to figure 3 of the drawings clamp 8 is crimped aroun~ the insulation of the high-voltage current conc~ucting cable which connects the high-voltage coil to the (listributor of the ignition system at a position wllich is in the vicinity o~ the outlet cont~ctor oE said coil preferably at a distclnce of from 1.5 ~o 4 cm. from the ~8Z453 end of the cable, an~l sti.ll more preferabl.y at a distance o:E Erom ahout 2 to 2.5 cm. therefrom, ancl once the clamp 8 has been duly pressed against the outside -Eace of the insulat-ion of sai-l cahle, the clamp is appropriately insulated by means of a suitable pl.astic or other i.nsulating tape.
The cahle 7 conclucts current which is normally lost through the :insulation o~ sai~ high-voltage current conclucting cable of the ign:ition system~ and delivers the same to the collector c:ircu.it 13 whicll :i.s embeclcled in body 1 of the device of the presellt invent:ion, w:ithout the need of any unidirectional electronic valve in cable 7, in ~ie-~ of the fact that normally the current ~hich i.s lost at the outlet of the coil in the vic:in.ity of ~h:icl- clatnp 8 is arrangecl, is of such an :intensity and high ~ol~.age that it does not recluire any such unidirect:io]lal electronic valve. On the other hand, the plurality of clamps 10 are connected, in exactly the same manner descr:ibed above in connection with clamp 8, to each one of the cables ].eadi.ng from the head of the distributo~
to each one o:E the spark plugs o[ the cylinders of the ~internal combustion engine, ancl each one of said clamps 10 :is crimped around the insulation of each one of said high-volt"ge current conclucting cables from the distributor to the spark plugs, at a position which is at a short distance frolll the outl.et contactors of the heacl of the distributor, preferably at the same distance described in connection with - lZ

324~:;3 clamp ~ '~he cables 9 carry the current lost through the insulat:ion of each one of said high-voltage current conducting cables to~arcIs the circuit 13, but in order to secure that all the current :is conclucted in the appropriate direction, an electronic un:idirectional valve 17 is provLded, which compr:ises a diode 20 and a condenser 21 connected in parallel ir, each one of the cables 9, as clearly shown in figure 3 of the drawings, so that the current coming from each one of clamps 10 an(l through cables 9, will charge the capacitor 21, until the voltage thereof reaches to an appropri.ate level to be discharged, wh.ich d.ischarge is effecte~l towards the circuit 13, in view of the fact that the diode 20 included therein cIoes not permit the return of the current back through cable 9 i.lltO clamp 10. Each one of the cables leaving the distributor head to each one of the spark plugs contains an :i.denti.cal circu:it, in order to secure the recovery of current lost through the insulatlon of said.cables and its conduction tIirough cables 9 and unidirectional valves 17 towarcls collector circuit 13.
~inally, cable ll is connected to circuit 13 on one end ancI to cl~mp 12 on the other end, through the intermediate of an electronic unidirectional valve 19 similar to the valves 17 described above. In this particular instance however, the condenser 23 is charged by means of the current ; ~accumulate~l i.n the collector circuit 13, until the voltage . . .

~824~i3 t-hcrcof is suffi.ci.ent to be dischargccl, directed by the ~lio~le 22, through cablc~ 11 towards clamp 12; Clamp ~2 is cr:impecl arollncl cablc-~ 6 which connects the coil to the d:istri.butor head, at a position in the ~icinity of the inlet o~ said clistributor heacl, namely, at a distance sim:ilar to that descr:ibed abc)ve .i.n connection with cable 7.
Ihc curre]lt conducted to cl.amp 12 is induct:ively transm:itte~l again into the cable 6, whereby all the current lost in the cli.rfelcnt cables is rcco~ered by the voltage regencrator of the present invention and is recyc~ed to the ~listributor, with which the losses of voltage are minimized.
oi~ b.~ck ,o -~ig~re 2 o the c~rlwings, :it may be ~ccn that the spcc;fic shape adopt~ y th~ collector circuit 13 i~ that o~ two conc~ntrical.ly arra~gocl :i~complcte circum:~crc1lt:ial conclllctors l4 .In-l 1.5 connectec~ to each other at onc encl l-y mcans of a conductor 16, the incomplete c:i.rclllllferential con-luctor 14 containing the necessary taps for connecti.llg al:l the external cables of the system as showll in figurc 2 of the clrawings, whereas the inner conccntriC incompletc circumferent:icl1 ConclUCtor 15 .is arr.lnged near thC inner surface of bore S of the bocly 1 of the dcvicc of the prc,~sCnt invention, whereby the high-voltage currcllt passing through cablc-~ 6 from the hi~h-voltclge coil to t.lle clistributor, acts as a suction devicc by the creation o:f magnctic ~iekls ~hlch in a ccrtain way attract the current , . .....

1~8;~453 Irom clamps 8 ancl 10 the~eby boosting the passage of current from said clamps 8 and 10 through the respeetive cables 7 and 9 and the rcspective electronic valves 17 to be collecte~l by mcc)n.~ o~ circuit l3. From circuit 13 part of the collecte~
current passes directly by induction from conductor i5 into cable 6 ancl the main part of sai~l collected current passes throug}l cable ll as mentionecl above through the electroni.c valve 19 to l-e inductively (lischarged through clamp lZ into cable 6~ at a position in the neighborhood of the distributor head.
~ i.nally in order to avoid the loss o~ important amounts of stray currellts at the outlet of cables 7 9 and ll an~l Er(lm ho~ly I of the clevice o.f the present invention a plur.ll:it.y of respective coils 18 are arranged fully embedded ;n body 1 but locate~ exactly at the point where each one of said cables exten(l out~ardly.of the body which coils collect the current ~hich ~oulcl othelw;.se be lost in the form of corona (.lischlrges and the like and returns the same to the c~l~l.es through the .insulation thereof in ~n inductive manner.
Tllc above compl.etes the recovery syst.em for the device of the present invent:i.on ancl it may be seen that the voltage regenerator b-l:ilt in accordance w:ith the pre~sent i.nvention an(l as descri.becl above will be capable of recycling most of the current ~h:ich ~ould otherwise be lost through magnetie fi.elcls Ieakage and stray currents outwardly of the ~L28Z4~3 insula~.:ion of thc various high-voltage currcnt conducting cablcs of ~ :;gnition system for intcrnal combustion engines wh:ich current is fu:l.ly recycled by the device of the present invcntion .in or~ler ~o prcserve the voltagc created by thc high-vo~tage co-il, and in order to improve the perfolmance o.f an cn~-ine by thc production of su:itable strong spark discilarges in thc spark plugs, ~hich ca~lse a more full combust:ion oÇ the fuel in the cy].:inclcrs of the engine.
rhc improvcment :in the effic;ency o:E combustion is SUC]l that, in many occasions, through an analysis of the exllaust gases o~ an engine provided ~ith a device in accordance with the present in~cnt-ion, it may be seen that the mixtùre is renclered extrcmc].y rich, whereby it is normally necessary to throttle the main ~asol.ine spray noz71e of ~he carburetor, :in orde~ to a(lmit lol~cr amounts of gasoline into said carburetor so as to preserve the ~ffi.ciency of combustion with the device of the present invcnti.on \~hich, the~efore, may economi.~e fueL
at a mi.nLmum rate o~f about lO~ of thc fucl that ~ould be consumcd other-iise.
I`he opcrat:Lon of the dev:ice of the present invention as i.s :Eollol~s. All the current trapped by the clamps 8 ancl lO, is conducted through the respective cables 7 and ll to the outer conductor 14 of collector circuit 13 embcddcd in the body 1 of the d.evice of the present invention, partl.y due to thc high-voltage produced in cable 7, partly due ~Z8;~453 to ~the clar~ing and discharging of the capacitors 21 and the unidirect,ional conduction of current by diodes 20 o electronic valves 17 included in each one oi~ cables 9, and partly hecause o~ the attraction e~ertt-~d by the passage of high-voltclge c~lrrcnt through cable 6, which c-reates a magnetic attracting field on the inner concluctor 15 of the colleotor circllit 13 The major part of the thus collected current in co1le~tor circuit 13, is conducted through cable 9 an~
c]amr lO ancl recycled to the distributor in an inducti~e manner as describecl above, by the action of the charging and discharging o~ capacltor 23 and the uni(lirectional conducting ~iiode 22 incluclec1 in the valve 19 of cable 11 Ont-~ other part of saicl cu~rel-t collected -in the co~]ector circuit 13, is incluctively passccl into cable 6 arounc~ which the body 1 o~ the device of ~he present invention is moun~ed, and which passe~ through tht~ bore 5 of said body 1, so that all the curren~ collecte~l by the collector circuit 13 is returned to cable 6, part o~ the same at a position in the neighborhood of the end of said cable 6 ~hich enters into the head of the dis~ributor, ancl one othc~r part o~ whicll is inductively passed into cahle 6, hy means of the surroundlng conductor 15 provided ~ithin the body 1 of the device

Claims (7)

1. A voltage regenerator for an ignition system of an internal combustion engine, said ignition system comprising a high-voltage coil, a current distributor connected to said high-voltage coil by means of a cable, and a plurality of spark plugs located within the cylinders of said internal combustion engine and connected with said distributor by means of respective cables, said voltage regenerator being useful for recovering the current lost through the formation of magnetic fields and leakage and stray currents on the cover of the distributor and on the insulation of said high-voltage current conducting cables from said high-voltage coil to said distributor and from said distributor to said plurality of spark plugs, and comprising inductive current trapping means for trapping the current lost through the insulation of said high-voltage current conducting cables, said current trapping means being coupled to said cables at a short distance from the current receiving ends thereof; encapsulated current collector means for receiving the current recovered by said current trapping means; at least some of said current trapping means including unidirectional current flow means permitting only the flow of current towards said collector means; current attracting means inductively coupled to said collector means, and inductive current delivery means for delivering the recovered current from said collector means to said high-voltage conducting cable running from the high-voltage coil to the distributor, said current delivery means being coupled to said cable at a short distance from the current discharge end thereof and including unidirectional current flow means permitting only the flow of current from said collector means to said last named cable.

2.- A voltage regenerator according to claim 1 wherein said inductive current trapping means each comprises a clamp of a current conducting metal, crimped around and over the insulation of said high-voltage current conductive cables, a cover of an electrical insulating tape over the surface of said clamp, and an insulated cable attached to said clamp, to connect the same to said current collector means.

3.- A voltage regenerator according to claim 1 wherein said inductive current delivery means comprises a clamp of a current conductive metal, crimped around and over the insulation of said high-voltage current conductive cable, a cover of an electrically insulating tape over the surface of said clamp, and an insulated cable attached to said clamp, to connect the same to said current collector means.

4.- A voltage regenerator according to claim 1 wherein said encapsulated current collector means comprises a solid body of a temperature resistant material having a bore completely passing therethrough, said bore having a diameter suitable for mounting said body around the high-voltage current conducting cable from the high-voltage coil to the distributor, a pair of incomplete circumferential conductors concentrically arranged within said body and surrounding said bore, the inner one of said incomplete circumferential conductors being concentrically near the periphery of said bore and the outer one of said incomplete circumferential conductors being arranged concentrically to the inner one of said conductors, and being connected to each other at one of their ends by means of a further conductor, all of the insulated cables of said current trapping means and of said insulative-current delivery means being connected to said outer incomplete circumferential conductor, with said current delivery means being connected at the end of said outer conductor remote from the end which is connected to said inner conductor by means of said further conductor, and with said current trapping means being connected to taps provided along the circumference of said outer conductor.

5.- A voltage regenerator according to claim 4 wherein said high-voltage current conducting cable from the high-voltage coil to the distributor of the ignition system of the internal combustion engine passes within the bore of said solid body so that the current flow therein is perpendicular to the arrangement of said encapsulated current collector means, said inner incomplete circumferential conductor being arranged concentrically around said high-voltage current conducting cable, whereby the current running through said cable induces a magnetic field on said inner conductor, thus constituting said current attracting means for attract-ing the current towards said current collector means, at least part of the current collected in said current collector means passing by induction from said inner conductor into said high-voltage current conducting cable.

6.- A voltage regenerator according to claim 4 wherein each one of said unidirectional current flow means is encapsulated within said solid body and each one comprises a diode and a condenser connected in parallel to said insulated cables, one end of which is connected to said current trapping means or to said current delivery means and the other end of which is connected to said current collector means, whereby as current is received by said condenser thus charging the same, the voltage of said condenser is increased until it is discharged through said diode in the direction of conduction of the same.

7.- A voltage regenerator according to claim 4 wherein the insulated cables of each one of said current trapping means and of said current delivery means is inductively coupled with a coil embedded within said encapsulating solid body, said coil being placed in the neighborhood of each one of said cables, at a point within said encapsulating body which coincides with the exiting position of said cables from said encapsulating body, so as to recover any stray current that may tend to be lost outwardly of said cables and of said encapsulating body.