DE1476301A1 - Piezoelectric ignition system with magnetically operated vacuum switch - Google Patents

Description

PATENT ADVOCATE
DIPL..INO.

HELMUT GORTZ H76301 Frankfurt a. MaM *

27 - T «L 41944

Clevit "Corporation, Cleveland 8" Ohio, 09UL Piozceloktrischos ignition system nlt magnetically operated vacuum switch

The present invention relates to a piezoelectric ignition system with a magnetic switching arrangement. she
it is described in its application to the ignition system of a fire engine "although it is not limited to it"

So far “ar ea Qblioh, a“ Schaltvorriohtiing alalctxlaoji in Bciho between a piezoelectric Spanxmngsgonerator ναΛ one
Inenergy consumers, for example an ignition card, to aohalton.
Such a switch is normally located on the crank wool of the motor, and according to its rotation with this zueamaon the circuit is alternately closed and opened, ii \ doB a bridging conductor provided in the switch to one of
source anagahendan Leitvagakabal and ainaa awieaan τοη dar Sflkidkarsa anngahanflen Laitun ^ akabel vorbelgaftUirl will «Yaltara details elnaa such Sjateaa are In dar snaritami aottan patent

ochrift Nr. 3 oo9 975 and the sohwebanden aaarikanlsohen patent- '

. · ·
anneldun / i Hr · 121 664 included ·?

Is a rotatable Oberbrilekongkontakt in dor in an ignition circuit just described "arranged in a way, ao ao are necessarily air between lh «and dan gagenttberllegwnd anaordnaten

Cables present · This means that the ignition system is based on the conditions of the atmospheric phenomenon.

Practicing finfltioe on his performance · May like some examples

■ AD ORfQINAL

O 9 FJ Ί R / f) «',? Π

U76301

Suffice it to say that you have to walk when you have an electric Charge skips an LuftBwlaohenre.ua, energy loss on »due to the ionization of the air in the space also fluctuates according to the constantly changing The spark gap conditions the arc length, creating the ignition gate gear becomes irregular Ss goes during the skip The charge lost energy through the air and was in Fora of light energy and electromagnetic radiation · Electromagnetic Radiation, in turn, disrupts the Hundfunkapektrua Fluctuations in humidity and atmospheric pressure also change the performance of the Zundsysteas. Finally the holder is mounted on rotatable parts of the motor, which is not useful as a laser.

Therefore the main component of the invention is a pieftoelectrlaohen ffflndayataaa, known by the dl · lack of the mower Ignition ajateme avoided alnd

Cin more · Target 1st creating einee piemoelektrlaohen ignition system · _r da · unlike au not previously known 2ttndsy "tttD" n of fluctuations in ümgebungabedlngungen impaired

One aim of the invention is the creation of a pieaoelectrl- • ohen Ignition system · in which the above-mentioned air space and the which has occurred so far · loss of energy has been avoided.

In addition, an aim of the invention is the creation of a piezoelectric ignition system alt a magnetically responsive vacuum switch, in which the place for the attachment of the switch can be selected according to the respective requirements and is not limited to the crankshaft. With this system

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The holder can turn or move, magnetize, somewhere on the motor in the Haha Actuator carrying tail are attached »or eboth the Switches as the magnet can be attached locally, in which case a calibrating rotating or calibrating switch can be used as soon as both are ordered.

Further advantages, features and application opportunities of the invention result from the drawings and the naohetehendim Eearelbung "

Vif · 1 a typical combustion engine, with the flywheel wagjelaeeen let,

FIG. 2 shows a more precise partial analysis of the parts shown in FIG. 1 Motors old of the invention ageateea pieaoelectriaohen 3yatea, with the Deotliobfceit half of the Sobalter τοη the page »about 9o ° aua aeiner lorsallage rereetat, ge • geigt iet,

? ig. 3 shows a flat illustration of another log arrangement and

Fig · 4 «ine aoheamtlMhe Oaretellvag a ·· pieaoelectrlechen Zündeyateae matched the * rf ventilation in aneai Mebrsjlladermotor.

The invention is based in part on the creation of a Zündajeteaa for a Terbrenntamotor ait feat arranged and moving a crank and an aa motor sentlerten MnA-

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The ignition system has a piezoelectric voltage source that is connected to the spark plug in Heine and is actuated by a moving part of the engine and periodically generates an electrical potential as a function of the rotation of a crankshaft alt the voltage source and the spark plug electrically connected in series. A magnet is provided in the WHO of the switching arrangement, so that the £ this periodically, viewed laterally in response to sound is rotation of a crankshaft of the engine is actuated and the EreIo swiechen the w Spannangsquelle and the spark plug echlioßt and Opened.

Flg. 1 xelgt a typical internal combustion engine 1o and Fij. 2 in a more precise representation of a crankshaft 12 and a camshaft of this engine. On the camshaft 14 is an eccentric disc 16 pressed on, surrounded by a rotatable annular sleeve 1Θ 1st.

The piezoelectric ignition system according to the invention has a piezoelectric Spannungoquelle _f 2o which is fastened in a suitable Weis "bolted to the Kurbeluehäusewand 22 of the engine 1o. The piezoelectric voltage source has a piezoelectric element 24 which responds piezoelectrically when compressed and is surrounded by a housing 26. The Clement 24 consists of one or more parts of polycrystalline ceramic * material such as Barlumtanat, Leadlrkonat or similar, which are polarized in a suitable way and which are old electrodes. For the arrangement shown, two elements (not visible as such) are used which are mechanically connected in series and electrically in parallel. Their sweet ends are connected by contact with the housing 26 and in the middle between the elements there is a plurality of contact plates 28 which are electrically coupled to the live cable 3o.

909836/0428 _tAD original

An articulated lever 32 is arranged between the one outer end of the element 24 and the housing 26 and presses the elements together upon angular movement. In this case, a high electrical potential is generated and this is maintained until it is emitted in a Veite explained below. By releasing the elements, a further potential, but of opposite polarity, is generated _e

The angular movement of the lever 32 is determined by the sleeve 18 constantly pressing against it in connection with the speed of rotation of the motor. The sleeve _1, although not rotatable as such, follows the eccentric path of the disc 16. The lever periodically generates an electrical potential as a function of time τοη the rotation of the crankshaft 12

The live cable 3 should be connected to a magnetically responsive vacuum switch 34 and a spark plug 36 in the leg. The switch 34 is a road haulage holder of a known type and has a Oehluse 38 extending in the longitudinal direction from which the air let evacuated so that a vacuum τοη less than Io mm (fcieoksilberdruok consists in it. The Oehtuse 38 sltst on the stationary attached KnrbelgangusewanA 22. Two fteed contacts 4o are exposed on opposite load ace housings 38 and extend aarin in redirection to each other, whereby they sin opposite each other and overlap sioh lslofct «As a result of Ass la the Qehsnse existing raise TsJonsrns «lrA« 1 * left mlsat Sa ionized to a substantial degree. Therefore ale reed contacts are very ktan are close together so that AsJ fluctuations in the sheet days are avoided Usually there are Ale ReeAkontakte 40 la Distance from each other and are periodically In seldom dependent * 12 auras produce a magnet from the rotation of the crankshaft 42 contracted. This magnet is only in outline

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Figo 2 shown because he sits on the flywheel and eioh old him turns. When rotating the Sohwungre.de · not shown that is, the reed contacts 4 ″ are exposed to the field of the magnet 42 and close the circuit. The switch 34 and the magnet 42 can can of course also be arranged the other way around, so that the switch is on the flywheel. However, the effect then has to be taken into account centrifugal force and other problems are taken into account *

Preferably a double magnet 42 is used and so on the flywheel arranged that a Ugedjcontakt close to the one Pole and the other reed contact is close to the opposite pole when the magnet is in operation and opposite the switch ^ lies-

If one now considers the invention from its further aspect, so it can be assumed that the piezoelectric voltage source 2o acts as a mechanically charged capacitor and the 8o holder 34 this charged capacity with an energy consumer like s »B <. the spark plug 36 connects. Advice this a low resistance » worth, eo flows a very high peak eo during the discharge by the switch, which determines the series resistance of the entire circuit from the voltage source 2o to the spark plug 36 will. This spike current wears out the surfaces of the reed contacts 4o, especially their contact points.

In order to weaken the current, a relhen resistor is used in the pulp with a «higher value than the load switched. Flows through the current increases the resistance, the voltage drops, vtid dl so that the same current flows through the holder. Since the current is the same everywhere in the circle, the resistance can be

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any point of the circle (injoordntt «orden. A common one Resistance wire (see the LtltungeJcaljal 3o), as it is with car « it is common to beffrenaen the steep ffellcnfora and Avoid radio interference at high frequencies * u, iot beaondoro suitable

In short, the Syaten works, ie the initial rotation of the camshaft 14 results in the generation of an electric motor Potential by actuating the voltage sources 2o, and dioMS Potential discharges over the heel 36 la more precisely laterally Dependence τοη dor rotation of the crankshaft 12 gonau su the time, where ignition is necessary, however, during each revolution of the flywheel, the gate 34 of the magneton's head 42 is suspended. The duroh release of the sueaenengepreoten Elements generated potential is used in the same way, if it is not desired, one of the potentials after Hate to derive

In Pig · 3 another way of arranging the magnet is suit Sehalter shown · Is it allowed to use both the switch as a Also to attach the magnet in a stationary manner, the switch is attached in the manner described above and the magnet in a suitable manner ? olse at the height of the flywheel housing (shown aloht). Between the switch 34 and the magnet 42 is one movable magnetic cover 44 old magnetic windows provided that the magnetic flue of the magnet 42 sdt periodically of switch 34 can work when the window of the Shiraz opposite the switch. The Absohlraung 44 1st aa sesten of the crankshaft 12 and coaxially attached to it, eo dafi with its rotation and in a sideways dependence on the Sohaltcr 34 is actuated by the magnet 42. The Peneter of course BC attached leg, switch, window and magnet

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«Rleickaeitif properly aligned with each other.

Daο window 46 can be a bloQa opening no so that the magnetic flux through the umbrella made of hechpexacablom EatorIaI ' can pass through, or it knows from a material with less bless lech permeability

4 zei ^ t a piezoelectric a ifehrcylindexisündayBtea according to the invention. Whether. ^ Leiob rtax "int oee special AtieftDminfeftrai can be shown, Syatea yn elnaa Faohaann without further information with tln * a" inai ^ en Sohalt "r JittfMtollt wardtn ·

Jn T ± g, 4 let one, i ^ anmineaftuell * 2o shown ·· divides, dl »old one

i 34 * -34 * In row «U« «t. SU "itsan in anordaunß In the same distance from each other on the crank & eh & ueewand 22. The Itognet 42 let on the 3ohwun $ rad enyetrraoht and bet St 1 ^ t the Sohalter 34 & -34d In a predetermined sequence In z« itlichor Abhtngi ^ lceit τοη the rotation of the crankshaft 12 "

For the person skilled in the art, he stands out for a number of modifications described carrion game "

909836/0428

Claims (3)

* 1 ^ 76301 claims 1. Ignition system for an internal combustion engine with stationary and movable, one crankshaft and one not mounted on the engine Spark plug comprising parts, (»ekennselehnet by a piezoelectric voltage source, which electrically bits the spark plug in Keihe gesohalten is operated τοη a moving part of the engine becomes and periodically in vain dependence on the Rotation of the crankshaft generates an electrical potential, furthermore magnetically responsive vacuum switching means, which in Roihe as long as the voltage source and the spark plug are switched, and a magnet placed close to the switchgear, which the switching means periodically in a lateral dependence of actuated the crank wool so that it wisohen the circle. nunjequelle and the ZÜndkerse close and open. 2. Ignition system according to claim 1, characterized in that the log Means are arranged on a fixed part of the motor and the magnet sitat and itself on a moving part of the motor moved with him λ 3. Ignition system according to claim 1, characterized in that the So holding means on a movable Toll of the motor · sitsen and move with it and that the magnet is on a stationary part of the engine is seated 4b ignition system according to claim 1, characterized in that the The switch and the magnet are both on a fixed part of the BAD ORIGINAL 909836/0 ^ 28 U76301 Motor are mounted so that Oino nagnetiache shielding ait magnetic window "wipe the Sohaltmitteln and arranged movably dom iet, ec that the magnetic flux dee DIW switching. ', Can actuate col, opposite taitteln don scarf wtnii dae window of the shield r At the end of the day, after saying 1, marked there! &% B the medium reed switches, the magnetically responsive reed contacts of which normally overlap the distance from each other. 6 _a ignition key according to claim 5, characterized in that a wide-range electrical circuit is connected in series with the switch, the ignition module and the voltage source. 7 · Zünieyeten for Bronnnngsaotoren Bit spark plug, marked by a capacitor for storing electrical energy at high Voltage fttr discharge ttbor the spark plug su beetimat times, ■ agnetiech appealing Vacuuiaachaltiaittel that «wipe the Capacitor and the Zundkerae are in Belhs, aur Zueanaonffekt Bit the sohaltaltteln arranged kneading and on one State of the motor responsive means that the switch periodieoh depending on the side, expose the motor to the magnetic field of the magnet. 8, electrical circuit sur Cr «« ufun ^ a ·· Vtmkaae, f »k« an «· is worthwhile through a spam range source, a magnetically responsive Xe« d-TaknanifoJbaltaT, which starts with A «r SpanmncB ^ a !! KtIlM He ₉ Tt ₁ elaee sur Suaaaenwlrkung with the equipment arranged in the holder, a spark plug connected in series with the voltage source and the switch and a movable connector made of high-voltage between the holder and the dna lagiaeten. · -11- 909836/0428 BATH ORIGINAL U76301 Material with an aagno-deep window is very low lity, since ο the passage de ο Ma '.; netfluacoe aur Bot & tijrumj doc Schaltors, if the window is aligned with this, is permitted. Electrical circuit according to claim β, characterized in that d & 8 the leedscnalter has magnetically appealing ltetdkantaJde, the normal wels la distance yon * lnanfttr, see aindastenji partially overlap, that "In Reedkont & kt eioh near · de" one pole of the magnate tmd another iteedtonts Opposing acts FoI dee Magneten is _t when the tenster eloh is in efl ective arrangement ana Sohalter ^ eflndat. 10th ignition tea for a multi-cylinder engine now £ aaotor with a fixed location and beweeliohen, a crankshaft nt rtr jadan cylinder one on dta engine on-mounted Zundkerso uafaa — ndan part, fakennseichnet through a pleaoelectrisohe SpanmaeaejMll ", dl · old every child mind In Velh · geeohe.ltet is, τοη «lnaa movable part that Motor is offered and periodically in side τοη represents rotation of the crankshaft «Generated in electrical potential, a plurality τοη magnetisolr appealing 8ohaltaltteln, the «Wisohea the Spannongaquelle and dan Stlndkaraen eloktrlsoh In Row lle ^ en ^ whereby the Änjpild Aar Schaltaittel da · Ireieee der Number of cylinders de · Hbtora antaprloht, and a la effect · - "Macnatea" arranged close to all so-holders periodically and close to one another all ages in mutual dependency tob der 'movement of the crankshaft batMlgt. 909836/0428 ÖAD OR | Q | _NAL Blank page