DE1252969B - Ignition light system with a magneto-electric machine - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

Number:
File number:
Registration date:
Display day:

F02p

H02k

German KL: 46c3-4

B 37326 VIII b / 46c3
September 27, 1955
October 26, 1967

The invention relates to an ignition-light system with a magneto-electric machine for supplying an ignition circuit and a lighting circuit of the installation containing an explosion engine, in which means are provided for the circuits to close and open alternately. It is an arrangement for the ignition and lighting of motor vehicles known, in which a magneto-electric machine is provided, which at the same time feeds the lighting circuit as well as a separate ignition transformer. The magneto-electric machine must be dimensioned here for a relatively large performance, since they supply both the lighting current and the ignition current when the interrupter contact is closed got to. The machine must be so generously dimensioned that even in this case the voltage is not drops significantly so that the required ignition voltage is achieved with certainty.

It is also known a lighting ignition system with a magneto-electric machine, in which the windings of the ignition transformer are arranged directly on the stator of the machine. at In this system, the ignition circuit and the lighting circuit are made from a single winding powered by the magneto-electric machine. In order to achieve the necessary ignition voltage with certainty, an additional breaker contact is provided here, which controls the lighting circuit switches off during the effective working phase of the ignition interrupter. With this arrangement there is but there is a risk of unintended sparks occurring on the spark plug. To reduce this risk, in the known system, the lighting circuit is only interrupted when the Ignition breaker is already closed. This results in strong load peaks for the magneto-electric Machine that has to supply both the lighting current and the ignition current at times.

The invention is based on the object of creating an ignition-light system in which the Generators can be made small, but still have a high level of security against the Occurrence of unintentional ignition sparks is given. This is achieved according to the invention in that the Ignition transformer provided in the ignition circuit as separate from the magneto-electric machine Component is executed and the primary side of the stator winding, which is on a as a conclusion for the core serving the force flux supplied by the permanent magnetic rotor is fed will. As with such an arrangement, the primary ignition light system

with a magneto-electric machine

Applicant:

The Bendix Corporation,
New York, NY (V. St. A.)

Representative:

Dr.-Ing. E. Maier, patent attorney,

Munich 22, Widenmayerstr. 4th

Named as inventor:
Glen Howard Dingman,
New York, NY (V. St. A.)

Claimed priority:
V. St. v. America September 28, 1954
(458 895)

winding of the ignition transformer no longer depends on the Maas generated by the rotor of the alternator can be enforced, unintentional ignition sparks can practically not appear. It is therefore possible to interrupt the lighting circuit before the ignition breaker has closed. This avoids high load peaks, and it can be with a relatively small sized magneto-electric machine with security the required ignition voltage reach.

The permanent magnet rotor of the magneto-electric machine can contain four magnetic poles, wherein the core receiving the stator winding has two pole pieces cooperating with the magnetic poles having. It can also have a second stator winding carrying a second stator winding that interacts with the rotor Core may be provided, the second stator winding preferably on a second light circuit connected.

The invention is explained in more detail below with reference to the drawing of some exemplary embodiments explained. In the drawing shows

F i g. 1 is a circuit diagram of an ignition-light system according to the invention,

F i g. 2 shows a circuit diagram of another embodiment of the system according to the invention and
F i g. 3 is a graphic representation of the current supplied by the ignition-light coil of the magneto-electric machine.

709 679/122

Claims (1)

3 4 The invention is illustrated as an exemplary embodiment in the when the interrupter 22, 23 is illustrated by cams 25 in the drawings and can be opened at this point in time A in the graphical representation in a combined ignition and lighting. A few degrees later, at B, the system for a single-cylinder explosion engine causes cam 30 to close the switch 28, 29. In the form shown, 5 contains while contacts 22, 23 remain open. The energy generated in the system of a magnetic generator 10 with a coil 15 is now passed through the 4-pole magnetic rotor 11 of known design and lamp filament 32 when the switch 31 is a pair of two-pole stands 12 and 14, which is closed. This continues until the contacts 28, arranged on opposite sides of the rotor 29, at time C (FIG. 3) are through the cam 30 and have primary windings 13 and 15, respectively. To be opened in io after the rotor 10 has traveled a three-fold manner during the rotation of the quarter turn. A few degrees of rotor 10 in each of the stator windings one later, at time D, when the current in the coil generates alternating current. 15 has decreased to about zero, the One end of the winding 15 is grounded at 16, while contacts 22, 23 close again. In the primary rend the other connected to parallel circuits 15 winding 18 then current flows until the circuit in the sen, one of which is the ignition circuit and the time point A is interrupted by opening the contacts another serves as a lighting circuit, with will and the cycle repeats itself. With normal the latter also has a stop light or any other operating speed the filament lights up The vehicle's lighting device continues to be included during the break in which the contacts 28 can. ao and 29 are open, and therefore causes a practical The ignition circuit of Fig. 1 comprises a steady light. Switch 17, one from the primary winding 18 and the energy generated in the coil 13 at the same time Secondary winding 19 existing transformer can be done in the same way as that of the winding coil, one between the secondary winding and earth 15 can be made usable, for. B. in the case of a two- at 21 switched spark plug and an interrupter 35 cylinder engine, but the energy can also be used in other with contacts 22, 23, which serve purposes between the primary windings. As shown in the drawing ment and earth are switched on at 24. The contact is made, the coil 13 is on via a switch 34 22 is fixed, while the contact 23 periodically pairs of lamp filaments 35 and connected in parallel is lifted off by a single-lobed cam 25, 36 is switched on, which in turn are grounded at 33, which sits on the same shaft as the rotor 10 and 30. with this circulates. The contact 23 can form through the tail lights for the vehicle. The coil 13 spring force inherent in or through arm 26 may be grounded at 37. a helical spring or some other type of spring in the embodiment according to FIG. 1 is the trans- In the closed position. A capacitor formatorspule 18,19 between the coil 15 and the 27 is preferably connected to the breaker contacts 35 breakers 22, 23, while the contact to reduce arcing. 22 is grounded. In certain systems it can As indicated by the shape of the cam 25, it is desirable to isolate both interrupter contacts to ground, the interrupter 22,23 only during one. In this case, the circuit of the small part of each revolution of the cam and the ignition circuit according to FIG. 2 can be made. Runner 10 closed. When the switch 17 is closed, current flows in the primary winding 18, breaker contact 23 ', while when the breaker 22,23 is in the closed position, contact 22' is connected to the primary winding 18 'is placed is located. When the interrupter is opened, a current inductively high voltage with the secondary winding 19 'is coupled in the secondary winding 19 and is grounded at 24'. The spark plug 20 induces an ignition spark between the electrodes 45 in the circuit with the winding 19 '.
Troden the spark plug 20 forms. Although only two embodiments of the invention During the breaks in which the contacts 22, 23 are illustrated in the drawings, is are separated, the one generated in the winding 15 is expressly emphasized that the invention is not Energy to a circuit for feeding one is limited to this. For example, the Stop light or another electrical ignition switch 17 instead of in series in the ignition circuit user derived. As if to be switched from the drawing, in a leading to earth can be seen, the circuit in series contains parallel circuit to be arranged around the ignition lines Switch with a fixed contact 28 and generator to make ineffective. If so desired a spring-loaded contact 29, which can have the effect of either or both cams 25 and is opened by a single-lobed cam 30 so 55 30 are reversed, d. i.e., the cams can do this such as a switch 31, a lamp filament 32 and designed so that the spring force in open one Ground at 33. The cam 30 can be closed on the held contacts. Rotor shaft 10 be attached and with this the generator rotor can, if desired, more than rotate; the same is to have four poles with respect to the cam 25, in which case a current half is arranged, that they open the contacts 28 and 29 during each rotor revolution for ignition holds when the contacts 22 and 23 are used and the remaining half-waves for light closures are and vice versa. energy are available. The mutual control of switches 22, 23 and 28, 29 is best shown in FIG. 3 illustrates wherein claims: the wave-like current for two complete perio- 65 1. Ignition-light-system with a magnet-electric the, d. H. for two revolutions of the rotor 10 and see machine for supplying an ignition current so that two revolutions of each of the cams 25 and circle and a lighting circuit of the one Ex- 30 is shown. The spark plug 20 ignites every time, plosion engine containing system, in the Means are provided to alternately close and open the circuits, thereby characterized in that the ignition transformer provided in the ignition circuit is separate from the magneto-electric machine Component is executed and on the primary side of the stator winding, which is on a back yoke arranged for the power flux supplied by the permanent magnet rotor serving core is fed. 2. Plant according to claim 1, characterized in that the permanent magnetic rotor Contains four magnetic poles and the core accommodating the stator winding two with the magnetic poles having cooperating pole pieces. 3. Plant according to claim 1, characterized in that a second, a second stator winding carrying, cooperating with the rotor core is provided and that the second stator winding is preferably connected to a second light circuit. Considered publications:
German patent specifications No. 395 466, 685 110. 1 sheet of drawings 709 679/122 10.67 © Bundesdruckerei Berlin