Патент USA US2408599код для вставки
Oct. 1, 1946. v L. L. BELTz > INTERNÀL-COMBUSTION 2,408,598 ENGINE Filed June 2, 1944 «By Patented Oct. 1, 1946 2,408,598 STATE s ' `UNITED PATENT oFFlcE 2,408,598 Y IN TERNALÁ COMBUSTION ENGINE Lester L. Beltz, Detroit, Mich„ assignor to Pack ard. Motor Car» Company. Detroit, Mich., a cor poration of Michigan Application June 2, 1944, Serial No. 538,376 6 claims. ' (c1. 12s-_179) 2 This invention relates to internal combustion engines, and more particularly to electric start circuit in which wire I9 is connected to terminal ing and ingition systems for engines. wire 22 is connected to terminal 23 on the elec tric motor and to switch contact 24. The circuit . v In starting internal combustion engines equipped with a magneto and distributor for sup plying current-,to the spark plugs, the engine is turning so slowly that the current development is 20 of the battery gand to contact 2|. Another also includesa switch 25 movable to engage the switch contacts 2l and 24 or to be spaced there from by4 a spring 2B bearing against a stationary part of the engine 21. unsatisfactory to ignite the engine fuel charges Switch 25 is automatically closed by solenoid28 and an auxiliary booster system isxoften utilized for supplying stronger current to> the distributor. 10 arranged in a circuit leading to the storage bat tery. This circuit comprises a wire 29 connected Such booster systems are connected with a stor with terminals 30 and 3|, a wire 32 connected age battery and-arev controlled to function con with terminal 3| and switch contact 33, and a currently-,with the electric system between the bat wire 34 connected with switch contact 35 and tory> and the starter motor. The booster circuit the battery terminal 2t.' This circuit is controlled includes a grounded booster coil connected with by switch member 36 that is manually operated an electrode that trails the distributor electrode to be engaged with or spaced from switch con in a path engaging distributor contacts connected with thespark plugs. , tacts'33., 35,. ' ' Y ' When the main control switch 36 is closed, When such a sparking system is employed with solenoid 2-8 is energized moving switch 25 to en engines used as Aa power plant for airplanes, gage contacts 2I' and 24, thus completing the cir trouble is encountered` in rareiied atmosphere due cuit from the battery to the electric starter mo to the dielectric of the air breaking clown. When The motor will drive the flywheel I 3y through ’ tor. such break down occurs, current from the maefnv gear I1 that is moved to mesh with the ring neto jumps to the booster electrode and the mag neto will be grounded through the booster coil 25 gear I8. When the switch 36 is open, thev electric circuit to the starter motor is broken` and the thus seriously interfering with or cutting ou starter *gear* I1 is disengaged from the flywheel. engine ignition. ' ' The electric ignition system includes magneto An object of the invention is to provide an ig 40, distributor 4I and spark plugs 42. The mag nition system, of the type referred to, in which the possibility of shorting the magneto through the 30 neto rotor and the distributor rotor 31 are ro tated by shaft 43 carrying gear 44 driven by gear booster system is eliminated. ' » 45 that is operated by the usual mechanism driven Another object of the invention is to provide a control for an ignition booster system, of the ' by the' engine crankshaft. The distributor cas ing carries-spaced contacts 46 connected .by wires type referred to, so that the circuit between the grounded booster coi-l and electrode is made or 35 41' with the spark plugs. The distributor rotor y31-has a’contact 48 .from which electrode 49 eX broken concurrently with the electric circuit of tends so that it will pass adjacent contacts 46 an engine starter motor. during its Arotation and current is supplied to con Other objects of the invention willappear from tact 48 from the magneto. the following description taken in connection An ignition booster system is provided and its with the drawing, which forms a part of this 40 circuit includes a controlled portion of the sole speciñcation, and in which: noid circuit and a grounded booster coil 50. The Fig. 1 is a wiring diagram of an ignition and grounded booster coil has a terminal 5I that is starting system shown applied to a fragmentary connected by wire 52 with terminal 3l and the elevational View of an engine; ` Fig. 2 is a sectional view through the distrib 45 coil may be connected with terminal 53 on the distributor which in turn is connected by wiring utor in the ignition system. 55 and- 56 to a booster electrode 54 secured to In the drawing, a conventional engine I Il is the rotor 31 of the distributor. This booster elec illustrated as having a head portion I I, four cyl trode is arranged so that it rotates adjacent con inders I2, ñywheel I3 and a shelf portion I4. tacts 46 and trails electrode 49 approximately the A conventional electric starter system is pro distance between two of the contacts 46. , vided to turn the ñywheel, and such system in If the grounded booster coil is wired directly cludes an electric motor I5 for rotating a shaft to the booster electrode, current from the main I6 carrying gear I1 adapted to mesh wtih ring ignition electrode 49 will jump to the booster elec gear I 8 on the flywheel. The electric starter mo trede so that the magneto will ‘be grounded tor is connected with the storage battery I8 by a f i 2,408,598 ' 4 3 through the coil when an altitude is reached where the dielectric of the air breaks down. In order -to prevent such grounding of the magneto in rareñed atmosphere and maintain engine igni tion. I provide a control means, in the form of a switch 51, in the booster circuit between the electrode for engaging the distributor contacts, said booster electrode rotating with and trailing the distributor electrode, of switch means in the booster circuit between the coil and the elec trode, and means for automatically opening said switch means when the engine is operating un grounded booster «coil and the terminal 53~ of the distributor. Switch con-tact 58 is connected to der its own power. the booster coil terminal 59 by Wire 60 and switch contact 6| is connected to terminal 53 lby Wire 62.r magneto and a distributor in which an electrode is rotated by the engine and engages contacts This switch 5l could be manually operated but to complete circuits from the magneto to the _ _ y, 3. In an electric sparking system having a spark plugs, the combination with a booster cir I prefer to operate it automatically and concur cuit having a grounded booster coil and a booster rently with the main control switch 3E. Switch >electrode for engaging the distributor contacts, 57 is urged away from contacts 5B and 5l by a said booster electrode rotating with and trailing spring 63 bearing against a stationary portion the distributor electrode, of normally open switch 64 of the engine and a solenoid 65 is utilized to .means in the booster circuit between the coil and close lthe switch when energized. The. solenoid the electrode, and means for closing said switch is connected with the booster circuit and the cir means while cranking the engine for starting. cuit for starter switch solenoid 28 by wire 66 at fl. In an electric sparking system having a tached to terminals 3l and 6l. Because of this 20 magneto and a, distributor in which an electrode control arrangement of solenoid 65, switch 5'! is rotated by the engine and engages contacts to will be moved to establish the booster circuit complete circuits from the magneto to spark concurrently with closing of the circuit for sole plugs, the combination with a booster circuit noid 28 by means of the main control switch 3S. Thus, solenoid actuated switches 25 and 51 will 25 having a grounded booster coil and a booster electrode for engaging the distributor contacts, operate similarly and -concurrently under control said booster electrode rotating with and trail of switch 35. Whenever switch 36 is open, the ing the distributor electrode, of switch means in circuit between IJthe booster coil 50 and the dis the booster circuit between the coil vand the elec tributor is broken by spring 63 opening switch 51 and consequently the magneto can not be so trode, and a solenoid for controlling said switch means. f grounded through the booster coil when the 5.~ In an engine having an electric starter motor booster circuit is broken. It will thus be seen system, a, magneto and distributor ignition sys that the main ignition system can not be inter tem and a booster ignition system including a rupted by grounding through the booster sys grounded coil connected with the distributor igni tem during engine operation in rarefied atmos tion system, control means 'comprising switch phere. means in the starter system, switch means in the It will be understood that various forms of `booster system between the coil and the dis the invention other than that described above tributor ignition system, solenoids for operating may be used without departing from the spirit or scope of the invention. 40 both switch means when energized, electric cir cuits for the solenoids having a, portion in com What is claimed is: mon, and a main control switch in said portion l. In an electric sparking system having a is rotated by the engine and engages contacts to of the circuits. 6. In an engine having an electric starter mo magneto and a distributor in which an electrode complete circuits from the magneto to spark tor, a magneto and distributor ignition system plugs, the combination 'with a booster circuit hav ing a, grounded booster coil and a booster elec and a, booster ignition system including a coil trode for engaging the distributor contacts, said ‘booster electrode rotating with and trailing the control means comprising an electric circuit for the starter motor lhaving a switch therein, an electric circuit for the booster system having a grounded coil, an electrode and a switch between the coil and the electrode, solenoids for oper distributor electrode, of switch means in the booster circuit between the coil and the elec trode. 2. In an electric sparking system having 1a magneto and a distributor in which an electrode is rotated by the engine and enga-ges contacts to complete circuits from the magneto to the spark plugs, the combination with a booster cir cuit having a grounded booster coil and a booster connected with the distributor ignition system, ating said switches, electric circuits for the sole noids, said solenoid circuits and said booster cir cuit each having a portion in-common, anda main control switch in said common portion of the circuits. LESTER L. BEL'I‘Z.