US2297510A - Electromagnetic ignition device, particularly for internal combustion engines - Google Patents

Electromagnetic ignition device, particularly for internal combustion engines Download PDF

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Publication number
US2297510A
US2297510A US353865A US35386540A US2297510A US 2297510 A US2297510 A US 2297510A US 353865 A US353865 A US 353865A US 35386540 A US35386540 A US 35386540A US 2297510 A US2297510 A US 2297510A
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US
United States
Prior art keywords
permanent magnet
ignition device
ignition
internal combustion
combustion engines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US353865A
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English (en)
Inventor
Torriani Luigi
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US2297510A publication Critical patent/US2297510A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/26—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets
    • H02K21/28—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets with armatures rotating within the magnets

Definitions

  • Ignition devices are already known according to the following features: the primary and secondary windings forming their ignition coils are arranged coaxially on the driving shaft and their armature portion is so constructed that the total magnetic flux passes at the same'time through the ignition coil.
  • the object of the present invention is to provide an electro-magnetic ignition device, in which the above inconveniences are prevented, notwithstanding the form of the device being perfectly cylindrical.
  • Such device includes an ignition coil, the primary and secondary windings which form the ignition coil being vertically arranged on the vertical driving shaft of the device.
  • windings are wound on the vertical magnetic core, with pole pieces so arranged as to cooperate with a permanent magnet in the form of a fixed ring.
  • Th annexed drawing shows, by way of example only and not as a limitation, one embodiment of the present invention.
  • Fig. 1 is a vertical sectional view of an embodiment of the permanent magnet in the form of a fixed ring;
  • Fig. 2 shows the assembly of the permanent I magnet according to Fig. 1;
  • Fig. 3 is a sectional view of the complete ignition device
  • Fig. 4 shows the assembly of the rotary armature
  • Fig. 5 shows an embodiment of the distributing brush forminga protection for the rotary armature of Fig. 4.
  • the vertical permanent magnet consists of 3 sections, I being the top pole piece, 2 the fixed permanent magnet and l the bottom pole piece (see Figs. 1 and 2).
  • FIG. 1 in the form of a ring (Fig. 1) there are indicated the two pole pieces I and 3 and twosynoidal arrows showing the magnetic circuit. N and S indicate north and south polarities.
  • 8 indicates the distribution cover; I! is the high voltage distributing rotary brush; I is the base of the rotary switch device; 9 is the adjustable fixed cam ring for controlling the low voltage rupture of the rotary switch fixed on the base I; 5 indicates the-condenser fixed on the base I; I is the top pole piece fixed on the permanent magnet 2, 3 is the second pole piece fixed on the bottom of the permanent magnet 2.
  • I3 is the base integral with the driving shaft I5 and joint I6.
  • I 4 indicates the extension for the mounting on'the engine.
  • 24 is the core of the coil which, when assembled, is integral with the vertical driving shaft I5, the latter being integral with the base I3.
  • the base of the switch device I is arranged in the upper section integral with the journal 6 (Fig. 3).
  • I'I-IQ Figs. 4 and 5 indicate the distributing brush made of insulating material; said brush is madein a single piece in the form of a solid bush to protect the armature coil 2!, enclosed between the top and bottom pole pieces I and 3 provided on the rotor as shown by Fig. 4.
  • the ignition device has many important advantages in comparison to other known apparatuses havin the same application.
  • the body of the-apparatus is formed by the perma- In the sectional view of the permanent magnet nent magnet 2, in the form of a stationary ring and the apparatus is protected all around against electro-magnetic actions.
  • the construction according to the present invention due to the arrangement or the fixed permanent magnet in the form of a ring, at the ends of which pieces I and 3 are mounted, allows for any distribution desired of the pole pieces.
  • the present ignition device is completely devoid of gears and can supply any desired number oi! sparks at each revolution, because it is known that this device, being mounted on the cam shaft of the engine, rotates at half the speed of the driving shaft.
  • the pole pieces of the rotary armature be also distributed in an odd number both inferiorly and superlorly.
  • the distributing brush according to the present invention is made in the form of a bush with an integral extension, this extension being provided to distribute the high voltage to the distribution cover, the brush serving also to thoroughly protect the armature.
  • the ignition distributing brushes of known apparatuses undergo considerable losses, as their insulating portions adhere to mechanical parts.
  • An ignition magneto comprising, an annular permanent magnet having a North polarity at one end and a South polarity at the other end,
  • An ignition magneto comprising, an annular permanent magnet having a North polarity at timer 'ronarsm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US353865A 1939-09-01 1940-08-23 Electromagnetic ignition device, particularly for internal combustion engines Expired - Lifetime US2297510A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT221400X 1939-09-01
IT866857X 1939-09-01
IT2297510X 1939-09-01

Publications (1)

Publication Number Publication Date
US2297510A true US2297510A (en) 1942-09-29

Family

ID=27273253

Family Applications (1)

Application Number Title Priority Date Filing Date
US353865A Expired - Lifetime US2297510A (en) 1939-09-01 1940-08-23 Electromagnetic ignition device, particularly for internal combustion engines

Country Status (2)

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US (1) US2297510A (fr)
CH (1) CH221400A (fr)

Also Published As

Publication number Publication date
CH221400A (fr) 1942-05-31

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