Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
  • F02P3/00—Other installations
  • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
  • H01F38/12—Ignition, e.g. for IC engines

Definitions

• the present invention relates to an ignition coil for an internal combustion engine with a reduced number of components.
• an ignition coil which has a suppression element for damping the electrical interference energy which occurs during ignition of the spark plug.
• the suppression element is designed as an inductance in the axial direction of the ignition coil and is at least partially formed from the winding wire.
• this known ignition coil is suitable only for pencil ignition coils and not for Kompaktzündspulen.
• a Wckelagging the so-called cold side, and a winding end, the so-called hot side, each connected to a Anbindepfosten made of metal and welded by means of a ferrule.
• an additional contact plate is needed for the production of a high voltage contact between the Anbindepfosten at the coil end and a suppression resistor.
• the ignition coil according to the invention for an internal combustion engine with the
• thermo-mechanical stresses in the ignition coil can be reduced. This has a positive effect on the service life of the ignition coil.
• the ignition coil a bobbin with a first Cylinder section and a second cylinder section has.
• the ignition coil comprises a winding, wherein a first Wckel Silver on the first cylinder portion and a second winding portion on the second
• Cylinder section is wound. Between the two cylinder sections, a winding-free intermediate section is provided.
• Cylinder sections are formed such that they each have a continuous cylinder jacket surface. Further, a slit-like channel is provided, which from the intermediate portion of an inner side of the second
• the slot-like channel is arranged parallel to a center axis of the ignition coil. As a result, a short connection is obtained from the center of the ignition coil to an axial outside.
• the high voltage outlet is preferably centered on
• the high voltage output is made integral with the ignition coil and projects in a pin-like manner from an outer periphery of the bobbin.
• Winding wire on a Anbindepfosten, a wire end ferrule and an additional separate high voltage contact part can be omitted.
• the central arrangement of the high voltage outlet is particularly suitable for Kompaktzündspulen.
• the high voltage output is designed as a suppression element, in which the winding wire from the last coil chamber for
• High voltage output is wound around.
• a high-voltage outlet with integrated suppressor element can be integrally formed on the bobbin.
• the same cylinder sections also have a same diameter.
• the first winding region and the second Wckel Scheme form a secondary winding of the ignition coil.
• the first cylinder section comprises a first outer wall region, which has a recess for the passage of the winding wire from a contact element.
• the first outer wall region prevents slippage of the winding from the bobbin. Particularly preferred is the
• the first cylinder portion further comprises a first inner wall portion which is disposed adjacent to the windingless intermediate portion.
• a radially outwardly projecting nose is provided, wherein the winding wire is guided around the nose and is guided over the intermediate portion to the second cylinder portion.
• the projecting nose thus enables a secure guidance of the winding wire during the winding process and avoids an undesirable
• the projecting nose is arranged offset in the circumferential direction to the slot-like channel.
• the offset of the projecting nose is such that the protruding nose begins in the circumferential direction at a height on which a
• Wall of the slot-like canal lies. This ensures that at a Lead around the winding wire around the protruding nose of the winding wire also abuts an edge of the slot-like channel to the intermediate portion and thus undesirable slipping of the winding wire can be avoided.
• Outlet region on the slot-like channel provided an undercut, through which the Wckeldraht is then guided into the second cylinder section. This also avoids undesirable slipping of the Wckeldrahts.
• Figure 1 is a schematic radial side view of an ignition coil
• FIG. 2 shows an axial side view of the ignition coil of FIG. 1,
• FIG. 3 is a perspective view of the ignition coil of FIG. 1;
• Figure 4 is a radial side view of the ignition coil, wherein the guidance of the Wckeldrahts is illustrated in the ignition coil, and
• Figure 5 is a radial side view of the ignition coil with wound
• the ignition coil has a bobbin 2 and a Wcklung of a
• the bobbin 2 has a first Cylinder portion 21, on which the first winding portion 61 is wound, and a second cylinder portion 22, on which the second winding portion 62 is wound, and an intermediate portion 23.
• the intermediate portion 23 is disposed between the first and second cylinder portion 21, 22 and has no winding on.
• the bobbin 2 comprises three main areas, namely the first one
• the first and second cylinder sections 21, 22 each have according to the embodiment in the axial direction X-X of the bobbin
• the intermediate portion 23 is significantly shorter in the axial direction.
• the two cylinder sections 21, 22 also have the same diameter.
• the first cylinder portion 21 has a length L1 in the axial direction which is the same length as a length L2 of the second cylinder portion 22 in the axial direction. In this way, a symmetrical bobbin structure can be achieved and the two Wckel Silvere on the first and second cylinder section 21, 22 are formed the same size.
• a first outer wall portion 24 and a first inner wall portion 25 are further formed, which is a continuous
• the second cylinder portion 22 includes a second outer wall portion 26 and a second inner wall portion 27, which is also a continuous one
• Limit cylinder jacket surface 22a and form a second receptacle for the second winding portion 62 of Wcklung.
• the winding is, for example, a secondary winding.
• a channel 4 is formed, which extends from the intermediate portion 23 to the axial outside of the second cylinder portion 22.
• the channel 4 is arranged parallel to the central axis X-X of the bobbin 2.
• the channel 4 can also obliquely to the central axis X-X of the
• the channel 4 serves to guide a winding wire 6 of the winding under the second Wckel Suite 62 of Wcklung.
• a further cylinder section is arranged, which is connected in one piece with the cylinder sections 21, 22 of the bobbin 2 via webs extending in the radial direction. In the radial direction between the cylinder sections 21, 22 and the further cylinder section, a distance is provided.
• Cylinder sections 21, 22 and the further cylinder section are arranged concentrically, for example.
• a further winding for example a primary winding, is arranged on the further cylinder section.
• the channel 4 is designed, for example, as a slot extending in the bobbin 2 from the intermediate portion 23 to the axial outside of the second cylinder portion 22.
• the slot 4 also passes through the second inner wall portion 27, whereby this slit at one point
• the slot 4 extends in the radial direction through the material of the cylinder portion 22 completely therethrough.
• the slot 4 has in the region of the intermediate portion 23 extending in the circumferential direction undercut, whereby the Wckeldraht can create outside the slot 4 to the Wckel Scheme 62 facing away from the inner wall of the bobbin 2.
• Bobbin 2 a receptacle 3 for a contact element and a
• High voltage outlet 5 arranged.
• the high voltage outlet 5 is on
• Spool 2 executed in the intermediate portion 23, which corresponds for example to the center of the bobbin 2.
• Figure 4 shows schematically how the Wckeldraht 6 is guided on the bobbin 2, to the bobbin 2, a first Wckel Trial 61 and a second
• Cylinder section 21 out and wound there along a first continuous cylinder jacket surface 21 a to the first inner wall portion 25.
• a radially projecting nose 7 is provided, wherein the winding wire 6 is guided around the nose 7 around and is guided transversely to the intermediate region 23 in the slot-like channel 4.
• the Wckeldraht 6 is located at an edge 10, which at the mouth of the
• the winding wire 6 is then guided in the axial direction along the channel 4 and guided at the outlet of the channel 4 from the second cylinder portion 22 via an undercut 8 on the second outer wall portion 26 to the second cylinder portion 22.
• the undercut 8 may also be a projecting post or a protruding nose.
• an ignition coil 1 can be provided in which a primary winding on the further cylinder section and a secondary winding on the cylinder sections 21, 22 are provided.
• the two cylinder sections 21, 22 are formed with Zylinder vommänteln 21 a, 22 a, which can be made particularly simple and which simplify a Wcklung the ignition coil. Furthermore, the two cylinder sections 21, 22 are formed with Zylinder vommänteln 21 a, 22 a, which can be made particularly simple and which simplify a Wcklung the ignition coil. Furthermore, the two cylinder sections 21, 22 are formed with Zylinder vommänteln 21 a, 22 a, which can be made particularly simple and which simplify a Wcklung the ignition coil. Furthermore, the
• the hot winding outlet is located in the middle of the ignition coil.
• a uniform heat distribution at the ignition coil can be obtained.
• the two Wcklungs Schemee 61, 62 are each wound from outside to inside.
• the radially projecting nose 7 is arranged offset in the circumferential direction to the slot-like channel 4. The protruding nose 7 begins in
• the ignition coil according to the invention is particularly preferably suitable for compact ignition coils.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Ignition Installations For Internal Combustion Engines (AREA)

Priority Applications (2)

Applications Claiming Priority (4)

Publications (1)

Family

ID=45999085

Family Applications (1)

Country Status (4)

Citations (7)

Family Cites Families (2)

• 2011
  • 2011-09-26 DE DE201110083442 patent/DE102011083442A1/de not_active Withdrawn
  • 2011-10-27 BR BR112013011396A patent/BR112013011396A2/pt not_active IP Right Cessation
  • 2011-10-27 CN CN201180054426.XA patent/CN103201802B/zh not_active Expired - Fee Related
  • 2011-10-27 WO PCT/EP2011/068914 patent/WO2012062601A1/de active Application Filing

Patent Citations (7)

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