摘要:
An ignition-engine system for internal combustion engines having two-valves [46, 47] in the cylinder head and an Optimized Coil [9] per plug [20], the optimized coil being a small coil of peak primary current Ip of approximately 20 amps, spark current Is of approximately 350 ma, spark energy Ep is about 160 mJ, a secondary turns Ns to primary turns Np ratio, where Nt=Ns/Np, is approximately 50, and a primary turns Np is approximately 90, and two biasing magnets at the open end of the coil of an open-E coil which are optimized and disclosed to produce the highest ignition coil energy density.
摘要:
An ignition coil for an internal combustion engine includes a core assembly. The core assembly has a magnetically active core made of sheet-metal strips, a damping element and a sheath surrounding the core and the damping element. Different ways are described for improving the discharge of air trapped in the core assembly during casting of the ignition coil. For example, the damping element is designed with a V-shaped incision or a semipermeable diaphragm.
摘要:
A high-strength ignition coil that can prevent distortion arising from pin marks formed on a surface of a core and makes it less likely for insulating resin to be cracked. The coil assembly is housed in a coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. The coil assembly is comprised of a coil pair including a cylindrical primary coil and a secondary coil disposed concentrically with the primary coil, and a core. The core is fitted into a central space of the coil pair and forms a magnetic path. The core is coated with mold resin. Concave portions of pin marks formed on a mold resin coating by removal of core fixing pins when the mold resin coating is formed are filled with mold resin.
摘要:
The ignition coil includes an exciting core having a substantially I-shape, and a closed magnetic path forming core having a substantially C-shape. The ignition coil is constructed in such a manner that first contact faces are formed by a first face of the exciting core and a first face of the closed magnetic path forming core, and a permanent magnet is arranged between these first contact faces, while second contact faces are formed by a second face of the exciting core which is directed to a different direction from the aforesaid first face and a second face of the closed magnetic path forming core which is directed to a different direction from the aforesaid first face.
摘要:
To improve an anti-heat shock performance and an electric field concentration relaxation (an insulation performance) between a secondary coil and a center core, to attain a narrow diameter structure in an individual ignition type ignition coil and further to improve an assembling working of the ignition coil. The individual ignition type ignition coil is adopted to an engine having a plastic head cover. A secondary coil 3 is positioned at an inner side of a primary coil 5 and between a secondary bobbin 2 and a center core 1 a soft epoxy resin 17 is filled up. In the secondary bobbin 2, a secondary coil low voltage side is a potting side of the soft epoxy resin 17 and an inclination having a difference in an inner diameter is provided on the inner diameter in which the secondary coil low voltage side is formed large and secondary coil high voltage side is formed small. In the secondary bobbin, a thickness in the secondary coil low voltage side is formed thin and a thickness in the secondary coil high voltage side is formed thick. The soft epoxy resin 17 has a dent 17′ according to a compression molding and has a glass transition point Tg which satisfies a condition of [an allowable stress of the secondary bobbin > a generation stress at (from −40° C. to a glass transition point of an insulation resin)]. The secondary bobbin is formed by PPS and the primary bobbin is set to the primary coil at outer side of the secondary assembling body and under an assembling condition the winding is carried out.
摘要:
An individual ignition type ignition coil is adopted to an engine having a plastic head cover. A secondary coil is positioned at an inner side of a primary coil and between a secondary bobbin and a center core a soft epoxy resin is filled up. The soft epoxy resin hash a dent according t a compression molding and has a glass transition point Tg which satisfies a specified condition. The secondary bobbin is formed by PPS and the primary bobbin is set to the primary coli at outer side of the secondary assembling body and under an assembling condition the winding is carried out.
摘要:
Provided is an ignition coil device for an internal combustion engine, the device including: a plurality of side electrical steel cores which surround a primary coil and a secondary coil, and are divided at a division portion formed at a portion opposing the secondary coil; elastomeric materials respectively covering around the plurality of divided side electrical steel cores; and an insulating case housing the center electrical steel core, the primary coil, the secondary coil, the side electrical steel cores, and the elastomeric materials, and including an insulating resin injected and cured in an internal space thereof, wherein positions of secondary coil-side corner portions of division end portions which are end portions of the side electrical steel cores and the elastomeric materials on the division portion side are set to be different, in an axial direction of the secondary coil, from positions at which flanges of the secondary bobbin are disposed.
摘要:
In a spark plug ignition assembly for a spark plug, an ignition coil assembly has a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding. A spark plug connecting member is provided for connecting the coil assembly to the spark plug. At least one of the first and second core portions has a slot therein with a magnet located in the slot.
摘要:
An ignition coil includes a central core, a primary winding, a spool, a secondary winding, and a case outward of the core, spool, primary winding, and secondary winding. The secondary winding is wound on the spool and includes a high voltage end. The ignition coil also includes a cup formed of a metal material in electrical communication with the high voltage end of the secondary winding and is configured to be contacted by a conductive connector that is suitable for connection to a spark plug. The cup includes a generally cylindrical first sidewall press fit with the case and defining a press fit area at the interface of the first sidewall and the case, a generally cylindrical second sidewall spaced radially from the first sidewall, and an annular space defined between the press fit area and the second sidewall.
摘要:
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.