Internal-combustion engines – High tension ignition system – Having a specific ignition coil
Patent
1996-07-01
1997-12-02
Nelli, Raymond A.
Internal-combustion engines
High tension ignition system
Having a specific ignition coil
F02P 1100
Patent
active
056924836
ABSTRACT:
Two separate iron cores 31 and 32, forming a magnetic path, are engaged with both ends of a cylindrical coil body 12. Each iron core has upper and lower limbs disposed in parallel with each other. Cylindrical coil body 12 accommodates a primary coil 221 and a secondary coil 223 therein, and has a core-insertion hole 4 for receiving the iron cores 31 and 32. The upper limb of each iron core is inserted in core-insertion hole 4 while lower limb extends along an outer wall of cylindrical coil body 12, so that cylindrical coil body 12 is engaged with iron cores 31 and 32 by these upper and lower limbs clamping between an inside wall of core-insertion hole 4 and the outer wall of cylindrical coil body 12. Primary coil 221 has an outermost layer formed into a dense alignment winding layer at its end part and into a non-dense alignment winding layer at its middle part. A connector la is integrally formed with a coil casing 1 of coil body 12, so as to extend in a direction perpendicular to an insertion direction of an ignitor 211 and closely to an opening portion of an ignitor housing 213 formed in coil casing 1.
REFERENCES:
patent: 3209295 (1965-09-01), Baermann
patent: 4120277 (1978-10-01), Ehlan
patent: 4446842 (1984-05-01), Iwasaki
patent: 4509495 (1985-04-01), Betz et al.
patent: 4546753 (1985-10-01), Pierret
patent: 4658799 (1987-04-01), Kusaka et al.
patent: 5003959 (1991-04-01), Umezaki et al.
patent: 5036827 (1991-08-01), Shimada et al.
"Automatic bobbinless coil winding machine No. 3000NC, NC-II; TAGA".
Inagaki Masahiro
Wada Jun-ichi
Yamamoto Akiyoshi
Nelli Raymond A.
Nippondenso Co. Ltd.
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