Ignition coil for an internal combustion engine

Details Ignition coil for an internal combustion engine Ignition coil for an internal combustion engine

1995-12-05

1998-07-14

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Having a specific ignition coil

336 58, 336 94, F02P 1300, H01F 2712

Patent

active

057788634

ABSTRACT:
To provide an ignition coil for an internal combustion engine which improves high-voltage sealing performance and moreover reduces housing outer diameter, an ignition coil for an internal combustion engine is made up of a transformer portion of cylindrical configuration housed within a housing chamber of a case, a control-circuit portion which is positioned on one end portion of this transformer portion and causes primary current of the transformer portion to be intermittent, and a connecting portion which is positioned on another end portion of the transformer portion and supplies secondary voltage of the transformer portion to a spark plug. The interior of the housing chamber is filled with insulating oil which has a flash point of 180.degree. C. or more, a total acid number of oxidation stability of 0.6 mgKOH/g or less, a pour point of -20.degree. C. or less with no cloudiness occurring before that temperature is reached, and a kinematic viscosity of not less than 20 cSt and not more than 180 cSt at 40.degree. C.

REFERENCES:
patent: 4033854 (1977-07-01), Ohmori et al.
patent: 4238343 (1980-12-01), Pellegrini, Jr.
patent: 4617907 (1986-10-01), Johansson et al.
patent: 4621881 (1986-11-01), Johansson et al.
patent: 4706638 (1987-11-01), Johansson et al.
patent: 5632259 (1997-05-01), Konda et al.

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