Internal-combustion engines – High tension ignition system – Specific coil location
Patent
1990-12-10
1991-10-29
Argenbright, Tony M.
Internal-combustion engines
High tension ignition system
Specific coil location
123169PA, F02P 1500
Patent
active
050606247
ABSTRACT:
Prior engine ignition systems for a multicylinder spark ignited engine have been too complex and have incorporated external wiring cables and a plurality of transformer assemblies that placed the individual primary and secondary coils thereof in an external location for better heat dissipation. Thus the cable and transformer assemblies were subject to damage by personnel working on the engine. These problems have been overcome by the engine ignition system including a transformer assembly having an elongate body including a cup portion containing the coils, a base portion, and a stem portion. A conducting core extends through the stem and base portions and a suitable clip connects the core electrically to a spark plug installed in a profiled bore of the cylinder head. A position device is provided to positively align and contain the transformer assembly within a valve mechanism compartment defined between the cover and the cylinder head, and including a spring member connected to the cup portion and depending guide members formed within the cover that cooperate with each other.
REFERENCES:
patent: 2686511 (1954-08-01), Platner
patent: 3792694 (1974-02-01), Brenholts
patent: 4706639 (1987-11-01), Boyer et al.
patent: 4715337 (1987-12-01), Bohl et al.
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patent: 4768477 (1988-09-01), Richardson
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Article by C. L. McClung, entitled, "Design and Development of the Caterpillar 3500 Series Spark-Ignited Engine Family" and published by the American Society of Mechanical Engineers, circa 1984.
Patent Abstracts of Japan, vol. 9, No. 46, Feb. 27, 1985.
Bruning E. Eugene
Richardson Ronald D.
Argenbright Tony M.
Caterpillar Inc.
Lanchentin, Jr. Charles E.
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