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1. (WO1992010672) ENGINE IGNITION SYSTEM INCLUDING A TRANSFORMER ASSEMBLY AND POSITIONING MEANS THEREFOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010672 International Application No.: PCT/US1991/001114
Publication Date: 25.06.1992 International Filing Date: 25.02.1991
IPC:
F02F 1/24 (2006.01) ,F02P 13/00 (2006.01) ,H01F 38/12 (2006.01) ,H01T 13/44 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
1
Cylinders; Cylinder heads
24
Cylinder heads
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
P
IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
13
Sparking plugs structurally combined with other parts of internal-combustion engines
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
38
Adaptations of transformers or inductances for specific applications or functions
12
Ignition, e.g. for IC engines
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
T
SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
13
Sparking plugs
40
structurally combined with other devices
44
with transformers, e.g. for high-frequency ignition
Applicants:
CATERPILLAR INC. [US/US]; 100 Northeast Adams Street Peoria, IL 61629-6490, US
Inventors:
BRUNING, E. Eugene; US
RICHARDSON, Ronald, D.; US
Agent:
RHOADS, Kenneth, A. ; Caterpillar Inc. 100 Northeast Adams Street Peoria, IL 61629-6490, US
Priority Data:
624,84110.12.1990US
Title (EN) ENGINE IGNITION SYSTEM INCLUDING A TRANSFORMER ASSEMBLY AND POSITIONING MEANS THEREFOR
(FR) SYSTEME D'ALLUMAGE POUR MOTEUR COMPRENANT UN DISPOSITIF TRANSFORMATEUR ET UN SYSTEME DE POSITIONNEMENT ASSOCIE
Abstract:
(EN) 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 (8) including a transformer assembly (10) having an elongate body (68) including a cup portion (70) containing the coils (82, 84), a base portion (72), and a stem portion (74). A conducting core (96) extends through the stem and base portions and a suitable clip (116) connects the core electrically to a spark plug (30) installed in a profiled bore (28) of the cylinder head (24). A position device (130) is provided to positively align and contain the transformer assembly (10) within a valve mechanism compartment (149) defined between the cover (148) and the cylinder head (24), and including a spring member (132) connected to the cup portion (70) and depending guide members (150) formed within the cover (148) that cooperate with each other.
(FR) Les systèmes d'allumage de l'art antérieur pour un moteur à plusieurs cylindres à allumage par étincelle sont trop complexes et ont fait appel à des câbles électriques extérieurs et à plusieurs transformateurs dont les bobines primaires et secondaires ont été placées à l'extérieur afin d'assurer une meilleure dissipation de la chaleur. Par conséquent, les dispositifs transformateurs et les ensembles de câbles sont endommagés par les techniciens lors des interventions sur le moteur. Le système d'allumage (8) du moteur de cette invention résoud ces problèmes. Il comprend un dispositif transformateur (10) présentant un élément allongé (68) comportant une partie cupuliforme (70) contenant les bobines (82, 84), une partie base (72) et une partie tige (74). Une partie centrale conductrice (96) s'étend dans les parties de tige et de base et une fixation approprié (116) relie électriquement la partie centrale à une bougie d'allumage (30) logée dans un orifice profilé (28) de la culasse (24). Un système de positionnement (130) est prévu pour aligner et loger convenablement le dispositif transformateur (10) dans un compartiment de mécanisme de soupape (149) formé entre le cache-culbuteur (148) et la culasse (24), ledit système de positionnement comprenant un ressort (132) relié à la partie cupuliforme (70) et des éléments de guides (150) formés dans le cache-culbuteur (148), qui coopèrent les uns avec les autres.
Designated States: AU, CA, JP
European Patent Office (BE, DE, FR, GB, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0514496JP3330933CA2069925AU1991075710