Abstract: A spark ignition internal-combustion engine, wherein an ignition coil is mounted on the engine, in the vicinity of a distributor fixedly mounted on the engine, and the ignition coil is disposed behind the opening section of a radiator fan. The engine is mounted in the front part of an automotive body, with a crankshaft directed in the direction of breadth of the automobile. The ignition coil is mounted on the front bank of the engine. Beside the ignition coil is disposed a battery and a reservoir tank; between the battery and reservoir tank and the front bank is formed an ignition coil cooling air duct. A mounting member for mounting the ignition coil to the engine is partially extended between the ignition coil and the distributor to cover the coil section of the ignition coil.

Abstract: A transformer assembly having an elongate body including a cup portion containing primary and secondary coils, a base portion, and a stem is adapted to be installed in a housing of a cylinder head. An electrical source extends through the stem and base portion. An electrical connecting system includes an electrical conductor adapted to receive the voltage source with a spring contacting the end of a spark plug terminal biasing the conductor in a director away from the spark plug in the installed position. The electrical connector system further includes a positioning device adapted to positive align and contain the transformer assembly within a valve mechanism compartment defined between a cover and the cylinder head. A spring member connected to the cup portion axially biases the electrical conductor in a direction toward the spring in contact with the spark plug terminal insuring an electrical connection.

Abstract: There is disclosed an ignition system for an internal combustion engine wherein insertion of a terminal (41) into a sleeve (55) from above a cap (51), with an upper portion of the sleeve (55) fitted in a sleeve receiving portion (51b) of the cap (51), causes a ledge (42) on an upper portion of the terminal (41) to advance beyond a ledge (53) of the cap (51) made of rubber into a position lower than the ledge (53), whereby an upper side of the ledge (42) engages the ledge (53) to prevent the upward movement of the terminal (41) and a lower side of the ledge (42) is locked to an upper end surface of the sleeve (55) to prevent the terminal (41) from slipping off downwardly, thereby completely positioning the terminal (41).

Abstract: A coil and spark plug assembly includes a substantially cylindrical tube housing the coil. The tube includes an element at a first end to transmit a low voltage power source to the coil, and an attachment device at a second end for attaching the tube to an engine. The tube further includes an internal device to house a terminal end of the spark plug and a high voltage connection for connecting the coil to the spark plug. The spark plug includes a firing end, a tower shaped insulator at the terminal end opposite the firing end, and a high voltage terminal recessed within the insulator. The terminal is constructed and arranged to make an electrical connection with the high voltage connector when the terminal end of the spark plug is inserted into the second end of the tube. The spark plug further includes a first surface formed around the spark plug, wherein the surface is constructed and arranged to match a mating surface formed on the engine, and a second surface formed around the spark plug.

Abstract: An engine assembly for powering a watercraft that has a front cover which contains a number of electrical components for the engine including the flywheel magneto of the engine, a CDI ignition system for firing the spark plugs and additional components. This permits ease of servicing and reduces the number and length of the interconnecting electrical conduits.

Abstract: The invention relates to a metal fixation insert for stiffening the fixation zone of a part of plastic material on a support. This metal fixation insert is made of rolled steel which is perforated.

Abstract: An ignition coil set for a multicylinder internal combustion engine has a housing and a plurality of substantially identical ignition modules each having a primary coil and a secondary coil accommodated in the housing. A common connecting element is formed so as to provide positioning of the primary coils and the secondary coils and electrical contacting of terminals of the primary coils and low voltage side of the secondary coils when the coils are single spark coils or distribution of high voltage when the coils are formed as double spark coils, and also positioning of the housing which accommodates the ignition modules.

Abstract: An ignition coil for an internal combustion engine has a housing composed of synthetic plastic material, at least one main core provided with a coaxial primary and secondary coils, a return flux core surrounding the main core, a dome extending from the housing and having a high voltage connection connected with the secondary coil and associated with a spark plug of an internal combustion engine. The main core and the return flux core are composed of a plurality of coated lamellas. The return flux coil is provided with recesses extending through the lamellas for passage of mounting means for the ignition coil, the recesses each being coated with a bushing. The bushings are formed as synthetic plastic injection molded parts which are connected of one-piece with a synthetic plastic jacket of the return flux core.

Abstract: An ignition system for an internal combustion engine, comprising: a tubular insulating member which has a through-hole;a tubular terminal which is mounted in an upper portion of the through-hole; an ignition coil which has a first terminal;the first terminal being fitted into an upper portion of the terminal so as to be electrically connected to the terminal; a coiled spring which is attached to a lower portion of the terminal and is loosely fitted into a lower portion of the through-hole; a spark plug which has a second terminal fitted into the through-hole from a lower portion of the insulating member; the second terminal being brought into contact with the coiled spring so as to be electrically connected to the coiled spring; and a buckling preventive portion for reducing an inside diameter of the through-hole, which is provided at a portion of the through-hole between the lower portion of the terminal and an upper portion of the second terminal so as to prevent buckling of an intermediate portion of the c

Abstract: An ignition coil device for an internal combustion engine comprising: a plurality of iron cores; a plurality of ignition coils having a plurality of primary coils provided around said plurality of iron cores and a plurality of secondary coils magnetically-coupled with said plurality of primary coils through the plurality of iron cores; a case accommodating the plurality of iron cores and the plurality of ignition coils; and a plurality of control units accommodated in said case of which number is equal to the number of the plurality of ignition coils.

Abstract: An ignition coil unit for an internal combustion engine for containing an ignition voltage detective capacitor for misfire discrimination, including a core, a primary and a secondary coil wound around the core, and a case housing the core and the primary and secondary coils which is filled with an insulative material. In this unit, a first conductive electrode plate is placed in the case and electrically connected with the output of the secondary coil, and a second conductive electrode plate is also placed in the case in parallel with the first conductive electrode plate while maintaining a predetermined distance therefrom. An insulator is interposed between the first and second conductive electrode plates forming a capacitor that uses the insulator as the dielectric.

Abstract: An arrangement for mounting an ignition coil on the cylinder head of internal combustion engines. Threaded bolts extend from the cylinder head. The thread having a substantially saw tooth cross section with the thread flank facing away from the cylinder head at an acute angle and the thread flank head oriented substantially normal to the axis of the bolt. The ignition coil, which for this purpose is provided with a bore, may be slipped onto the bolt and a fastener provided with a resiliently expansible locking member may thereafter be slipped onto the bolt.

Abstract: An ignition system for internal combustion engines, has a plurality of spark plugs, an ignition coil provided for the spark plugs and having a secondary circuit, at least one trigger diode cascade formed as a high voltage semiconductor switch and connected in the secondary circuit of the ignition coil prior to each of the spark plugs so as to change suddenly from a blocking state to a conducting state at a preselected voltage for generating ignition sparks, and a capacitor connected parallel to the secondary winding of the ignition coil between the ignition coil and the trigger diode cascade.

Abstract: An ignitor comprises an ignition coil unit mounted to a base and a control unit disposed on the ignition coil unit and electrically connected thereto for controlling a primary current to the ignition coil unit, which includes a base plate attached to the base and a crank angle sensor for detecting the turning angle of an engine crank shaft. The ignitor also comprises a rotary shaft rotatably supported by the base for rotation in synchronization with the rotation of an internal combustion engine which extends through the ignition coil unit and has a distributor rotor on an extended end thereof. The control unit further comprises a power switch package having a mold resin which hermetically molds therein a power transistor and an integrated controlling circuit into a sealed package. The power transistor interrupts an electric current flowing through a primary coil of the ignition coil and an integrated controlling circuit controls the power transistor.

Abstract: An ignition distributor has a hollow housing. A distributor cap having a caved portion that extends in the housing is mounted on one end of the housing. The other end of the housing supports a rotation shaft. An ignition coil is disposed in the caved portion of the distributor cap. A rotor electrode of a distributor section is connected to the shaft, and rotates around the caved portion of the distributor cap. Side electrodes are arranged to face the rotor electrode with its rotation. Thus, the space surrounding the ignition coil is fully utilized to arrange the distributor section. This results in a compact ignition distributor.

Abstract: An ignition system for a multi-valve internal combustion engine wherein the valves all reciprocate about acute angles to a plane containing the cylinder bore axis and wherein a spark plug is positioned in a generally parallel extending direction to the plane and is offset slightly toward the side of the plane containing the most valves. A spark coil is affixed to the terminal end of the spark plug and is itself offset to the other side of the plane to nest between the two poppet valves and provide a compact, low volume combustion chamber and a compact, low height engine arrangement.

Abstract: An ignition apparatus for an internal combustion engine includes a reduced number of component parts which can be arranged or laid out without difficulty within a limited space such as a vehicle engine room. The apparatus can be manufactured at low costs and it is also highly resistant to electrical noise from adjacent electrical and electronic elements and hence has improved reliability in operation. The apparatus includes an ignition coil connected to a spark plug which has electrodes present in a combustion chamber of a cylinder, a switch unit for controlling power supply to the ignition coil, and an ion current sensing unit connected to the spark plug for sensing an ion current generated between the electrodes of the spark plug during combustion of a mixture in the combustion chamber. The ignition coil and the switch unit, or the ion current sensing unit and the switch unit, or all of these elements, are integrally formed with each other to provide an integral assembly.

Abstract: An ignition system for a multi-valve internal combustion engine wherein the valves all reciprocate about acute angles to a plane containing the cylinder bore axis and wherein a spark plug is positioned in a generally parallel extending direction to the plane and is offset slightly toward the side of the plane containing the most valves. A spark coil is affixed to the terminal end of the spark plug and is itself offset to the other side of the plane to nest between the two poppet valves and provide a compact, low volume combustion chamber and a compact, low height engine arrangement.

Abstract: An ignition coil unit which is capable of mounting in a relatively small space between opposed cylinder head covers of an internal combustion engine is disclosed, wherein a pair of separate coil assemblies received in a single insulating-resin case is firmly embedded in the case by a cured casting resin such as a thermosetting resin filled in the case in such a manner that the pair of coil assemblies can be directly connected to each pair of adjacent spark plugs provided one for each cylinder of the internal combustion engine.

Abstract: A method and assembly for installing a plurality of ignition coils (12) on an engine block. The invention includes molding a housing (1) from an electrically insulating material. The housing having a plurality of receptacles (4) for the coils and including inserts for attachment of the housing to the engine block. The coils are placed in receptacles with appropriate wiring, and the connections (23, 24) of the receptacles are connected to the primary and secondary windings of the coils. When all connections are made, an electrically insulating resin (25) is poured into the housing which embeds the coils and their cable connections. Finally, the housing is fixed on the engine block with the appropriate receptacle properly aligned with its respective sparkplug.

Abstract: An ignition apparatus for an internal combustion engine includes a reduced number of component parts which can be arranged or laid out without difficulty within a limited space such as a vehicle engine room. The apparatus can be manufactured at low costs and it is also highly resistant to electrical noise from adjacent electrical and electronic elements and hence has improved reliability in operation. The apparatus includes an ignition coil connected to a spark plug which has electrodes present in a combustion chamber of a cylinder, a switch unit for controlling power supply to the ignition coil, and an ion current sensing unit connected to the spark plug for sensing an ion current generated between the electrodes of the spark plug during combustion of a mixture in the combustion chamber. The ignition coil and the switch unit, or the ion current sensing unit and the switch unit, or all of these elements, are integrally formed with each other to provide an integral assembly.

Abstract: An ignition apparatus for an internal-combustion engine, comprises an ignition coil for generating a high-voltage electricity, a socket for supplying the high-voltage electricity to an electrode of a spark plug, and an electrically insulating resin support member which adheres to both of the ignition coil and the socket to support them integrally thereon, and at least a part of the socket is made of an electrically conductive resin.

Abstract: A method of making a unitary spark distribution cassette involves molding a cassette and placing electrically conductive lead frames within the cassette during molding. Electrically conductive sleeves for fitting over spark plugs are also provided on the cassette. An ignition system circuit using high voltage diodes in conjunction with an alternating flux ignition coil is placed in the cassette and connected to the lead frames and the sleeves to create a complete electrical circuit. The cassette is then filled with epoxy resin to encase the electrical components to form a unitary package.

Abstract: An ignition coil apparatus comprises a base plate 10 connectable at its one side to an engine rocker cover. The base plate has a plurality of plug towers 13 for supporting spark plugs 8 and a plurality of ignition coils 18 mounted on the opposite side between the spark plugs so that electrical conductors 19 between the ignition coils and the spark plugs may be short. A cover 21 may be placed on the base plate for covering the ignition coils and the conductors. The base plate, the plug towers, the ignition coils, the conductors and the cover are fastened together as a single ignition coil assembly detachably mounted to the engine as a unit. The rocker cover has plug openings 14 for receiving the spark plugs and a continuous water-proof seal rib 15 is formed on the rocker cover around the plug openings to encircle all of them together. A continuous rib-receiving seal groove 16 is disposed in correspondence with the seal rib to provide a water-tight seal between the rocker cover and the base plate.

Abstract: An internal combustion engine includes a cylinder head having a plug insertion hole, an ignition plug inserted in the plug insertion hole and having an input terminal covered with a plug cap. An ignition system includes an ignition coil assembly having a primary coil, a secondary coil, and a core extending through the primary and secondary coils, the ignition coil assembly being disposed in the plug cap. The ignition system also includes magnets mounted on respective ends of the core, the magnets being oriented so as to produce magnetic fluxes in a direction opposite to magnetic fluxes generated by the primary coil. The ignition system also has a shield member of a magnetic material surrounding the ignition coil assembly, and an insulating member of an electrically nonconductive material interposed between the shield member and an inner wall surface of the plug insertion hole.

Abstract: A distributor for an internal combustion engine comprising a base plate (20), a resin-molded ignition coil unit (21) and a resin-molded control unit (30) in a stacked relationship with their side circumferential surfaces exposed to define a portion of an outer surface of the distributor. A distributor cap (2), a cover (10) for covering the control unit are fastened to the base by a screw (32) extending through these components, and the ignition coil unit is attached to the base through a screw (24) extending through a bushing (23). The resin-molded ignition coil unit (21) may comprise an L-shaped external-connection connector (28, 37) integrally formed on the exposed side surface. The electrical connection between the ignition coil and the control unit may be established by a plug-in type connector (38, 39).

Abstract: The ignition unit includes a support housing containing two ignition coils each for the connection to at least one, and preferably two, associated spark plugs. Each ignition coil comprises a primary winding and a second winding disposed around the end arms of a magnetic core or circuit formed by only two packs of plates juxtaposed so that together they form essentially a figure-of-8 shape. The packs of plates are identical, essentially E-shaped and are placed close together, face-to-face, so that together they form a squared figure-of-8 shape. Each of the packs of plates has a notch which extends from the back of the E into its central arm and almost up to the end of the free end thereof. Conveniently, inserts of non-magnetic material are disposed in the notches in the packs of plates.

Abstract: A direct fire ignition system for an internal combustion engine having a coil assembly attachable to each spark plug. Each coil assembly has a high voltage transformer for producing a voltage sufficient to cause the spark plug to generate a spark, an integral capacitor parallel with the spark plug, and a spark plug sensor circuit coupling to the high voltage transformer for generating a spark confirmation signal when a spark is generated. The spark sensor circuit is responsive to a high frequency signal generated in the high voltage transformer within a predetermined frequency range to generate the spark confirmation signal. The direct fire ignition system is compatible with single strike or multi-strike modes of operation. The system can also generate a probe voltage across the spark plug to test for auto or pre-ignition.

Abstract: Apparatus for supplying high voltage to each spark plug of a multi-cylinder internal combustion engine via a spark coil includes a distributor plate of a unitary construction made of an electrically-insulative resin and having an integral base portion and an integral connector. A plurality of connecting lines are embedded in the base portion. One ends of the connecting lines are electrically connected respectively to spark coils whereas the other ends thereof extend to the connector. The distributor plate and the spark coils can be fixed, as a unit, to the internal combustion engine by a bracket of metal.

Abstract: A distributor comprising a rotor electrode, a plurality of distributor electrodes, a housing supporting movably the rotor electrode, an ignition coil which supplies the electric current of high voltage to the rotor electrode, and an ignition coil supporter which is fixed to the housing and on which the ignition coil is mounted so that the ignition coil is accommodated by the distributor, wherein the natural frequency of the ignition coil supporter is greater than the explosion frequency of the combustion engine and a thermoplastic characteristic of the ignition coil seupporter is less than that of a plastic resin cap covering a spark clearance between the rotor electrode and each of the distributor electrodes.

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.

Abstract: An ignition unit for internal combustion engines with an ignition coil having a ferromagnetic core integrated with a spark plug connector, about the main core of which is arranged a primary winding and a secondary winding surrounded by an insulating body; the ignition coil and the spark plug connector are so arranged to one another that the axial directions of the spark plug connector and of the main core of the ignition coil form at least approximately a right angle.

Abstract: An ignition coil in which an ignition coil is incorporated in a distributor housing is characterized in that the ignition coil has an annular core, and is disposed in the distributor housing so that the annular core surrounds a distributor-shaft support portion of the housing.

Abstract: To facilitate mounting of each ignition coil into each coil mounting hole formed in each cylinder head accurately with respect to both the longitudinal and angular positions of each ignition coil, a cylinder head is formed with a coil mounting hole including a first large-diameter inclined coil mounting hole, a second small-diameter inclined coil mounting hole, and an intermediate partially conical surface for connecting the first and second inclined coil mounting holes in axially eccentric positional relationship with respect to each other; and an ignition coil formed with an outer casing so as to be inserted into the coil mounting hole formed in the cylinder head. Further, a rocker cover sealing member is disposed along each of junction circumferences of two coil mounting holes and between the cylinder head and the rocker cover to prevent lubricant from flowing from a cam chamber to the ignition coil casings and further to the ignition plugs.

Abstract: A number of embodiments of coils for mounting on spark plugs for supplying the voltage for firing the spark plugs. In each embodiment, all operative components are disposed below the upper end of the center electrode terminal of the spark plug for reducing the size requirements of the engine. In some embodiments, the coil is mounted at least in part independently of the spark plug so that the spark plug will not carry the full weight of the coil.

Abstract: An ignition device for an engine is removable without removing the cylinder head cover, for gaining access to the spark plug. A case has a lower portion releasibly fitted around a spark plug mounted to a cylinder head of the engine. First and second bobbins having coils wound thereon are mounted concentrically in the case and a C-shaped core is positioned outside of the case and has distal ends fitted in the bobbins. An ignition head cover removably mounted to the cylinder head cover of the engine supports the core when the lower portion of the case is fitted around a spark plug.

Abstract: To facilitate inspection of ignition coils and ignition plugs without removing intake pipes from the cylinder head, while preventing the ignition coils from being heated by the cylinder head, in V-shape internal combustion engine, plural intake pipes branched from two air collectors are each arranged so as to extend above the cylinder head and across the cylinder line and further being offset away from over each ignition plug, and further plural ignition coils are each arranged over and connected to ignition plugs, respectively. The ignition coils are supported by two opposing support members formed on two outer side surfaces of two adjacent intake pipes.

Abstract: An ignition coil in which an ignition coil is incorporated in a distributor housing is characterized in that the ignition coil has an annular core, and is disposed in the distributor housing so that the annular core surrounds a distributor-shaft support portion of the housing.

Abstract: A distributor for an internal combustion engine has a housing, a shaft inserted in the housing, a head mounted on the shaft, a cap attached to the housing so as to cover the rotor head, a signal detector accommodated in the housing, a connector projecting outside the housing, and an ignition coil accommodated in the housing. The housing has a cut-out portion formed in a side wall thereof from an abutment between the cap and the housing and extending toward the bottom of the housing for receiving the connector, and the cap and the connector are tightly engaged with the housing through a gasket. Silicon rubber is charged in the gap between the housing and the ignition coil. A heat release plate may be provided between the housing and the signal detector so that a path formed by the plate and the housing and surrounding a section of the core is electrically cut off, whereby no current flows in the path.

Abstract: The spark plugs (1a, 1b; 2a, 2b; 3a, 3b; 4a, 4b) associated with each cylinder (1, 2, 3, 4) are supplied by respective ignition coils (21, 22, 23, 24) preferably mounted on the plugs themselves.

Abstract: A protective case (13) for a vehicle ignition system covers both the ignition coil (5), an electronic control device (6), and the terminals (11) and connecting conductors (12) therebetween. The preferred material is plastic, with an electromagnetically conducting coating for screening against incoming and outing electromagnetic noise. Thus, protection is provided against mechanical, chemical, and electromagnetic environmental influences. The case is dimensioned to snap over and seal respective edges of the electronic control device (6), the ignition coil (5) and its core (8), the electrical terminals (11), and the interconnecting conductors (12). The case is bifurcated along an access slit (16) which is secured in a normally closed position by knob (15) which press-fits into a mating hole on the other side of the slit. Two sides of the case have curved ridges or dimples which provide flexibility to hinge the case open for insertion of the ignition coil (5) and electronic control device (6).

Abstract: A housing structure of a distributor for an internal combustion engine including an ignition coil is disclosed. The housing structure comprises a cup-shaped base accommodating the ignition coil and a cap fitted thereon and accommodating a distributor rotor. A cap-shaped partitioning cover is disposed between the base and the cap to separate the distributor rotor portion therefrom. The high output voltage of the ignition coil is supplied to the distributor rotor through a hollow cylindrical tower fixed to the ignition coil and an insertion electrode which is integral with the cap and fits into the hollow cylindrical tower. The cover has a cap-shaped side extension having a annular disk-shaped top which passes through the insertion electrode.

Abstract: Apparatus for developing and applying sparks to the combustion chamber of an internal combustion engine. The apparatus comprises separate primary and secondary winding units. The secondary unit includes a spark plug having an insulator. The insulator carries a secondary coil winding which is connected to the electrodes of the spark plug. The insulator has a bore which contains a magnetic core for the secondary winding. The primary winding unit includes a primary winding and a tubular flux carrying part formed of magnetic material. The primary winding unit has a bore which is slipped over a portion of the secondary unit that has the secondary winding. A voltage is induced in the secondary winding by magnetic coupling to the primary winding when it is energized.

Abstract: Ignition apparatus for developing and applying sparks to the cylinders of an internal combustion engine. A plurality of a secondary spark developing units are respectively associated with the cylinders of the engine. Each secondary unit comprises a spark plug and a secondary winding carried by the spark plug that is connected to the electrodes of the spark plug. Magnetic flux is coupled to the secondary winding of the secondary units by a primary winding module. The module has a support portion and a plurality of spaced tubular members. A primary coil having a bore is located in each tubular member. A tubular flux carrying part formed of magnetic material is located about each primary coil. The module is supported by the engine in such a position that portions of the secondary units project into the bores when the module is mounted on an engine.

Abstract: This invention relates to a number of improvements in ignition systems of spark ignition engines. A detector is employed to sense the first or "breakdown" phase of spark discharge across the spark plug which causes a short duration high current flow across the plug gap. The detection of the breakdown current enables control over a number of ignition system functions. A pulse transformer is used which enables extremely short duration energization of the spark plug at controllable voltages. The existence of end gas auto-ignition is detected by energizing the spark plug during a period of the operating cycle after top dead center of piston travel. Since the threshold voltage necessary to generate spark discharge at the plug differs in conditions where auto-ignition is occurring versus ordinary combustion, sensing of plug breakdown during such energization provides a means of detecting the occurrence of auto-ignition.

Abstract: In a distributorless ignition system for an internal combustion engine, a single ignition coil unit, detachably mountable to a cylinder head, is provided for each pair of spark plugs. The ignition coil unit includes a coil portion having a core and primary and secondary windings wound on the core, a pair of plug couplers formed on the coil portion in correspondence to the spark plugs arranged on adjacent two cylinders of the engine, a pair of high tension couplers formed on the coil portion in directions different from those of the plug couplers, a first connecting member for electrically connecting one end of the secondary winding to one of the plug couplers, a second connecting member for electrically connecting the other end of the secondary winding to one of the high tension couplers, and a third connecting member for electrically connecting the other of the plug couplers to the other of the high tension couplers. Therefore, the ignition coil unit can be easily engaged and disengaged with the spark plugs.

Abstract: An integrated ignition-transformer assembly for the cylinder of a heat engine having controlled ignition, the assembly being of the type comprising a tubular body (11) delimiting: an internal shoulder (12), mounting means (13) on one side of said shoulder for mounting on the stem of a spark plug (15), and a housing (14) on the other side of said shoulder containing an axially fixed transformer coil (24) which is encapsulated in a dielectric coating (25) and which includes a terminal (30) for making contact with the spark plug; said mounting means (13) being constituted by disconnectably fixing means for co-operating with a complementary thread provided on the base (17) of an adopted spark plug; and said terminal (30) being in contact with the terminal pin (35) of a spark plug and being surrounded by an internal sleeve (32) of dielectric material which extends said transformer coil (24) to said shoulder (12), and which is intended to receive, in sealed manner, the stem (16) of the spark plug on which the assem

Abstract: The system comprisesa low-voltage electrical supply,an inductive voltage-increaser,a plurality of plugs, anddistribution means for allowing the selective supply of high voltage to the plugs through the voltage-increaser.The latter comprisesa low-voltage winding through which current flows each time a spark is prouduced in at least one plug, anda plurality of coils each of which is associated with a respective plug. Each coil includes first and second windings magnetically coupled together, the second winding being connected electrically to the plug. The distribution means are also adapted to connect the first winding of one or more of the coils selectively to the low voltage winding and to allow current to flow through the said windings to create the spark in the plugs connected to the said coils.

Abstract: An electromagnetic coil operates a fuel injector valve and generates a high voltage pulse to ignite a spark plug in an internal combustion engine. The primary and secondary windings of a coil are disposed between inner and outer cores. Electric current flowing at a first level through the primary winding induces magnetic flux in a first flux path to move a fuel flow control member to open a fuel flow path between a fuel inlet and a fuel outlet in the fuel injector valve. Current flowing at a second higher level through the primary winding induces a higher level of magnetic flux in a second flux path to move the fuel flow control member to a position closing the fuel flow path. A controller generates the first and second primary winding currents at the proper time in the engine operating cycle in response to engine operating conditions.

Abstract: In a spark plug connector for a high-voltage distributor-less high-voltage capacitor ignition system, comprising an ignition transformer and a storage capacitor connected on the secondary side to the ignition transformer, the spark plug connector is made rod-shaped with diameter dimensions corresponding to those of a spark plug and contains the storage capacitor and ignition transformer arranged one behind the other, the ignition transformer being disposed at the end of the spark plug connector remote from the spark plug connection.