Abstract: An engine ignition coil and wiring arrangement uses a connection position assurance device to assist in the connection of ignition wires to an ignition coil and the maintenance of the connections in engine use. The ignition coil is provided with a pair of parallel terminal posts and a mounting surface adjacent a bolt opening. Each of a pair of ignition wires has a cable portion and a connector portion. The connection position assurance device is a T-shaped element having tower portion with a bolt opening extending lengthwise therethrough and pair of connector holding portions extending in opposite directions adjacent one end of the tower portion. Each of the connector holding portions defines a central cavity for the retention of a connector portion of one of the ignition wires. Specific insertion and access openings from the cavity are also provided for insertion and access of the ignition wire connector portion.

Abstract: A vented, unitary sealing grommet for establishing a first liquid-tight interface between a ignition coil and a spark plug adapter tube and a second liquid-tight interface between the ignition coil and a valve cover includes a hollow main body portion having a substantially cylindrical shape with a longitudinal axis and including a pair of annular sealing ribs, a planar flange portion which is disposed within a geometric plane which is substantially perpendicular to the longitudinal axis, the main body portion being designed to fit between the ignition coil and the spark plug adapter tube such that the annular sealing ribs are compressed due to the interference fit. The planar flange portion is designed to fit between ignition coil and the valve cover.

Abstract: An ignition device 11 for a multi-cylinder internal combustion engine is to be designed so that it operates reliably even under conditions of vibration acceleration of the internal combustion engine. Ignition device 11 has, depending on the number of cylinders of the internal combustion engine, rod-shaped ignition coils 12. An end section 22 of each ignition coil 12 is formed by a part of a core 23 of ignition coil 12 that protrudes from a housing 20 of ignition coil 12. A damper 29 is mounted on the part of core 23. The other end section 21 of ignition coil 12 is formed by a high-voltage dome 27, which is mounted in a socket 39 made of elastic material and placed in a spark plug pit 15 of a cylinder head 13 of the internal combustion engine. Ignition device 11 is elastically held by fastening element 33 and secured at both end sections 21, 22 on cylinder head 13 of the internal combustion engine.

Abstract: A plug cap 100 for an ignition plug includes a first annular seal member 30 which seals a gap between an ignition cable 4 and an inner surface of an insulating pipe 20 in a liquid-tight manner and a second annular seal member 24 which seals a gap between an inner surface of an ignition plug-mounting hole 2 and an outer surface of the insulating pipe 20 in a liquid-tight manner. A cap member 40 includes a cover portion 41 which covers those portions of the first and second seal members exposed to the exterior of the engine, and an ignition cable-holding portion 43 which holds and curves the ignition cable 4 to regulate the angle of extension of the ignition cable 4 from the insulating pipe 20.

Abstract: An ignition coil arrangement for internal combustion engines is embodied so that a housing of an individual ignition coil can be produced economically, and attachment of the ignition coil can be accomplished easily. The ignition coil is configured as a rod-type ignition coil, and the housing is of basically cylindrical shape, since a holding element for fastening the ignition coil is configured in the high-voltage output of the ignition coil itself. Assembly and retention of the ignition coil are accomplished by a direct threaded connection on the high-voltage terminal of a spark plug. For rotational immobilization, a primary terminal of the ignition coil is coupled to a fastenable mating plug as a joining member. The ignition coil arrangement is preferably used in motor vehicles.

Abstract: An electrical insulator in accordance with the present invention includes a body, a ventilation passage, a bore, and a duckbill-shaped valve. The ventilation passage which extends between a first opening and a second opening in the body. The bore also extends through the body and is spaced from the ventilation passage. The duckbill-shaped valve comprises at least two walls. The walls are connected on opposing sides of the second opening and at an angle with respect to the body and each other so that the walls engage each other and define a space above the second opening and below the walls. A slit is formed between the walls. The portion of the walls at the slit normally remain in contact with each other until a cracking pressure is reached.

Abstract: A cylinder head cover for an internal combustion engine includes a plurality of contacts to which electronic parts of the engine are electrically connected. A control-unit connector has terminals to which an electronic control unit of the engine is electrically connected. A wiring portion has electric connections for interconnecting the contacts and the terminals of the control-unit connector, the wiring portion being integral with a wall of the cylinder head cover.

Abstract: An internal combustion engine intake manifold with molded-in wiring and tubing. The manifold is intended to reduce assembly time and cost, increase reliability by eliminating as much as possible all external wiring and tubing that service sensors and controllers. All sensors, controllers and fuel injectors are installed using molded-in threaded fastener sockets.

Abstract: In an ignition apparatus for an internal combustion engine including a first cover 1A composed of an insulating material, fixed to a cylinder head and having plug holes 6, ignition coils 20A inserted into the plug holes 6 and igniting a mixed gas in cylinders and a second cover composed of an insulating material and covering the ignition coils 20A, the ignition coils 20A are fixed by means of being held between the first cover 1A and a second cover 11A. With this arrangement, the total height of the ignition apparatus can be lowered as well as the center of gravity of the apparatus is located at a low position to improve a vibration resistant property.

Abstract: A plug cap freely mountable on or removable from an elongated bore, especially for a spark plug in internal combustion engines or the like. The plug cap is provided with a rain cover, seal, and a pipe-holding portion. The latter has, on its internal face, a circular groove and a plurality of protrusions projecting radially inwardly. These grooves and protrusions, and the deflection thereof on insertion into the bore, give elasticity to the seal and to the pipe-holding portion. When the plug cap is pressed into the bore, there is no curling up of the pipe-holding portion, thereby ensuring a reliable seal. After insertion, the protrusions of the pipe-holding portion, which are formed integrally with the seal, are pressed against the external face of the ignition pipe, so that the latter can be held more reliably.

Abstract: In a plug hole cap of an ignition apparatus for an internal combustion engine, the plug hole cap has a high water resistant characteristic with respect to the plug hole, and is manufactured in low cost. The ignition apparatus includes a cylinder head cover for fixing an ignition coil, an ignition plug stored in a plug hole formed in the cylinder head cover, a plug hole cap for closing an upper portion of the plug hole and an air bleeding hole penetrating the plug hole cap, for communicating the plug hole with the atmosphere. In particular, a water resistant wall covers at least an outside of a peripheral portion of an air bleeding hole outlet of the plug hole cap.

Abstract: A terminal portion (11) of a spark plug (10) and a connecting terminal (22) of an ignition coil (20) are connected through a coil spring (30) serving as a conductive member which in turn is covered with an insulating member (40) having a cap (41), a sleeve (47) and a bushing (48) and extending from the terminal portion (11) to a high-tension tower (21). A first air vent hole (44) is defined by an upper surface of a collar portion (42) of the cap (41) and a bottom surface of an ignition coil body (23) in intimate contact with the upper surface, and a plurality of reservoir spaces (45) having a greater volume than the first air vent hole (44) are formed in circumferentially spaced apart relation along the first air vent hole (44). A second air vent hole (46) is formed in the cap (41) for communication between the first air vent hole (44) and the interior of a plug hole (H).

Abstract: The present invention provides a detachable mounting mechanism for a fuel injector wiring harness cover. The cover is detachably mounted to a fuel injector assembly such as a fuel injector rail. The cover includes a base which has a channel for receiving the fuel injector wiring harness. A lid is adapted to be mounted on the base, thereby securing the fuel injector wiring harness within the channel. A pair of locking structures extend outwardly from the base. Each locking structure includes a continuous outer wall which defines a cavity adapted to receive a mounting tab located on the fuel injector assembly. A locking lever is pivotally attached to each locking structure and has a locked position and a released position. The locking lever is biased in the locked position. The locking lever includes an integrally formed handle extending outwardly from the locking structure and an integrally formed projection which extends into the cavity.

Abstract: A plug cap for an elongated bore has an upwardly open vent having an aperture. The aperture is provided with a water-tight flap, which is spaced apart from the uppermost section of the aperture and which is installed in a freely tiltable manner, so that the aperture of the vent can be closed by water pressure exerted on the plug cap. The cap is particularly intended for use in the ignition system of an internal combustion engine. In this context, when no water is sprayed, the heated air inside an elongated bore containing a spark plug is evacuated through the vent. When water is sprayed, as in the rain or a car wash, the aperture of the vent is closed by the water-tight flap under the water pressure, so that water is prevented from entering the elongated bore.

Abstract: A plug cap includes a plug cap body and a rain cover (24) having an air vent aperture (28) for communication between a spark plug mounting hole and the atmosphere. There is provided a sealing member (29) including a shaft portion (30) extending through the air vent aperture (28) and movably inserted therein with play and valve portions (31, 32) formed on projecting portions at opposite ends of the shaft portion (30) and having sizes larger than that of the air vent aperture (28). The shaft portion (30) includes a tapered shaft portion (30b) for closing an outer edge of the air vent aperture (28) by movement of the sealing member (29) toward the spark plug mounting hole, and a vent (33) for communication between the spark plug mounting hole and the atmosphere by movement of the sealing member (29) away from the spark plug mounting hole. An air vent structure for the plug cap reliably prevents water from entering the spark plug mounting hole.

Abstract: A spark plug is provided with a built-in, ring-shaped pressure sensor. The pressure sensor is composed of a plate packing, a piezoelectric element, an electrode plate and an insulating plate stacked one over the other and also includes a lead wire extending from the electrode plate through a through-hole formed in an upper part of a base portion of a metal shell to output electrical signals. The pressure sensor is accommodated in a cylindrical metal casing of L-shaped cross-section and disposed above a gasket and on the base portion. The metal casing is integrally welded over an entire circumference thereof to the base portion at an upper edge and also at a lower edge, whereby the pressure sensor is sealed within the metal casing.

Abstract: The present invention prevents drops of water from entering an ignition plug attaching hole through a vent hole formed for communicating an inner space of the ignition plug attaching hole with the atmosphere. A rain cover of an ignition plug attaching hole includes a cylindrical portion engaged in an ignition plug attaching hole formed in an engine head, the cylindrical portion liquid-tightly sealing the ignition plug attaching hole. A vent hole is formed in the cylindrical portion for communicating a space formed in the ignition plug attaching hole with the atmosphere. A flange portion is perpendicularly provided to the cylindrical portion so that the flange portion comes into contact with an outer surface of the engine head.

Abstract: A plug cap device has a plug cap body 110 provided with a groove 140 on the outer periphery. The groove 140 constitutes an air flow passage 150. The plug cap body 110 is provided with a recess in an intermediate portion of the air flow passage 150 on the outer periphery thereof so that the recess constitutes a water reservoir 260. High pressure air in a plug bore 102 is discharged through the air flow passage 150 from a vent hole 123 to an external area, thereby improving to vent the air. Water which enters the air flow passage 150 from the vent hole 123 is trapped in the water reservoir 260 so that the water is prevented from entering the plug bore 102.

Abstract: An apparatus for preventing the radiation and conduction of electro-magnetic wave noises generated from the igniting device of a gasoline engine is disclosed. The igniting portion of a gasoline engine such as an igniting coil, a continuously contacting and opening contact breaker, a power distributor, and igniting plugs generate all kinds of electro-magnetic wave noises of wide frequency bands. These noises give adverse effects to the various components of an automobile or an air plane such as electric and electronic convenience devices, safety devices and engine controllers, resulting in malfunctions of the components. By shielding and absorbing such electro-magnetic wave noises, an automobile or an air plane is protected from possible accidents, and human lives are saved.

Abstract: A wiring arrangement for an outboard motor including a circular wire harness body fitted within a casing that is secured to the upper portion of the engine of the outboard motor. The wire harness body has sets of branch wires that extend outwardly and which may also extend through slots formed in the side wall of the casing for coupled connection with branch leads that extend to various electrical components of the engine. The branch wire connectors may alternatively be formed integrally with the slots in the casing at which point the branch leads may be connected. Another embodiment provides tube-like extensions which extend outwardly from the slots to protect the branch wires. The branch leads and the coupled connections may also be contained within the tube-like extensions for protection.

Abstract: A high tension cord cover disposed at an engine cylinder head for covering a groove in which high tension cords pass through for supplying an ignition voltage current to a spark plug of the engine. The cover is made of an insulation material and having a cord retaining section at the bottom surface facing the groove for retaining the cords in parallel with each other. A plate like conductor is embedded in the cover keeping a predetermined distance therefrom and sandwiching a portion of the insulation cover, whereby a capacitor, which constitutes a capacitive divider in cooperation with a second capacitor for detecting misfire through the ignition voltage, is formed between the conductive cores of the high tension cords and the plate like conductor. The conductor can be electrically shielded. A second member made of an insulation material can be provided in the groove underneath the cover for retaining the cords such that the conductor embedded in the cover is kept the predetermined distance from the cords.

Abstract: A dual cam cover has a molded housing made, preferably, of a thermoset polyester composite material replacing an aluminum casting. An integral stiffening bar added between raised cam chamber walls includes retaining slots for holding associated spark plug wires. Peripheral mounting bosses include cylinder like angled ribs for sturdy support with a pleasant appearance. Isolated mounting screws combine with resilient gaskets in the peripheral flange and around central spark plug and fastener openings to provide sealing and mounting isolation. Improved oil separators include one piece metal baffles with formed drain openings. A bushing and a threaded insert are molded in for mounting a vent tube and an accessory.

Abstract: The subject of the present invention is a connector cap for linkage between an electrical cable and an elbowed high-voltage output shaft (1; 20; 35, 35') of an ignition device (2; 19). To that end, it includes locking means (8; 14; 22; 31; 32) for locking it counter to a movement in a direction parallel to the cable axis.

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: A wiring arrangement for an outboard motor including a printed circuit board fitted within a magneto generator cover that is secured to the top of the engine of the outboard motor overlying the rotor. The printed circuit board has projecting portions that extend radially outward from a generally disk-shaped body for coupled connection with branch wires, one of which acts as an output line extending from a remote control unit within an associated watercraft. The other branch wires extend downwardly to supply power to various electrical components of the outboard motor.

Abstract: An improvement in a wire loom mounting provides an appendage on a header flange, a non-circular aperture in the appendage, an insert keyed to fit the non-circular aperture, and means for mounting wire loom structures on the insert.

Abstract: A spark plug wire harness which includes a plurality of brackets having base portions which are secured to the valve cover of conventional internal combustion engines utilizing existing bolts and which have longitudinally and vertically aligned openings through which the spark plug wires are retained to thereby both space the wires from the engine and each other and to organize and align the wires between the distributor and the spark plugs. In some embodiments the brackets include adjustable sections.

Abstract: An adapter providing electrical and water-tight mechanical connection between a spark plug cable and a high output terminal of a distributorless ignition system. An expandable, electrode extension is anchored in the ignition system terminal at one end and connected to the spark plug cable via a spark plug terminal at the opposite end. The extension fits within a rubber insert that is inserted into the ignition tower to provide a water tight seal.

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: Ignition system wiring harnesses are used to carry discrete electrical signals to the fuel igniter devices of spark ignited engines. Externally mounted wiring harnesses are subjected to damage which can cause the engine to run inefficiently. The subject ignition system wiring harness extends through internal passageways in an engine block and a plurality of cylinder heads mounted thereon. The wiring harness is retained at fixed locations by a plurality of spring clip retainers, each of which has a normally flat elongate spring clip deflected around the wiring harness and slidably extending through a pair of slots in a bracket. The spring clip exerts a nearly constant force on the wiring harness as it tries to straighten to its normally flat condition regardless of the cross sectional size of the wiring harness. Thus, one size of spring clip retainer can be used for various sizes of wiring harness.

Abstract: A clamp for ignition cables has a band-like clamp holder tightly wound around the body portion of a rubber ignition plug cap enclosing the end portion of an ignition cable and has inserting and fixing portions provided on the outer circumference thereof, and has clamp pieces each having an inserting and fixing leg piece designed to be inserted so as to be releasably fixed in the respective inserting and fixing portions in a locking manner and has cord holding portions with a cord inserting port provided at the upper portion thereof. These clamp holder and clamp pieces are formed from a non-rubber rigid material. The clamp pieces are inserted into the clamp holder tightly engaged around the body portion of the ignition plug cap so as to be fixed and locked therein in an erect fashion. Ignition cables are then inserted into the cord holding portions and fixedly held therein.

Abstract: A spark plug wire loom is described in which an axially rotatable support routes the wiring and keeps the wires separated. A tapered head mounts a separator to a T-nut mount so that the separator pops into place into a recess in the T-nut mount and is kept there.

Abstract: An ignition lead arrangement comprising individual ignition leads which are constructed as flat cables which are integrated to a single molding for connection to an ignition distributor. The arrangement also comprises the necessary sockets for connection to the spark plugs and ignition coil which are covered with the insulating rubber which also forms the insulating material for the individual ignition leads.

Abstract: An ignition module that is adapted to be secured to an internal combustion engine. The module has a plastic housing and a metallic cover that is adapted to be secured to an engine. A plurality of ignition coils are located within the housing and cover. The lower wall of the plastic housing has conductors embedded therein that electrically connect the secondary windings of the coils to electrical connector assemblies that are carried by the housing and which are adapted to slip over the spark plugs of an engine. The connector assemblies include means for making an electrical connection to the terminals of the spark plugs. The ignition coils have laminated cores that are clamped between the housing and the cover. The cores directly contact the metallic cover so that the cores have a heat transfer path to the cover and are electrically connected to the cover.

Abstract: A spark ignition engine device adapted for use with a pump. The engine is mounted on a mounting structure. The engine has a magneto flywheel for generating an ignition current and a high-voltage ignition coil means electrically connected by a first conductive wire means to the magneto. A conductive shield covers the first wire means and is grounded. The spark plugs are electrically connected by a second conductive wires means to the coil to deliver a high-voltage spark to the engine. The second wire means is also covered by a conductive shield covering and the shield is grounded. A control box is provided and grounded to the mounting structure. The control box is positioned to enclose the coil means and to receive the shielded first wire means. The box has a capacitor means grounded to the box and connected to said shielded first wires to prevent reverse flow of EMI to the magneto.

Abstract: The invention relates to an ignition cassette unit for an ignition system for a multi-cylinder Otto-type four-stroke engine equipped with at least one spark plug per cylinder, the ignition system including for each spark plug an ignition device (61,62) connectible to said spark plug in the engine substantially without cables, the ignition system also incorporating a control unit (8) sending signals in response to the engine operating conditions for triggering sparks at the spark plugs in a predetermined order. In order to ensure, in such ignition sytems, transmission of maximum ignition voltage to the engine spark plugs and enable simple and safe handling of the ignition system during service the the like, the invention is mainly distinguished in that the ignition devices (61,62) to at least two adjacent spark plugs are included in a common, handleable unit, a so-called ignition cassette (70).

Abstract: An ignition device for a spark-ignited internal combustion engine wherein the essential components of the ignition device of a spark-ignited internal combustion engine are combined into an assembly unit which, following preassembly, is removably joined with the internal combustion engine.

Abstract: The invention relates to an ignition system for a multicylinder Otto-type four-stroke engine equipped with at least one spark plug per cylinder, the ignition system including for each spark plug an ignition device (61,62) connectible to said spark plug in the engine substantially without cables, the ignition system also incorporating a control unit (8) sending signals in response to the engine operating conditions for triggering sparks at the spark plugs in a predetermined order. In order to ensure, in such ignition systems, transmission of maximum ignition voltage to the engine spark plugs and enable simple and safe handling of the ignition system during service and the like, the invention is mainly distinguished in that the ignition devices (61,62) to at least two adjacent spark plugs are included in a common, handleable unit, a so-called ignition cassette (70).

Abstract: The invention relates to an ignition system for a multi-cylinder Otto-type four-stroke engine equipped with at least one spark plug per cylinder, the ignition system including for each spark plug an ignition device (61, 62) connectible to said spark plug in the engine substantially without cables, the ignition system also incorporating a control unit (8) sending signals in response to the engine operating conditions for triggering sparks at the spark plugs in a predetermined order. In order to ensure, in such ignition systems, transmission of maximum ignition voltage to the engine spark plugs and enable simple and safe handling of the ignition system during service and the like, the invention is mainly distinguished in that the ignition devices (61, 62) to at least two adjacent spark plugs are included in a common, handleable unit, a so-called ignition cassette (70).

Abstract: A cover for a ventilation valve in a vehicle engine provided in the passage of blow-bye gas to be transmitted into an intake manifold. The cover is adapted to isolate the ventilation valve from the cold and prevent it from being freezing.

Abstract: The invention contemplates a capacitor-discharge ignition system which includes a particular low-resistance, low-inductance, wire-wound circuit element at the spark plug which is operative with the spark plug and with the rest of the ignition system to materially suppress RFI generated at the spark gap. In application to high-speed, high-power two-cycle engines, use of the invention does not adversely affect engine performance.

Abstract: A V-shaped, air-cooled engine is provided with a cover on the front thereof, which houses a cooling fan connected to the engine's crankshaft. The interior of the cover is fitted with dividers to separate the air flow and direct it to the opposite sides of the engine, and to form a compartment for housing components of a non-contact ignition system. The non-contact ignition system is operated by the cooling fan, and is cooled by the flow of air through the cover. Components of the ignition system are permanently connected to each other, without the usual separable connectors.

Abstract: A glow plug connector for operably connecting a power source to the glow plug of a model engine. The connector has a center pole snap on lead which is configured to receive the center pole of a glow plug. A second ground lead is configured in the form of a helical coil for surrounding the glow plug body and being contactable with the engine head for completing an electrical circuit through the glow plug. The connector is designed to permit attachment and quick disconnect capabilities with one hand.