110results about "Ignition circuit layouts" patented technology

A control system for a low cost, light duty combustion engine, where the control system generally utilizes engine speed and/or temperature input signals and independent operating sequences to determine a desired ignition timing and air-to-fuel ratio for a combustible mixture. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence that commences after the engine is initially turned on, a Warm Up sequence which follows the Cranking sequence, a Normal Mode sequence for typical operating conditions, an Acceleration sequence for certain increases in engine speed, a Come Down sequence for when a sufficient engine speed is followed by a certain decrease in speed, and a Recovery Bump sequence for when the engine speed dips below a predetermined level.

Provided is a control device for an internal combustion engine, employing a microprocessor to control a load other than an ignition device, the control device being provided to an internal combustion engine in which is installed a magnet generator that has a magneto coil for successively generating, in association with revolution of the internal combustion engine, a first half wave voltage, a second half wave voltage of different polarity than the first half wave voltage, and a third half wave voltage of identical polarity to the first half wave voltage; and the magnet generator employing the second half wave voltage to drive the ignition device. The device is provided with an electricity storage element which draws excess power from the output that is output by the magnet generator for the purpose of driving the ignition device, and which is charged by the first and second half wave voltages, as well as being charged by the second half wave voltage as well at times that the internal combustion engine is in the exhaust stroke, in order to supply power to the load and to the microprocessor. The power source circuit is constituted to use the energy stored in this electricity storage element to generate power source voltage for presentation to the microprocessor and to the load other than an ignition device.

There is proposed an internal combustion engine ignition apparatus in which a switching circuit having no power supply terminal connected to a power supply such as a battery, and includes an output terminal connected to an ignition coil, an input terminal for receiving supply of an ignition signal voltage, and a reference potential terminal connected to a reference potential. A current supply circuit is connected between the input terminal and the reference potential terminal, and a current is supplied from the current supply circuit to a drive resistor of the switching element. This current supply circuit is controlled by a constant current circuit, and supplies a driving current, which is made a constant current, to the drive resistor between a rising portion of the ignition signal voltage and a falling portion thereof. The driving current, which is made the constant current, keeps the gate voltage of the switching element being constant in the on period.

An ignition system is provided, in which a Zener diode is connected in parallel with a spark plug, to suppress torque variation from becoming large in an engine when deterioration of the spark plug is advanced. Specifically, the ignition system includes a secondary coil having an end connected to a center electrode of the spark plug via a connecting path. The connecting path is connected to a constant-voltage path having a grounded end and including the Zener diode. The time from when an ignition signal is switched off until when ignition timing occurs is measured for a plurality of times. The difference between a maximum value and a minimum value among the plurality of measurements is defined to be a variation range. A breakdown voltage of the Zener diode is adjusted based on requirements such as for rendering the variation range to be a predetermined time or smaller.

The invention provides an ignition device for an internal combustion engine including an ignition circuit (6) which generates high voltage for ignition and an ignition position control portion (10) for controlling ignition position at the time of providing ignition signal (Si). In the invention, in order to avoid recoil at the time of the internal combustion engine starting, a signal generator (2) is provided that generates a first pulse signal (P1), and a second pulse signal (P2) and a third pulse signal (P3) having a different polarity from the first pulse signal (P1), and the ignition position control portion includes: start time ignition signal providing means (11) for providing an ignition signal to an ignition circuit when the signal generator (2) successively generates the pulse signals having the same polarity at the start of the engine; idling time ignition signal providing means (12) for providing an ignition signal to the ignition circuit in response to the second pulse signal (P2) when first ignition at the start is completed and a rotational speed is an idling rotational speed or less; and normal rotation time ignition signal providing means (13) for arithmetically operating an ignition position and providing an ignition signal to the ignition circuit at a crank angle position that matches the arithmetically operated ignition position when the rotational speed of the internal combustion engine exceeds the idling rotational speed.

An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding disposed outward of the primary winding and inductively coupled to the primary winding. The secondary winding terminates at one end thereof in a low-voltage end and terminates at another end thereof in a high-voltage end. At least one of the low-voltage end of the secondary winding and the high-voltage end of the secondary winding is electrically connected directly to a terminal through an electrically conductive polymer.

In a control apparatus for a general-purpose internal combustion engine including a generator as a power supply, the generator includes a main generator coil supplying power to the stepping motor, and an auxiliary generator coil supplying power to an ignition device of the engine. The apparatus includes ignition timing controller for, when starting the engine by a manual starter, detecting that an engine speed reaches or exceeds a predetermined engine speed not exceeding a connecting rotation speed of a centrifugal clutch to retard an ignition timing of the engine, thereby suppressing increase in the engine speed to less than the connecting rotation speed, and for restoring the ignition timing to its normal timing after a predetermined time elapses from start of retarding the ignition timing. Accordingly, it suppresses overshooting of an engine speed above the connecting rotation speed even if a delay occurs in closing a throttle valve by a delay in activating the motor.

The ignition control device includes a spark plug that includes a first electrode and a second electrode disposed so as to oppose each other, an ignition coil that includes a plurality of sets of a primary coil and a secondary coil, generates a high voltage in the secondary coil by energizing or interrupting a primary current supplied to the primary coil, and applies the generated high voltage to the first electrode, and a control unit that, in a case where a plurality of the primary coils are driven during a single ignition process, temporarily stops energization of a primary current supplied to a second primary coil when a primary current supplied to a first primary coil is interrupted, and re-energizes the primary current supplied to the second primary coil following the elapse of an energization stoppage period.

The invention provides a dual-mode power supply circuit of a digital igniter, which can utilize a magnetogenerator to supply power for the digital igniter under the condition of insufficient jar voltage or bad contact. The dual-mode power supply circuit of the digital igniter comprises a power supply circuit, a capacitor charge and discharge circuit and a magnetogenerator voltage pulse distribution circuit, wherein the power supply circuit is used for receiving voltage pulse output by the magnetogenerator or the output voltage of a jar and outputting the working voltage of the digital igniter; the capacitor charge and discharge circuit is used for receiving the voltage pulse output by the magnetogenerator for charge and energy storage and discharging an ignition coil according to the ignition pulse signal of the digital igniter; and the magnetogenerator voltage pulse distribution circuit is used for receiving the voltage pulse of the magnetogenerator and respectively distributing the positive half cycle and the negative half cycle of the voltage pulse of the magnetogenerator to the power supply circuit and the capacitor charge and discharge circuit.

A downlink communication data DND from a main control circuit section to a combination control circuit section is divided into first and second downlink data, high-speed communication using a downlink clock signal and a transmission start instruction signal is performed, a high-speed load which has been directly driven from the main control circuit section is indirectly driven at high speed from the combination control circuit section by the first downlink data, a low-speed analog input signal ANL which has been indirectly inputted to the combination control circuit section is inputted to a specific input channel of a multi-channel converter through an indirect multiplexer, and channel selection is made by the downlink communication data.

The present invention is an electronically controlled fuel injection type outboard engine, which includes a lifting mechanism driven by a hydraulic system and an ECU control module; the engine is equipped with a supporting fuel system; the hydraulic system and the fuel system are both integrated and controlled by the electronic control system; the fuel system Including the sequential connection of fuel pipes: fuel tank, fuel pump, high-pressure fuel pump, electronic fuel injector; electronic fuel injector is installed on the engine; there is also a filter cup on the fuel pipe between the fuel tank and the fuel pump; The three electronic fuel injectors are connected in series by the fuel common rail; the electric control system includes at least a battery, a magneto, a spark plug, and multiple sensor control elements; there are multiple spark plugs on the engine; the spark plugs are electrically connected by a high-voltage package; the high-voltage package and The starter relay is connected; the output terminal of the battery is connected to the starter relay by the line; the high voltage package is also connected to the magneto by the rectifier voltage regulator; the magneto is also connected to the battery; the battery is connected to the starter motor through the power line; The flywheel shaft of the engine is connected.

Systems and methods for indicating status of a piston engine magneto (MAG). An example system includes a MAG sensing circuit that senses a signal from the MAG and an indication device that output an indication of the operational status of the MAG based on the sensed signal. The MAG sensing circuit samples a signal from a P-lead of the MAG. The indication device determines if the sampled signal is below a predefined threshold value. The indication device includes a field effect transistor (FET) that receives the sampled signal at its gate. The FET is placed in an on state if the sampled signal is above the predefined threshold value, and the FET is placed in an off state if the sampled signal is below the predefined threshold value. A light is activated when the FET is in the on state and deactivated when the FET is in the off state.

The invention relates to an ignition device for an Otto engine, comprising an ignition coil (2), a printed circuit board (3), which carries a control circuit with a power transistor (5), a plastic housing (1), in which the ignition coil and the printed circuit board are arranged, and a thermal dissipation element (7), which protrudes through a wall of the plastic housing. In accordance with this disclosure, the printed circuit board (3) carries a cooling body (6), which is plugged together with the thermal dissipation element (7) to form a thermal bridge, which dissipates thermal losses of the control circuit out from the plastic housing (1).

The detection of the switching state of a stop switch at a switch terminal of an ignition device for an internal combustion engine is provided, in which an ignition pulse for controlling an electronic ignition switch is generated and a first power storage device is discharged via an ignition coil and during this discharge a voltage signal having negative and positive voltage half waves is generated, which is used for synchronizing a sampling, representing the switch state of the stop switch, particularly its closed position, of a voltage value at the switch terminal.

An automobile ignition coil for use in an ignition system is provided having a central cylindrical magnetic core element, and a secondary coil circumscribing the core element. The second linear length of copper wire has a cross sectional area in a rectangular, rhomboid or hexagonal regular polygonal shape. A primary coil circumscribes the secondary coil, and similarly has a cross sectional area in a rectangular, rhomboid or hexagonal regular polygonal shape.

An ignition system for an internal combustion engine that utilizes a single primary coil and a single secondary coil to drive a pair of spark plugs. Current flowing in both a first direction and a second direction passes through the primary coil. The current flowing through the primary coil induces corresponding current in the secondary coil, which flows from the secondary coil to one of two spark plugs. Each spark plug is coupled to the secondary coil such that each of the two spark plugs receives current flowing only in a single direction. The current flowing through the ignition system can be from either a power source or created by the rotation of a flywheel having a series of magnet clusters.