Abstract: Disclosed is an engine drive system that uses an open-type regulator as a regulator that rectifies an output and adjusts a voltage of a magneto AC generator driven by an engine. A means is provided that performs a process of increasing an opening degree of an ISC valve for a limited amount of time when a load of the generator is applied, while the engine is idling. Temporarily increasing an output torque of the engine prevents a rotational speed of the engine from dramatically decreasing, or the engine from stalling, during idling.

Abstract: A power tool is provided. The power tool includes an internal combustion engine and an integrated device coupled to the internal combustion engine. The internal combustion engine includes a flywheel or another rotating component. The integrated device is enclosed in a housing and is coupled adjacent to either the flywheel or a rotating component. The integrated device includes a printed circuit board with a wireless communications module and a power generation portion which receives power wirelessly from the internal combustion engine.

Abstract: An ignition control apparatus for engines is provided. The ignition control apparatus is designed to control a switch to release energy stored in a capacitor during spark discharge, thereby supplying a primary current to an other end side opposite a one end of a primary winding of an ignition coil connected to a dc power supply. This provides the ignition control apparatus which is capable of minimizing an increase in size or manufacturing cost and stabilizing the state of combustion of an air-fuel mixture.

Abstract: An ignition control device and corresponding method are provided for suppressing reverse rotation of the engine during startup process of a light duty gasoline engine, the ignition control device includes: a charge coil, a transformer, an electric-spark-generating control circuit, a trigger coil, a position sensing circuit, and a micro-controller. The position sensing circuit is used to shape the positive signal and negative signal of the second alternating current signal induced by the trigger coil while the fly wheel rotates respectively to generate a first position signal and a second position signal. According to the first position signal and the second position signal, it is determined by the micro-controller whether the engine is in the state of reverse rotation, and if YES, output of the ignition signal is stopped to make engine halt due to absence of reverse power.

Abstract: An ignition procedure for internal combustion engines using multiple coils of a generator coupled to and turning synchronously with the engine. A magnetic field flows through the coils and generates a sequence of alternating current half waves induced in the coils. The half waves are used for: (1) charging an energy storage element that is discharged by an ignition switch via the primary coil winding for triggering an ignition spark; (2) processing via a control device for activating the ignition switch at an ignition time in dependence on the processed alternating current half waves and/or on the state of the internal combustion engine; and (3) the power supply for the control device (U8), and an operating mode for switching combustion off for the engine, whereby by means of the control device, the ignition switch is guided over less than the time span that is needed for a complete revolution of the magnetic generator.

Abstract: A spark injection system for an internal combustion engine for the detonation and combustion of remaining fuel/air mixture within the cylinder, the spark injection system introduces a pulsed electrical charge into the cylinder after the initial detonation when the piston is in a position of approximately five degrees after top dead center and the spark continues or is intermittently continued through the power stroke and through three quarters of the exhaust stroke, thus combusting the remaining fuel/air mixture and maintaining a higher temperature within the cylinder and alternatively the pulsed electrical charge is introduced during all four cycles of the cylinders operation.

Abstract: A capacitive discharge ignition (CDI) system that can be used with a variety of light-duty internal combustion engines, including those typically employed by lawn, garden, and other outdoor equipment. According to one embodiment, the CDI system includes an ignition module having a first switching device that shorts a charge coil during an initial portion of a charge cycle. Subsequently, the first switching device is turned ‘off’ so that a flyback charging technique charges an ignition capacitor. A second switching device is then used to discharge the ignition capacitor and initiate the combustion process.

Abstract: For stopping an internal combustion engine, a stop switch prevents the triggering of the ignition. A controller in the ignition circuit determines the state of the stop switch by evaluating signals on the state of the internal combustion engine, corresponding information data is generated, and a corresponding stop flag is set and/or enabled. Depending on this information, the activation of the ignition switch, that controls ignition spark, is either blocked or enabled by the controller.

Abstract: A positioning pin is knocked onto a crankshaft of an engine and a key way is formed in a boss of a first flywheel. When an outer rotor type generator is connected with the engine, the boss of the first flywheel is fitted over the crankshaft so as to adjust the positioning pin to the key way. When an inner rotor type generator is connected with the engine, a rotor shaft on which a rotor of a generator is mounted is fitted to a second flywheel so as to adjust the positioning pin to a key way formed in the second flywheel. The ignition angle of the engine is determined by fitting the positioning pin to the key way.

Abstract: A control unit for engine startup includes a throttle valve, a bypass air quantity-regulating valve, an ignition coil, a bypass air quantity controller, an ignition timing feedback controller, and a multi-spark controller. The throttle valve is disposed in an intake passage of an engine to control intake air quantity. The bypass air quantity-regulating valve controls the air quantity in a bypass passage that bypasses the throttle valve. The ignition coil permits an ignition plug of a same cylinder of the engine to produce multi-sparking during one cycle. The bypass air quantity controller controls the bypass air quantity-regulating valve such that the engine speed is at a target engine speed. The ignition timing feedback controller performs feedback control for the ignition coil such that the ignition timing of the ignition plug is at a target ignition timing. The multi-spark controller controls the ignition coil such that the ignition plug performs multi-spark as necessary.

Abstract: A control system for a low cost, light duty combustion engine, where the control system generally utilizes engine speed or engine speed and 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.

Abstract: Apparatus and method for detecting the direction of rotation of an internal combustion engine using a magnet wheel which moves past an electrical ignition coil. For each revolution, at least one current or voltage pulse is induced in the coil having a polarity dependent on the direction of rotation. The magnet poles and the coil have geometric relationships that, upon each magnet wheel revolution, the curve form of the current or voltage pulse has at least two prespecified extreme points with a curve characteristic which is substantially neither rising nor falling and at least one break point with a discontinuity. A direction of rotation signal is derived from these curve characteristics.

Abstract: An ignition apparatus for use with an internal combustion engine to produce an electrical spark at a spark ignition device. The ignition apparatus includes triggering circuitry having a processor with stored timing data. The processor receives a signal indicative of the rotational position of the magnet and generates a triggering signal. The triggering circuitry switches between a first mode wherein the triggering signal occurs at a fixed time relative to top dead center and a second mode wherein the triggering signal occurs at a variable time relative to top dead center based on the stored timing data.

Abstract: An ignition control system for an internal combustion engine comprising a signal generator to generate pulse signals at a peculiar rotation angle position of the internal combustion engine and a position detection circuit to output a position detection signal whenever a zero cross point of a waveform of an output from a magneto AC generator driven by the engine is detected whereby when the engine should start, the engine is ignited as the signal generator generates the pulse signal, when the engine is idling, it is ignited as the position detection circuit outputs the position detection signal during the period after the pulse signal is generated and before the next pulse signal is generated and in the area exceeding the idling rotational speed, it is ignited at the ignition position arithmetically operated by a microcomputer.

Abstract: An apparatus and process for diagnosis or control of the ignition or load state of a two or four cycle internal combustion engine. A generator rotating synchronously with the engine generates alternating voltages which are scanned by a control and the alternating voltage amplitudes correspond to the rotational speed of the engine. The control detects at least one of the voltage amplitudes each revolution and, based upon the detected amplitude, calculates a control or diagnosis value, sets one or more flags and/or triggers a control event at an ignition control and/or data output.

Abstract: A contactless ignition system is provided with an ignition charge discharge condenser for charging an induced voltage of a generating coil, a first switching element, triggered to conduct when an induced voltage of a trigger coil reaches an initial trigger level, for supplying a voltage charged into the ignition charge discharge condenser into an ignition coil, and a trigger control condenser for charging induced voltages of the generating coil and the trigger coil, and triggering of the first switching element caused by an induced voltage of the trigger coil is inhibited by a second switching element during a specified discharge time following charging of the trigger control condenser.

Abstract: The invention is relative to an ignition unit for internal combustion engines that comprises a primary circuit with a first switch for a primary winding for generating inductions in a secondary winding of a secondary circuit with a starter gap and that comprises a load circuit with the primary winding and comprises a second switch for a load.

Abstract: A control system for a low cost, light duty combustion engine, where the control system generally utilizes an engine speed input signal 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.

Abstract: A capacitive discharge ignition apparatus provides spark advance with engine speed. The ignition apparatus includes triggering circuitry connected to the primary coil of the high voltage transformer. The triggering circuitry produces a triggering signal based on voltage induced in the primary coil by revolution of a permanent magnet. The triggering circuitry is adapted to provide the triggering signal at low RPMs on the trailing edge of a predetermined half cycle. At higher RPMs, the triggering signal shifts to the leading edge of the half-cycle so as to advance the spark.

Abstract: A starting system for a manual only pull start internal combustion engine with a starting pulley, a pull cord wrapped around the starting pulley, a rotor selectively engageable with the starting pulley, and an ignition module located adjacent to rotor. The starting pulley has a pull cord groove with an enlarged diameter between about 2.5 to 3.4 inches. The ignition module is adapted to fire a spark plug of the engine with a timing retard of about 8 degrees at a speed of about 500 rpm of the rotor.

Abstract: A drive adapter which adjusts the timing of an automotive generator/magneto (“magneto”)for use with a two cylinder motorcycle engine. The drive adapter has a rotor shaft which connects to the crankshaft of a motorcycle engine. The rotor shaft is connected, in a eccentric relationship, to a slide plate having a keyway for receiving the input shaft for the magneto. The eccentric relationship is created by the rotor shaft and magneto shaft having different axises of rotation. The eccentric relationship causes the distributor lead of the magneto to travel at varying speeds along its rotation, allowing an automotive magneto with evenly spaced distributor contact leads to be used in the ignition system of a motorcycle having timing angles which do not correspond to the evenly spaced contact leads of the distributor portion of the magneto.