Patents Assigned to Prufrex-Elektro-Apparatebau, INH. Helga Muller geb Dutschke
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Patent number: 8150606Abstract: An electrical ignition method for a combustion engine employing the use of an arrangement of several coils and a magnet wheel or magnet generator which rotates synchronously with the combustion engine, wherein the magnetic field of the magnet generator intermittently flows through the coils and therein generates a sequence of magnetic flux changes per revolution, whereby a sequence of corresponding alternating voltage half-waves is induced in the coils, which are used for charging an energy storage element. Through the use of a stop and/or switch-off system for the combustion engine, the disclosed method prevents a discharge of the energy storage element during the stopping and coast down procedure of the combustion engine and/or to actuate its charging, so that a charged energy storage element is available for the next start of the combustion engine.Type: GrantFiled: September 29, 2008Date of Patent: April 3, 2012Assignee: Prufrex-Elektro-Apparatebau, Inh. Helga Muller, Geb DutschkeInventors: Leo Kiessling, Marek Lajda
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Patent number: 8032292Abstract: 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.Type: GrantFiled: July 31, 2008Date of Patent: October 4, 2011Assignee: Prufrex-Elektro-Apparatebau, Inh. Helga Muller, Geb. DutschkeInventors: Leo Kiessling, Stanislaw Cichon
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Publication number: 20090084368Abstract: Electrical ignition method for combustion engines through the use of an arrangement of several coils and a magnet wheel or magnet generator which rotates synchronously with the combustion engine, where the magnetic field of the magnet generator intermittently flows through the coils and therein generates a sequence of magnetic flux changes per revolution, whereby a sequence of corresponding alternating voltage half-waves is induced in the coils, which are used for charging an energy storage element, which is discharged by actuating an ignition switch via the primary coil winding of a pulse transformer for initiating an ignition spark, and for generating the operating voltage or voltage supply for an electronic, analog and/or digital and/or programmable control unit, which is deployed for actuating the ignition switch at an ignition point in dependence of the acquired alternating voltage half-waves and/or from the state of the combustion engine, for example its rotational position or rotational speed, and tType: ApplicationFiled: September 29, 2008Publication date: April 2, 2009Applicant: Prufrex-Elektro-Apparatebau, Inh. Helga Muller, geb. DutschkeInventors: Leo Kiessling, Marek Lajda
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Publication number: 20090071441Abstract: Electrical ignition procedure for internal combustion engines, using an arrangement of multiple coils and of a magnetic generator that is coupled with the machine and turns synchronous to the machine, whose magnetic field partially flows through the coils and thereby generates a sequence of magnetic flux changes for each revolution, whereby a sequence of corresponding alternating current half waves is induced in the coils, that are used for: charging an energy storage element that is discharged by activated an ignition switch via the primary coil winding of an ignition transmitter for triggering an ignition spark for the combustion engine scanning, acquiring, processing and/or assessing via a microelectronic and/or programmable control device, that is used for activating the ignition switch at an ignition time in dependence on the acquired and assessed alternating current half waves and/or on the state of the internal combustion engine, such as its rotational setting or speed, and for formation of the poweType: ApplicationFiled: July 31, 2008Publication date: March 19, 2009Applicant: Prufrex-Elektro-Apparatebau, Inh. Helga Muller, geb. DutschkeInventors: Leo Kiessling, Stanislaw Cichon
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Patent number: 7156075Abstract: 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.Type: GrantFiled: August 11, 2005Date of Patent: January 2, 2007Assignee: Prufrex-Elektro-Apparatebau, INH. Helga Muller geb DutschkeInventor: Leo Kiessling
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Patent number: 6701896Abstract: An electrical ignition for internal combustion engines having coils and a magnetic generator that rotates synchronously with the engine. The generator's magnetic field passes periodically through the coils and induces a sequence of corresponding alternating-voltage half-waves. These charge an energy-storage element, that is discharged by actuation of an ignition switch to trigger an ignition spark and they form the voltage supply of a microelectronic and/or programmable control that actuates the ignition switch in an ignition time instant as a function of the detected half-waves and/or of a rotational state of the engine. Within one rotation, there is chosen, for the triggering of the ignition spark to prolong its burn-time, a time interval in which the primary and/or secondary coil winding is influenced by one of the half waves and the amount or range of the magnetic flux change used to prolong the burn-time is greatest within the respective sequence.Type: GrantFiled: August 2, 2002Date of Patent: March 9, 2004Assignee: Prufrex-Elektro-Apparatebau, Inh. Helga Müller, geb. DutschkeInventor: Leo Kiessling
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Patent number: 6691689Abstract: 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.Type: GrantFiled: October 12, 2001Date of Patent: February 17, 2004Assignee: Prüfrex-Elektro-Apparatebau, Inh. Helga Müller. Geb DutschkeInventor: Leo Kiessling
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Patent number: 6478010Abstract: A revolution threshold regulator and/or toggle switch has a first and a second fixed phase source of alternating current having a frequency proportional to the revolution speed of a rotor of an internal combustion engine. A trigger device scans the alternating currents to emit a control signal at a revolution threshold above or below a preset revolution threshold. The trigger device has a timer module which cooperates with one of the alternating current sources through a trigger charge element which can be discharged via at least one discharge path to create a control signal. The trigger charge element, as it discharges, sends a control current through a series Zener diode in a blocking direction to the control signal output.Type: GrantFiled: July 16, 2001Date of Patent: November 12, 2002Assignee: Prüfrex-Elektro-Apparatebau Inh Helga Müller, geb. DutschkeInventor: Leo Kiessling
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Patent number: 5138995Abstract: An ignition method and system for internal combustion engines, especially in lawn mowers or chain saws, in which a magneto induces a plurality of alternating voltage half-waves for each engine revolution to charge an energy-storing element and to discharge it by a switch controlled by the primary coil of an ignition transformer. The switch is actuated when the first half-wave of each revolution reaches a trigger threshold. The ignition system induces the charging alternating voltage dependent upon the rotary position of the engine for the energy storage element and for discharging it via the switch for firing the spark synchronously with the alternating voltage. The system has a timer module which responds to the alternating voltage by producing a signal to block the ignition switch for the duration of a time interval which corresponds to a top speed limit of the internal combustion engine.Type: GrantFiled: June 5, 1991Date of Patent: August 18, 1992Assignee: Prufrex-Elektro-Apparatebau Inh. Helga Muller geb. DutschkeInventor: Werner Erhard
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Patent number: 5069193Abstract: An ignition method and system for internal combustion engines, especially in lawn mowers or chain saws, in which a magneto induces a plurality of alternating voltage half-waves for each engine revolution to charge an energy-storing element and to discharge it by a switch controlled by the primary coil of an ignition transformer. The switch is actuated when the first half-wave of each revolution reaches a trigger threshold. The ignition system induces the charging alternating voltage dependent upon the rotary position of the engine for the energy storage element and for discharging it via the switch for firing the spark synchronously with the alternating voltage. The system has a timer module which responds to the alternating voltage by producing a signal to block the ignition switch for the duration of a time interval which corresponds to a top speed limit of the internal combustion engine.Type: GrantFiled: July 19, 1990Date of Patent: December 3, 1991Assignee: Prufrex-Elektro-Apparatebau Inh. Helga Muller geb. DutschkeInventor: Werner Erhard
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Patent number: 5050553Abstract: A capacitor ignition system for internal combustion engines, particularly for lawn mowers, chain saws, abrasive cutting-off machines, etc., has a magnetic generator for triggering a primary firing pulse generator to charge a capacitor. An electronic switch discharges the capacitor via the primary winding of the ignition coil. The primary pulse generator controls a tachometer to address a stored characteristic ignition field program to thereby provide an rpm-dependent delay in the firing pulse relative to the magnetic generator pulse. The characteristic ignition field program has different advance curves for the same rpm under different operating conditions. A switching-over device monitors the operating state of the engine in order to switch over from a starting igntion advance curve to an operating ignition advance curve and back again. The starting ignition advance curve and operating ignition advance curve overlap in a region of the rpm which has the idling rpm as the upper limit.Type: GrantFiled: April 26, 1990Date of Patent: September 24, 1991Assignee: Prufrex-Elektro-Apparatebau Inh. Helga Muller, geb. DutschkeInventor: Werner Erhard
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Patent number: 5046468Abstract: Inductive rotary emitter for controlling the instant of ignition of internal combustion engines, has a coil with a permanent magnet core and a yoke wheel turned by a shaft. Circumferentially distributed projecting, spaced, tooth-like segments on the yoke wheel are moved past the magnet poles for voltage induction. Tangentially adjacent tooth segments are at differently spaced intervals from one another.Type: GrantFiled: July 27, 1990Date of Patent: September 10, 1991Assignee: Prufrex-Elektro-Apparatebau Inh. Helga Muller, geb./DutschkeInventor: Werner Erhard
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Patent number: 4722311Abstract: Capacitor ignition apparatus for internal-combustion engines with a magneto generator and an ignition pulse generator for the switching through of an electronic switch which discharges the capacitor via the primary winding of the ignition coil, wherein the ignition pulse generator triggered by the magneto generator and provided with a revolution counter effects via a stored ignition characteristics program a revolution-dependent delay of the ignition pulse with respect to the magneto generator pulse.Type: GrantFiled: February 4, 1987Date of Patent: February 2, 1988Assignee: Prufrex-Elektro-Apparatebau Inh. Helga Muller, geb./DutschkeInventor: Werner Erhard