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公开(公告)号：US11333122B2
公开(公告)日：2022-05-17
申请号：US16531195
申请日：2019-08-05
Applicant: DENSO CORPORATION
Inventor： Ippei Funato
Abstract: An ignition control system performs discharge generation control, in which a discharge spark is generated, once or a plurality of times during a single combustion cycle. The ignition control system successively calculates an approximate energy density based on a secondary current and a discharge path length. During a predetermined period after blocking of a primary current is performed during a single combustion cycle, the ignition control system calculates an integrated value by integrating the discharge path length at this time, based on the approximate energy density being greater than a predetermined value. The ignition control system performs the discharge generation control again based on the calculated integrated value being less than a first threshold.
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公开(公告)号：US11073123B2
公开(公告)日：2021-07-27
申请号：US16316756
申请日：2017-07-12
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Matthew A. Braun , Cyrus M. Healy , Shunya Nakamura , Tsuyoshi Watanabe
Abstract: In at least some implementations, a method of maintaining an engine speed below a first threshold, includes: (a) determining an engine speed; (b) comparing the engine speed to a second threshold that is less than the first threshold; (c) allowing an engine ignition event to occur during a subsequent engine cycle if the engine speed is less than the second threshold; and (d) skipping at least one subsequent engine ignition event if the engine speed is greater than the second threshold. In at least some implementations, the second threshold is less than the first threshold by a maximum acceleration of the engine after one ignition event so that an ignition event when the engine speed is less than the second threshold does not cause the engine speed to increase above the first threshold.
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公开(公告)号：US11067051B2
公开(公告)日：2021-07-20
申请号：US17102982
申请日：2020-11-24
Applicant: DENSO CORPORATION
Inventor： Kanechiyo Terada
Abstract: An ignition control device is provided with an ignition coil including a primary coil and a secondary coil, a main ignition circuit performing a main ignition operation, an energy input circuit that performs an energy input operation for superposing a current having the same polarity to a secondary current, in which a signal generation circuit is provided to generate, based on a main ignition signal that controls the main ignition operation, at least one of an energy input signal controlling the energy input operation and a target secondary current command signal commanding a target secondary current value.
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公开(公告)号：US20210148324A1
公开(公告)日：2021-05-20
申请号：US17099384
申请日：2020-11-16
Applicant: Bradley Sheridan
Inventor： Bradley Sheridan
Abstract: An apparatus having an ignition coil. The ignition coil has a transformer; a housing; a high voltage output; a wiring harness connector; and two or more input terminals. At least one of the two or more input terminals are electrically coupled to the wiring harness connector and electrically isolated from the transformer. The transformer is electrically connected to the wiring harness connector.
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公开(公告)号：US10941745B2
公开(公告)日：2021-03-09
申请号：US15743104
申请日：2016-07-21
Applicant: WALBRO LLC
Inventor： Martin N. Andersson , Cyrus M. Healy
Abstract: In at least some implementations, an auxiliary power supply in an ignition system for a light-duty combustion engine includes a first auxiliary winding and a second auxiliary winding coupled in parallel with the first auxiliary winding such that both windings are arranged to provide power to an auxiliary load. The first auxiliary winding may include a greater number of turns than the second auxiliary winding. A ratio of the number of turns in the first auxiliary winding to the number of turns in the second auxiliary winding may be between 1.5:1 and 10:1, the first auxiliary coil and the second auxiliary coil may have between 50 and 2,000 turns, and the first auxiliary coil and the second auxiliary coil are formed from wire between 25 and 45 gauge.
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Patent Agency Ranking
公开(公告)号：US20210017946A1
公开(公告)日：2021-01-21
申请号：US16496567
申请日：2017-03-30
Applicant: MAHLE ELECTRIC DRIVES JAPAN CORPORATION
Inventor： TAKUMA AYUZAWA , MASAYUKI SUGIYAMA , NAOYA TAKAMURA
Abstract: In an engine ignition method according to the present invention, an ignition coil and an exciter coil are provided in a magneto generator driven by an engine. After charging an ignition capacitor using an output voltage of the exciter coil, the ignition capacitor is discharged through a primary coil of the ignition coil at an ignition timing of the engine, whereby a high voltage induced in a secondary coil of the ignition coil is applied to an ignition plug and a first spark discharge is generated in the ignition plug, and a voltage induced in the secondary coil of the ignition coil accompanied with rotation of the magneto rotor is applied to the ignition plug in a state that insulation across discharge gaps of the ignition plug is broken down due to the first spark discharge, whereby a second spark discharge is produced in the ignition plug.
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公开(公告)号：US10895241B2
公开(公告)日：2021-01-19
申请号：US16301525
申请日：2017-05-30
Inventor： Michael Wollitzer , Gunnar Armbrecht , Martin Fuchs , Peter Awakowicz , Thomas Musch , Sven Gröger , Andre Bergner , Gordon Notzon , Marcel Van Delden
Abstract: An ignition device for igniting an air/fuel mixture in at least one combustion chamber, having an ignition system with electrodes for each combustion chamber, a high-voltage source for generating an electrical high-voltage impulse at an output of the high-voltage source, and a high-frequency voltage source for generating an electrical high-frequency alternating voltage, wherein m ignition systems (10i) are provided with the formula (I) (natural numbers without zero) and m≥2, wherein κ high-frequency voltage sources are provided with the formula (II), and κ
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公开(公告)号：US10818456B2
公开(公告)日：2020-10-27
申请号：US16050647
申请日：2018-07-31
Applicant: Delta Systems, Inc.
Inventor： Robert Louis Ferrante , Raymond P. Kawolics, Jr. , Michelle R. Specht
Abstract: A multi-function key system and method is provided that includes key identification system, a first key, and a second key. The multi-function key system is in communication with an item of power equipment, and comprises first and second sensors for detecting magnetic fields. The first key is configured to interact with the key identification system, the first key comprises a first magnet generating a first magnetic field. The second key is configured to interact with the key identification system. The second key comprises a second magnet generating a second magnetic field. Wherein the first and second sensors differentiate between the first and second key based upon the first and second magnetic fields. The key identification system initiates a first functionality of the power equipment responsive to identifying the first key, and initiates a second functionality of the power equipment responsive to identifying the second key.
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公开(公告)号：US20200032699A1
公开(公告)日：2020-01-30
申请号：US16495910
申请日：2018-03-19
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Cyrus M. Healy , Robby L. Linton
Abstract: In at least some implementations, an ignition system for a combustion engine includes analog circuit components arranged to control ignition events at an engine speed below a first threshold of engine speed and a microprocessor to control ignition events at engine speeds higher than the first threshold. Hence, ignition can be controlled at lower engine cranking speeds to facilitate starting the engine at lower engine rotational speeds.
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公开(公告)号：US10514014B2
公开(公告)日：2019-12-24
申请号：US16026235
申请日：2018-07-03
Applicant: Briggs & Stratton Corporation
Inventor： Robert John Koenen , Jason A. Hansen , Andrew Paskov
Abstract: A system and method for enhancing spark generation in an ignition coil of an internal combustion engine at low rotational speeds of the flywheel. The method and system monitor the rotational speed of the flywheel and, when the rotational speed of the flywheel is below a threshold rotational speed, the system and method supplies voltage pulses to the primary winding. The timing of the voltage pulses supplied to the primary winding are triggered off of voltage transitions in pulses induced in the primary winding upon rotation of the flywheel. Once the internal combustion engine has started, the switching device transitions into a second condition to disconnect the electrical storage device from the primary winding. The spark generation system of the present disclosure allows for starting of an internal combustion engine upon slower initial rotational speeds.
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