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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：US20210134524A1
公开(公告)日：2021-05-06
申请号：US16605024
申请日：2018-04-20
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Cyrus M. Healy , Gerald J. LaMarr, JR.
IPC: H01F38/12 , H01F27/26 , H01F27/245
Abstract: In at least some implementations, a lamination stack includes a plurality of plates coupled together, each plate including at least one leg that collectively define a leg of the stack, with the leg of the stack arranged so that a wire coil may be arranged on the leg of the stack, and wherein the leg of the stack includes a location feature arranged to facilitate location of the stack relative to an adjacent component. In at least some implementations, the location feature may be integrally formed with at least one of the plates, and may be defined by a projection extending from a free end of at least one leg of the stack.
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公开(公告)号：US20210075197A1
公开(公告)日：2021-03-11
申请号：US16766434
申请日：2018-11-30
Applicant: Walbro LLC
Inventor： Cyrus M. Healy , Eric L. King
Abstract: In at least some implementations, a coupler for a spark plug includes a body formed from an electrically conductive material and including a first connecting portion defining a first cavity, and a second connecting portion defining a second cavity spaced from the first cavity, and the body includes an intermediate portion physically and electrically coupling the first connection portion and the second connecting portion. In at least some implementations, the first connecting portion is formed from a wire coiled to define the first cavity within the coil. In at least some implementations, the second connecting portion is formed from a wire coiled to define the second cavity within the coil.
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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：US10677177B2
公开(公告)日：2020-06-09
申请号：US16437142
申请日：2019-06-11
Applicant: Walbro LLC
Inventor： Takashi Abei , Martin N. Andersson , Cyrus M. Healy
Abstract: At least some implementations of a method of distinguishing between two loads being driven by an engine, includes the steps of determining engine speed at defined intervals, comparing a second engine speed against a previously determined first engine speed, determining if the second engine speed fits an expected pattern of engine speeds, and counting either the number of incidents where the second engine speed does not fit the expected pattern, or the number of incidents where the second engine speed does fit the expected pattern, or some combination of these two. A method of determining if an engine is operating at least near a lean limit of its air to fuel ratio is also disclosed.
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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：US20190293006A1
公开(公告)日：2019-09-26
申请号：US16437142
申请日：2019-06-11
Applicant: Walbro LLC
Inventor： Takashi Abei , Martin N. Andersson , Cyrus M. Healy
Abstract: At least some implementations of a method of distinguishing between two loads being driven by an engine, includes the steps of determining engine speed at defined intervals, comparing a second engine speed against a previously determined first engine speed, determining if the second engine speed fits an expected pattern of engine speeds, and counting either the number of incidents where the second engine speed does not fit the expected pattern, or the number of incidents where the second engine speed does fit the expected pattern, or some combination of these two. A method of determining if an engine is operating at least near a lean limit of its air to fuel ratio is also disclosed.
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公开(公告)号：US20190242341A1
公开(公告)日：2019-08-08
申请号：US16329928
申请日：2017-09-01
Applicant: Walbro LLC
Inventor： Eric D. Anderson , Travis P. Baur , Elton J. Fisch , Cyrus M. Healy , Kevin L. Israelson , Gerald J. LaMarr, Jr. , Robby L. Linton , Edward J. Talaski
CPC classification number: F02M37/20 , F02M37/0029 , F02M37/0052 , F02M37/025 , F02M37/10 , F02M37/18
Abstract: In at least some implementations, a fuel supply module includes a reservoir and a fuel pump carried by the reservoir. The reservoir may include a body and a lid that define an internal volume to contain a supply of fuel, and the reservoir may include an inlet through which fuel enters the internal volume and an outlet from which fuel is discharged from the fuel supply module. The fuel pump is carried by the reservoir and has a first inlet communicating with the internal volume to take fuel into the fuel pump from the internal volume and a second inlet spaced above the first inlet relative to the direction of the force of gravity to take fluid or vapors into the fuel pump from the internal volume. The fuel pump includes an outlet from which fluid is discharged for delivery to an engine through the reservoir outlet.
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公开(公告)号：US20190040810A1
公开(公告)日：2019-02-07
申请号：US16072309
申请日：2017-01-19
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Cyrus M. Healy , Gerald J. LaMarr, Jr. , George M. Pattullo
Abstract: A kill switch assembly for an internal combustion engine may include a housing, a first terminal carried by the housing and connected to a ground wire, a second terminal carried by the housing and connected to an engine microcontroller communication wire, and a kill switch. The kill switch may be carried by the housing, electrically connected to the first and second terminals, and manually operable by an operator to change the state of the electric switch to provide an engine stop signal to the engine microcontroller. The assembly may also include an electronic circuit carried by the housing, connected to the first and second terminals, and through the wires communicating with the engine microcontroller.
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