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公开(公告)号：US11773803B2
公开(公告)日：2023-10-03
申请号：US17780724
申请日：2020-12-02
Applicant: Walbro LLC
Inventor： Takashi Abei , Tatsuya Chiba , Mark S. Swanson
CPC classification number: F02D41/34 , F02D41/1475 , F02D41/2422 , F02D2200/021 , F02D2200/0404 , F02D2200/0406 , F02D2200/0602 , F02D2200/101
Abstract: In at least some implementations, a method of controlling fuel injection events, includes determining at least one engine operating condition, determining timing of a desired pressure in an engine intake chamber or at the outlet of a fuel injector, and initiating a fuel injection event as a function of the at least one engine operating condition and the desired pressure. The fuel injection event is initiated prior to the desired pressure occurring and wherein the fuel injection event occurs for a duration such that the fuel injection event terminates after the desired pressure occurs.
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公开(公告)号：US10473042B2
公开(公告)日：2019-11-12
申请号：US15743857
申请日：2016-07-22
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：US20210010449A1
公开(公告)日：2021-01-14
申请号：US16977236
申请日：2019-03-14
Applicant: Walbro LLC
Inventor： Takashi Abei , Shunya Nakamura , Dairoku Suzuki , Jun Takano , Yuki Tanaka , Kazunori Tsubakino , Makoto Waku
Abstract: In at least some implementations, a method of controlling spark events in an engine includes determining for at least two engine revolutions in a four-stroke engine at least one characteristic of the primary coil voltage for a spark event, determining, based upon the characteristic of the primary coil voltage, which of the spark events is associated with a compression phase and which of the spark events is associated with an exhaust phase of engine operation, and providing spark events in subsequent engine revolutions that are associated with the compression phase of engine operation but not in revolutions associated with the exhaust phase of engine operation. In at least some implementations, the characteristic is the duration of the spark event as determined by changes in the primary coil voltage, and the characteristic may be that the duration that the primary coil voltage is above a threshold voltage.
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公开(公告)号：US20170314490A1
公开(公告)日：2017-11-02
申请号：US15520578
申请日：2016-09-30
Applicant: WALBRO LLC
Inventor： Martin N. Andersson , Mark S. Swanson , Takashi Abei , Cyrus M. Healy
CPC classification number: F02D41/1454 , F02D31/002 , F02D31/007 , F02D31/008 , F02D37/02 , F02D41/26 , F02D2200/101 , F02P5/045 , F02P5/1508 , Y02T10/46
Abstract: A method and apparatus controlling the fuel-to-air ratio of a fuel and air mixture supplied to an operating engine includes the steps of determining a first engine speed before enleanment of the mixture, determining a second engine speed near or at the end of a period of enleanment of the mixture, and after ending the enleanment, determining whether the engine speed recovers within a predetermined range of the first engine speed and if so determining a delta speed difference between the first and second speeds and using this delta speed difference as a factor in determining a change in the fuel-to-air ratio of the fuel mixture supplied to the engine.
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公开(公告)号：US20230407809A1
公开(公告)日：2023-12-21
申请号：US18242455
申请日：2023-09-05
Applicant: Walbro LLC
Inventor： Takashi Abei , Tatsuya Chiba , Mark S. Swanson
CPC classification number: F02D41/34 , F02D41/1475 , F02D41/2422 , F02D2200/021 , F02D2200/0404 , F02D2200/0406 , F02D2200/0602 , F02D2200/101
Abstract: In at least some implementations, a method of controlling fuel injection events, includes determining at least one engine operating condition, determining timing of a desired pressure in an engine intake chamber or at the outlet of a fuel injector, and initiating a fuel injection event as a function of the at least one engine operating condition and the desired pressure. The fuel injection event is initiated prior to the desired pressure occurring and wherein the fuel injection event occurs for a duration such that the fuel injection event terminates after the desired pressure occurs.
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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：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：US12078121B2
公开(公告)日：2024-09-03
申请号：US18242455
申请日：2023-09-05
Applicant: Walbro LLC
Inventor： Takashi Abei , Tatsuya Chiba , Mark S. Swanson
CPC classification number: F02D41/34 , F02D41/1475 , F02D41/2422 , F02D2200/021 , F02D2200/0404 , F02D2200/0406 , F02D2200/0602 , F02D2200/101
Abstract: In at least some implementations, a method of controlling fuel injection events, includes determining at least one engine operating condition, determining timing of a desired pressure in an engine intake chamber or at the outlet of a fuel injector, and initiating a fuel injection event as a function of the at least one engine operating condition and the desired pressure. The fuel injection event is initiated prior to the desired pressure occurring and wherein the fuel injection event occurs for a duration such that the fuel injection event terminates after the desired pressure occurs.
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公开(公告)号：US20220099060A1
公开(公告)日：2022-03-31
申请号：US17546773
申请日：2021-12-09
Applicant: Walbro LLC
Inventor： Takashi Abei , Katsuaki Hamataka , Takashi Horikawa , Tomoya Kawada , Dairoku Suzuki , Jun Takano
Abstract: In at least some implementations, a fuel metering valve, includes a bobbin defining a passage and having one or more voids in the surface of the bobbin that defines the passage, aa wire coil around the bobbin and an armature. The armature is received within the passage in the bobbin and movable relative to the bobbin from a first position to a second position when electricity is supplied to the wire coil.
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公开(公告)号：US20210088002A1
公开(公告)日：2021-03-25
申请号：US16634276
申请日：2018-07-27
Applicant: Walbro LLC
Inventor： Takashi Abei , Katsuaki Hamataka , Taketoshi Hirama , Takashi Horikawa , Tomoya Kawada , Nobuyuki Kuroki , Shunya Nakamura , Kazunori Tsubakino , Makoto Waku
Abstract: In at least some implementations, a charge forming system for a combustion engine includes a first fuel supply device having a first passage from which fuel is discharged for delivery to the engine and a second fuel supply device having a second passage from which fuel is discharged for delivery to the engine. The first passage communicates with the second passage so that the fuel in the first passage is combined with the fuel in the second passage.
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