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    CONTROL OF A/F RATIO AT CUT-OUT SPEED
    3.
    发明申请
    CONTROL OF A/F RATIO AT CUT-OUT SPEED 有权
    A / F比率在切出速度下的控制

    公开(公告)号：US20130332049A1

    公开(公告)日：2013-12-12

    申请号：US14001248

    申请日：2011-02-23

    Applicant: Mikael Larsson

    Inventor： Mikael Larsson

    IPC: F02D41/04

    CPC classification number: F02D41/04 ,  F02D31/007 ,  F02D31/009 ,  F02D35/0053 ,  F02D41/1497 ,  F02D41/2454 ,  F02D2200/1012 ,  F02D2700/02 ,  F02P9/005

    Abstract: The invention concerns a method for controlling at least one of a fuel supply and an air supply to an internal combustion engine (1), in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level. Moreover, the method is activated at a speed close to a cut-out speed threshold (52) where the engine speed will fluctuate around the threshold (52) and the method comprises the steps of : receiving engine speed data on rotational speed from the engine (1), briefly changing the A/F ratio, comparing engine speed data that are essentially unaffected by the brief change to engine speed data that are affected by the brief change to evaluate the impact on the engine speed fluctuation resulting from the brief change, adjusting the A/F ratio in the same direction as the brief change if the engine speed data affected by the brief change indicates an increase in acceleration after combustion/s, and adjusting the A/F ratio in the opposite direction to the brief change if the engine speed data affected by the brief change indicates a decrease in acceleration after combustion/s.

    Abstract translation: 本发明涉及一种用于控制在其燃料供给部分中的内燃机（1）的燃料供应和空气供应中的至少一个的方法，使得A / F比自动调节到期望水平。 此外，该方法以接近切断速度阈值（52）的速度被激活，其中发动机速度将围绕阈值波动（52），并且该方法包括以下步骤：从发动机接收关于转速的发动机速度数据 （1），简要地改变A / F比，将基本上不受短暂变化影响的发动机转速数据与受短暂变化影响的发动机转速数据进行比较，以评估由短暂变化引起的发动机转速波动的影响， 如果受短暂变化影响的发动机转速数据表示燃烧/ s后的加速度增加，并将A / F比率与短暂变化相反的方向调整A / F比，则与短暂变化相同的方向调整A / F比 受短暂影响的发动机转速数据表明燃烧后的加速度降低。

    Engine-Driven Working Machine
    6.
    发明申请
    Engine-Driven Working Machine 审中-公开

    公开(公告)号：US20170101943A1

    公开(公告)日：2017-04-13

    申请号：US15287764

    申请日：2016-10-07

    Applicant: YAMABIKO CORPORATION

    Inventor： Minoru Kuroiwa ,  Ryota Yokouchi

    IPC: F02D31/00 ,  B27B17/08 ,  B25F5/00 ,  F02B63/02 ,  F02N15/10

    CPC classification number: F02D31/002 ,  B25F5/001 ,  B27B17/08 ,  F02B63/02 ,  F02D31/001 ,  F02D41/0097 ,  F02D41/06 ,  F02D2400/06 ,  F02D2700/02 ,  F02N15/10

    Abstract: To satisfy both a request for ensuring worker's safety at the engine start and a worker's request for promptly starting a work, on the premise of a working machine including an engine RPM suppression mode.A working machine (1) has a centrifugal clutch (6). The engine RPM suppression mode is executed at the start of an internal combustion engine (2). With the RPM suppression mode, the RPM of the internal combustion engine (2) is controlled not to exceed a clutch-in RPM. The working machine (1) has a mode cancelling means (S5) canceling the engine RPM suppression mode when a predetermined mode cancelation condition for cancelling the engine RPM suppression mode is satisfied, and a cancellation condition changing means (S2) changing the mode cancelation condition depending on a change in an engine operational state and/or an environment.

    Control of A/F ratio at cut-out speed
    7.
    发明授权
    Control of A/F ratio at cut-out speed 有权
    控制切割速度下的A / F比

    公开(公告)号：US09255535B2

    公开(公告)日：2016-02-09

    申请号：US14001248

    申请日：2011-02-23

    Applicant: Mikael Larsson

    Inventor： Mikael Larsson

    IPC: F02D41/04 ,  F02D31/00 ,  F02D41/14 ,  F02P9/00

    CPC classification number: F02D41/04 ,  F02D31/007 ,  F02D31/009 ,  F02D35/0053 ,  F02D41/1497 ,  F02D41/2454 ,  F02D2200/1012 ,  F02D2700/02 ,  F02P9/005

    Abstract: The invention concerns a method for controlling at least one of a fuel supply and an air supply to an internal combustion engine (1), in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level. Moreover, the method is activated at a speed close to a cut-out speed threshold (52) where the engine speed will fluctuate around the threshold (52) and the method comprises the steps of: receiving engine speed data on rotational speed from the engine (1), briefly changing the A/F ratio, comparing engine speed data that are essentially unaffected by the brief change to engine speed data that are affected by the brief change to evaluate the impact on the engine speed fluctuation resulting from the brief change, adjusting the A/F ratio in the same direction as the brief change if the engine speed data affected by the brief change indicates an increase in acceleration after combustion/s, and adjusting the A/F ratio in the opposite direction to the brief change if the engine speed data affected by the brief change indicates a decrease in acceleration after combustion/s.

    Abstract translation: 本发明涉及一种用于控制在其燃料供给部分中的内燃机（1）的燃料供应和空气供应中的至少一个的方法，使得A / F比自动调节到期望水平。 此外，该方法以接近切断速度阈值（52）的速度被激活，其中发动机速度将围绕阈值波动（52），并且该方法包括以下步骤：从发动机接收关于转速的发动机速度数据 （1），简要地改变A / F比，将基本上不受短暂变化影响的发动机转速数据与受短暂变化影响的发动机转速数据进行比较，以评估由短暂变化引起的发动机转速波动的影响， 如果受短暂变化影响的发动机转速数据表示燃烧/ s后的加速度增加，并将A / F比率与短暂变化相反的方向调整A / F比，则与短暂变化相同的方向调整A / F比 受短暂影响的发动机转速数据表明燃烧后的加速度降低。

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