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公开(公告)号：US20100012084A1
公开(公告)日：2010-01-21
申请号：US12173849
申请日：2008-07-16
CPC分类号： F02P5/1504 , F02D31/006 , F02D41/045 , F02D2400/06 , F02P3/06 , F02P5/1506 , Y02T10/46
摘要： A method and system for controlling a light-duty combustion engine and, more particularly, a method and system that use an engine speed governor to limit the engine speed to a level that is less than a clutch-in speed of a centrifugal clutch. If it is determined that an operator is attempting to throttle or accelerate the engine, the engine speed governor is disengaged so that normal operation can commence.
摘要翻译： 更具体地，涉及一种使用发动机调速器将发动机转速限制在小于离心式离合器的离合器速度的水平的方法和系统。 如果确定操作者试图节流或加速发动机，则发动机调速器被分离，从而可以开始正常操作。
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公开(公告)号：US07735471B2
公开(公告)日：2010-06-15
申请号：US12173849
申请日：2008-07-16
CPC分类号： F02P5/1504 , F02D31/006 , F02D41/045 , F02D2400/06 , F02P3/06 , F02P5/1506 , Y02T10/46
摘要： A method and system for controlling a light-duty combustion engine and, more particularly, a method and system that use an engine speed governor to limit the engine speed to a level that is less than a clutch-in speed of a centrifugal clutch. If it is determined that an operator is attempting to throttle or accelerate the engine, the engine speed governor is disengaged so that normal operation can commence.
摘要翻译： 更具体地，涉及一种使用发动机调速器将发动机转速限制在小于离心式离合器的离合器速度的水平的方法和系统。 如果确定操作者试图节流或加速发动机，则发动机调速器被分离，从而可以开始正常操作。
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公开(公告)号：US07448358B2
公开(公告)日：2008-11-11
申请号：US11732311
申请日：2007-04-03
CPC分类号： F02P3/083 , F02D41/08 , F02D41/307 , F02P1/086 , F02P5/06 , F02P5/1504 , F02P5/1506 , F02P5/1508 , F02P11/025 , Y02T10/46
摘要： A control system for a low cost, light duty combustion engine, where the control system generally utilizes an engine speed input signal and independent operating sequences to determine a desired ignition timing. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence, a Warm Up sequence, a Normal Mode sequence, an Acceleration sequence, a Come Down sequence, a Recovery Bump sequence, and a Part Throttle sequence. During idling conditions, the Normal Mode sequence uses rapid changes in the ignition timing to maintain the engine speed in a small, idle engine speed range. By utilizing these operational sequences, the control system improves the performance of a low cost, light duty engine across a wide array of conditions.
摘要翻译： 一种用于低成本，轻型内燃机的控制系统，其中控制系统通常利用发动机速度输入信号和独立的操作顺序来确定期望的点火正时。 有几个独立的操作顺序，每个操作顺序都设计为在某些条件下优化控制发动机。 这些操作序列包括起始序列，预热序列，正常模式序列，加速序列，下降序列，恢复凸起序列和部分节气门序列。 在怠速条件下，正常模式序列使用点火正时的快速变化，以将发动机转速保持在小的怠速发动机转速范围内。 通过利用这些操作顺序，控制系统在各种条件下提高了低成本，轻型发动机的性能。
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公开(公告)号：US07136742B2
公开(公告)日：2006-11-14
申请号：US10955108
申请日：2004-09-30
IPC分类号： F02P9/00
CPC分类号： F02D41/042 , F02D2400/06 , F02P1/086 , F02P3/083 , F02P5/1504 , F02P11/02 , F02P11/025 , Y02T10/46
摘要： A kill-switch control circuit for use with a light-duty combustion engine determines whether to execute a controlled shut down method or an immediate shut down method in response to kill-switch activation. The selection of a shut down method is made, at least in part, by using engine speed readings and by counting engine revolutions. The controlled shut down method utilizes ignition timing delay and/or spark ratio techniques to quickly bring the engine to a stop, yet does so in a controlled manner that avoids backfiring and other undesirable effects. Conversely, the immediate shut down method abruptly stops sending a current to the spark plug.
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5.发明授权Apparatus and method for limiting excessive engine speeds in a light-duty combustion engine 有权限制轻型内燃机中发动机转速过快的装置和方法公开(公告)号：US07249586B2
公开(公告)日：2007-07-31
申请号：US11295199
申请日：2005-12-06
CPC分类号： F02P9/005 , F02D2400/06 , F02P5/1502 , Y02T10/46
摘要： A controlled slow down apparatus and method for use in the event that a light-duty combustion engine has entered a state of excessive speeds or auto-ignition. The controlled slow down method is preferably initiated when the engine speed exceeds an activation speed for a predetermined number of engine revolutions. Once initiated, the controlled slow down method uses a combination of ignition timing and spark ratio manipulations in order to disrupt the auto-ignition conditions and slow down the engine in a controlled manner. Preferably, the controlled slow down method is only one part of an overall ignition control method, and can be incorporated within or utilized by one of a number of different ignition timing methods known in the art.
摘要翻译： 在轻型内燃机进入过速或自动点火的状态下使用的受控的减速装置和方法。 优选地，当发动机转速超过预定数量的发动机转数的启动速度时，开始控制减速方法。 一旦启动，受控的减速方法使用点火正时和火花比操作的组合，以便以受控的方式中断自动点火条件和减速发动机。 优选地，控制减速方法仅仅是整体点火控制方法的一部分，并且可以并入本领域已知的多种不同的点火定时方法之一或由其中的一种使用。
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公开(公告)号：US07198028B2
公开(公告)日：2007-04-03
申请号：US11211835
申请日：2005-08-25
IPC分类号： F02P5/145
CPC分类号： F02P3/083 , F02D41/08 , F02D41/307 , F02P1/086 , F02P5/06 , F02P5/1504 , F02P5/1506 , F02P5/1508 , F02P11/025 , Y02T10/46
摘要： A control system for a low cost, light duty combustion engine, where the control system generally utilizes an engine speed input signal and independent operating sequences to determine a desired ignition timing. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence, a Warm Up sequence, a Normal Mode sequence, an Acceleration sequence, a Come Down sequence, a Recovery Bump sequence, and a Part Throttle sequence. During idling conditions, the Normal Mode sequence uses rapid changes in the ignition timing to maintain the engine speed in a small, idle engine speed range. By utilizing these operational sequences, the control system improves the performance of a low cost, light duty engine across a wide array of conditions.
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公开(公告)号：US07040282B2
公开(公告)日：2006-05-09
申请号：US10955707
申请日：2004-09-30
IPC分类号： F02P9/00
CPC分类号： F02P9/005 , F02D2400/06 , F02P1/086 , F02P3/083 , F02P11/025
摘要： A method and system for operating an engine wherein ignition of the engine is activated according to a predetermined timing schedule that references engine speed, and the ignition is suppressed above a predetermined engine speed threshold to allow engine speed to fall below the predetermined engine speed threshold. Thereafter, ignition is reactivated according to timing that is retarded relative to the predetermined timing schedule for a predetermined number of engine revolutions substantially when the engine speed has fallen below the predetermined engine speed threshold, thereby mitigating undesirable spikes in combustion chamber maximum pressure.
摘要翻译： 一种用于操作发动机的方法和系统，其中根据引用发动机转速的预定时间表激活发动机的点火，并且将点火抑制在高于预定发动机速度阈值以允许发动机转速降至预定发动机转速阈值以下。 此后，基本上当发动机转速已经下降到预定的发动机转速阈值以下时，根据预定次数的发动机转速相对于预定时间表延迟的定时重新起动点火，由此减轻了燃烧室最大压力中不期望的尖峰。
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公开(公告)号：US07000595B2
公开(公告)日：2006-02-21
申请号：US10765415
申请日：2004-01-27
IPC分类号： F02P5/00
CPC分类号： F02D37/02 , F02D35/0061 , F02D41/2422 , F02D2400/06 , F02P1/086 , F02P5/045 , F02P5/1504 , F02P5/1506 , F02P11/025 , Y02T10/46
摘要： A control system for a low cost, light duty combustion engine, where the control system generally utilizes engine speed and/or temperature input signals and independent operating sequences to determine a desired ignition timing and air-to-fuel ratio for a combustible mixture. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence that commences after the engine is initially turned on, a Warm Up sequence which follows the Cranking sequence, a Normal Mode sequence for typical operating conditions, an Acceleration sequence for certain increases in engine speed, a Come Down sequence for when a sufficient engine speed is followed by a certain decrease in speed, and a Recovery Bump sequence for when the engine speed dips below a predetermined level.
摘要翻译： 一种用于低成本，轻型内燃机的控制系统，其中控制系统通常利用发动机速度和/或温度输入信号和独立的操作顺序来确定可燃混合物的期望的点火正时和空燃比。 有几个独立的操作顺序，每个操作顺序都设计为在某些条件下优化控制发动机。 这些操作序列包括在引擎最初开启之后开始的起始序列，遵循起始序列的预热序列，典型操作条件的正常模式序列，发动机速度某些增加的加速序列，下降序列 因为当发动机速度足够的速度跟随着一定的速度降低时，以及当发动机转速下降到预定水平以下时的恢复凸起顺序。
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公开(公告)号：US07380772B1
公开(公告)日：2008-06-03
申请号：US11591068
申请日：2006-11-01
IPC分类号： F02M3/12
CPC分类号： F02M3/12 , Y10S261/01
摘要： A charge forming device includes a body with a fuel and air mixing passage, a bypass passage that communicates with the fuel and air mixing passage, a throttle valve and a choke valve. The throttle valve is movable between idle and wide open positions and operable to control at least in part the fluid flow through the fuel and air mixing passage. The choke valve is movable between an open position permitting a substantially free flow of air into the fuel and air mixing passage and a closed position at least substantially restricting air flow into the fuel and air mixing passage. A bypass valve is movable between an open position and a closed position to selectively permit fluid flow through the bypass passage. The bypass valve is movable toward its open position when the throttle valve is displaced at least a threshold amount away from its idle position.
摘要翻译： 电荷形成装置包括具有燃料和空气混合通道的主体，与燃料和空气混合通道连通的旁通通道，节流阀和阻流阀。 节流阀可在空闲和大开的位置之间移动，并可操作以至少部分地控制通过燃料和空气混合通道的流体流动。 阻塞阀可以在允许空气进入燃料和空气混合通道的基本上自由流动的打开位置和至少基本上限制进入燃料和空气混合通道的空气的关闭位置之间移动。 旁通阀可在打开位置和关闭位置之间移动，以选择性地允许流体流过旁路通道。 当节流阀从其空转位置移动至少一个阈值量时，旁通阀可朝其打开位置移动。
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公开(公告)号：US08453998B2
公开(公告)日：2013-06-04
申请号：US12858116
申请日：2010-08-17
IPC分类号： F02M23/03
CPC分类号： F02D9/1065 , F02D2009/0205 , F02D2009/0257
摘要： In one form, a carburetor may include an air passage, a fuel and air mixing passage, a throttle valve, an air valve and a lost motion coupler interconnecting the air valve and the throttle valve. The throttle valve may be disposed in communication with the fuel and air mixing passage and moveable between an idle position and an open position permitting an at least somewhat less restricted fluid flow therethrough than when the throttle valve is in the idle position. The air valve may be disposed in communication with the air passage, and moveable between closed and fully open positions to control air flow through the air passage. The lost motion coupler may permit a limited movement of the throttle valve away from its idle position without a corresponding movement of the air valve, and may also permit movement of the air valve along with the throttle valve after said limited movement and until the air valve is fully open, and may also permit further movement of the throttle valve to its wide open position after the air valve is fully open.
摘要翻译： 在一种形式中，化油器可以包括空气通道，燃料和空气混合通道，节流阀，空气阀和将空气阀和节流阀互连的迷失运动联接器。 节流阀可以设置成与燃料和空气混合通道连通，并且在空转位置和打开位置之间运动，允许至少稍微受限制的流体流过其中，而不是当节气门处于空闲位置时。 空气阀可以设置成与空气通道连通，并且可在闭合位置和完全打开位置之间移动，以控制通过空气通道的空气流动。 空转联动器可以允许节流阀有限的运动远离其空转位置而没有空气阀的相应运动，并且还可以允许空气阀在所述有限运动之后与节流阀一起运动，直到空气阀 完全打开，并且还可以允许在空气阀完全打开之后节流阀进一步移动到其大的打开位置。
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