Apparatus And Method For Controlling Idle Speed Of Internal Combustion Engine
    21.
    发明申请
    Apparatus And Method For Controlling Idle Speed Of Internal Combustion Engine 有权
    用于控制内燃机空转速度的装置和方法

    公开(公告)号:US20080115762A1

    公开(公告)日:2008-05-22

    申请号:US11661097

    申请日:2005-08-26

    IPC分类号: F02D41/00 F01L1/34 F02D13/00

    摘要: An engine has a variable valve actuation mechanism that varies lift characteristics of an intake valve. An idle speed control apparatus has a control section for controlling an intake air amount of the engine in an idle state for adjusting an actual engine speed to a target engine speed. The control section sets a control amount related to control of the intake air amount in correspondence with the lift characteristics, which are varied by the variable valve actuation mechanism. Accordingly, the engine speed in the idle state is effectively controlled in correspondence with changes of the lift characteristics.

    摘要翻译: 发动机具有改变进气门的升程特性的可变气门致动机构。 怠速控制装置具有控制部,该控制部将用于将实际发动机转速调整为目标发动机转速的怠速状态的发动机的进气量进行控制。 控制部根据由可变气门驱动机构变化的升程特性,设定与进气量的控制有关的控制量。 因此,与升降特性的变化对应地有效地控制空转状态下的发动机转速。

    Intake air amount control apparatus and intake air amount control method for internal combustion engines
    22.
    发明授权
    Intake air amount control apparatus and intake air amount control method for internal combustion engines 有权
    进气量控制装置和内燃机的进气量控制方法

    公开(公告)号:US07066145B2

    公开(公告)日:2006-06-27

    申请号:US10921219

    申请日:2004-08-19

    IPC分类号: F02D11/10 F02M25/07 F01L1/34

    摘要: If a valve timing adjusting mechanism has a problem, an ECU determines whether or not actual valve timing VTa is larger than valve timing advanced angle limit value VTegr. Depending on the determination, the ECU selects a value for target valve operating angle VLt from safety angles including intermediate valve operating angle VLmid and maximum valve operating angle VLmax. Each of the safety angles VLmid, VLmax is a valve operating angle at which engine combustion is stabilized at the current valve timing. With the valve operating angle fixed at the safety angle VLmid or VLmax, a throttle valve controls intake air amount. This prevents the engine combustion from becoming unstable, thus enabling the engine to be operated in an engine safety mode.

    摘要翻译: 如果气门正时调整机构有问题,则ECU判定实际气门正时VTa是否大于气门正时提前角限制值VTegr。 根据判定,ECU从包括中间阀操作角度VLmid和最大阀操作角度VLmax的安全角度选择目标阀操作角度VLt的值。 每个安全角VLmid,VLmax是当前气门正时发动机燃烧稳定的气门操作角度。 当阀门操作角度固定在安全角度VLmid或VLmax时,节流阀控制进气量。 这防止发动机燃烧变得不稳定,从而使得发动机能够在发动机安全模式下操作。