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    • 4. 发明公开
    • METHOD AND SYSTEM FOR ENGINE CONTROL
    • VERFAHREN UND SYSTEM ZUR MOTORREGELUNG
    • EP0990217A4
    • 2002-09-04
    • EP98921012
    • 1998-05-06
    • DETROIT DIESEL CORP
    • AVERY RICHARD MICHAEL JRSALTER DOUGLAS WRIGHT
    • F02D45/00F02D9/06F02D13/04F02D41/04G06F19/00B60K6/00B60K8/00B60K25/10F02B75/06F02B77/00G06G7/70
    • F02D9/06F02D41/042
    • A system and method for reducing cab vibration during engine shutdown in a vehicle (10), including an ICE (12), an engine brake (14), and an electronic control unit (20) for controlling the engine and the engine brake, includes logic for determining when a shutdown condition is occurring, and logic for generating a control signal to activate the engine brake during the engine shutdown. A plurality of sensors (16), including engine speed sensor (18) connected to the controller (20) via input ports (22). The controller includes a microprocessor (24) connected with memory (26) via bus (28). The activation of the engine brake is performed only after the engine speed has fallen below a predetermined level. The system and method also automatically deactivates the engine at a preselected time, such as when the engine speed falls below a second predetermined level, to ensure that the engine brake is not activated upon restarting the engine.
    • 包括用于控制发动机和发动机制动的内燃机,发动机制动器和电子控制单元的车辆的发动机关闭期间减少驾驶室振动的系统和方法包括用于确定何时发生停机的逻辑, 以及用于在发动机关闭期间产生控制信号以激活发动机制动的逻辑。 在一个实施例中,仅在发动机转速已经下降到预定水平之前执行启动发动机制动的步骤。 该系统和方法还优选地包括在预先选择的时间(例如,当发动机RPM低于第二阈值时)自动停用发动机制动器,以确保在重新启动发动机时发动机制动不被激活。