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    • 1. 发明授权
    • Engine- and vehicle- speed-based engine cooling fan control
    • 基于发动机和车速的发动机冷却风扇控制
    • US06745727B1
    • 2004-06-08
    • US10463157
    • 2003-06-16
    • Thomas M. KramerJeffery D. JenksJames T. Beaucaire
    • Thomas M. KramerJeffery D. JenksJames T. Beaucaire
    • F01P702
    • F01P7/08F01P2023/00F01P2025/64F01P2025/66
    • An engine cooling fan (18) is coupled to an engine (14) of a truck (10) through an electric-operated clutch (20) for selectively placing the cooling fan in driven and non-driven relationship with the engine. A control system (22) processes certain data for indicating when engine speed (N) exceeds a reference engine speed (EFC_N_LMX), for indicating when vehicle speed (VSS) exceeds a reference vehicle speed EFC_VSS_LMX), and for indicating when rate of change of engine speed exceeds a selected rate of change of engine speed. The clutch places the fan in non-driven relationship with the engine when the processing discloses vehicle speed exceeding the reference vehicle speed coincident with the processing of the data disclosing either engine speed exceeding the reference engine speed or rate of change of engine speed exceeding the selected rate of change of engine speed.
    • 发动机冷却风扇(18)通过电动离合器(20)联接到卡车(10)的发动机(14),用于选择性地将冷却风扇置于与发动机的驱动和非驱动关系中。 控制系统(22)处理某些数据,用于指示何时发动机转速(N)超过基准发动机转速(EFC_N_LMX),以指示何时车速(VSS)超过参考车速EFC_VSS_LMX),并且用于指示何时改变速率 发动机转速超过选定的发动机转速变化率。 当处理公开车辆速度超过参考车辆速度时,离合器将风扇与发动机非驱动关系相结合,该数据与显示发动机转速超过参考发动机转速或发动机转速变化率的数据的处理相一致 发动机转速变化率。