Invention Grant
US08522943B2 Electromagnetically controlled clutch assembly and control method for the same 有权
电磁控制离合器总成及控制方法相同

Electromagnetically controlled clutch assembly and control method for the same
Abstract:
An electromagnetic (EM) clutch assembly includes input and output discs, a plunger, a control solenoid, and a controller. The input disc is connected to a rotatable input member, and defines an input face having a mechanical feature. The output disc is connected to a rotatable output member, and includes a bore wall defining a bore. The plunger is positioned at least partially within the bore. The controller transmits a time-varying electrical control signal to the solenoid to thereby resonate the plunger toward the input disc, and transmits a steady-state electrical control signal to capture the plunger in an engaged position. Rotation of the discs is controlled until the plunger encounters the mechanical feature, thereby placing the assembly in an engaged state. A vehicle having a transmission and the EM clutch assembly is also disclosed, as is a method for controlling the clutch assembly via the electrical control signals.
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