Invention Grant
US08801574B2 Method and apparatus for controlling clutch deactivation in a multi-mode powertrain system 有权
用于在多模动力系统中控制离合器停用的方法和装置

Method and apparatus for controlling clutch deactivation in a multi-mode powertrain system
Abstract:
A powertrain system includes an internal combustion engine, a multi-mode transmission having a plurality of torque machines, and a driveline. A method for deactivating a torque transfer clutch of the multi-mode transmission includes imposing prioritized clutch torque constraints to an off-going clutch. The constraints include minimum and maximum long-term desired clutch torque constraints that are superseded by minimum and maximum soft clutch torque constraints that are superseded by minimum and maximum short-term desired clutch torque constraints that are superseded by minimum and maximum hard clutch torque constraints. The off-going clutch is controlled in response to the prioritized clutch torque constraints.
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