Method and apparatus for soft costing input speed and output speed in mode and fixed gear as function of system temperatures for cold and hot operation for a hybrid powertrain system

摘要

Methods and systems for manipulating inputs relating to transmission shifting events in a hybrid-engine powered vehicle equipped with an electro-mechanical hybrid transmission include sets of preferability factors inputted from engine sensors are combined in a microprocessor or computer with other preferability factors generated during engine and vehicle operation to provide an output for a transmission control module, which may execute an operating range or engine state change. Desirable input speeds for a transmission are determined by defining minimum input speeds for each potential transmission operating range state, and ascribing biasing costs to potential transmission input speeds which are slower than the minimum input speeds defined for each potential transmission operating range state. A single transmission input speed is selected and preferability factors are determined, which are preferentially weighted to enable selective commandment of changes in the transmission operating range state and engine state.