Patent ID: 8126604

Claim:
A method of determining output torque constraints for a powertrain having a plurality of components, including an engine, a first motor, a battery, and a first torque transmitting mechanism, and comprising: monitoring individual component limits, including a first motor limit, a first torque transmitting mechanism limit, and a battery power limit, wherein each of the individual component limits includes a minimum and a maximum individual limit; determining whether each of the individual component limits can be satisfied by selecting a first torque value; setting an output torque constraint by selecting the first torque value if the first torque value satisfies each of the individual component limits; selecting a second torque value if the first torque value does not satisfy each of the individual component limits, wherein selecting the second torque value includes following priorities of: satisfying the first motor limit, then, if possible, satisfying the first torque transmitting mechanism limit, and then, if possible, satisfying the battery power limit; and setting the output torque constraint to the second torque value.