CONTROL ARCHITECTURE AND METHOD FOR TWO-DIMENSIONAL OPTIMIZATION OF INPUT TORQUE AND MOTOR TORQUE IN FIXED GEAR FOR A HYBRID POWERTRAIN SYSTEM
First Claim
1. Method for operating a powertrain comprising an internal combustion engine and first and second electrical machines and an electromechanical transmission selectively operative to transmit torque therebetween, the method comprising:
- determining a range of permissible input torques and a range of permissible motor torques from the first electrical machine;
determining a plurality of costs; and
,identifying a preferred input torque and a preferred motor torque from the first electrical machine based upon the plurality of costs.
12 Assignments
0 Petitions
Accused Products
Abstract
There is provided a control system for a powertrain system including an electromechanical transmission that is selectively operative in a plurality of fixed gear modes and continuously variable modes. The control system is adapted to identify preferred operating conditions for operating the powertrain in a fixed gear operating range state. The method comprises determining a range of permissible input torques and motor torques input from a first electrical machine to the transmission, and determining a plurality of motor torques input from a second electrical machines based thereupon. Costs are determined, based upon the engine inputs and the motor torques for the first and second electrical machines determined thereupon. A preferred input torque input and a preferred motor torque input is identified based upon the determined costs.
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Citations
20 Claims
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1. Method for operating a powertrain comprising an internal combustion engine and first and second electrical machines and an electromechanical transmission selectively operative to transmit torque therebetween, the method comprising:
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determining a range of permissible input torques and a range of permissible motor torques from the first electrical machine; determining a plurality of costs; and
,identifying a preferred input torque and a preferred motor torque from the first electrical machine based upon the plurality of costs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Method to identify preferred operating conditions for operating a powertrain in a fixed gear operating range state to achieve an operator torque request the powertrain comprising an internal combustion engine and first and second electrical machines and an electromechanical transmission selectively operative to transmit torque therebetween, the method comprising:
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determining a range of permissible input torques and a range of permissible motor torques from the first electrical machine; determining a plurality of costs, each cost based upon selected permissible input torques and selected permissible machine torques from the first electrical machine; and
,identifying a preferred input torque and a preferred motor torque from the first electrical machine based upon the plurality of costs. - View Dependent Claims (13, 14, 15, 16)
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17. Article of manufacture, comprising a storage medium having a computer program encoded therein for effecting a method for operating a powertrain in a fixed gear mode operating range state the powertrain comprising an internal combustion engine and first and second electrical machines and an electromechanical transmission selectively operative to transmit torque therebetween to meet an output torque request, the program comprising:
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code to determine a range of permissible input torques and a range of permissible machine torques from the first electrical machine; code to determine a plurality of costs; and
,code to identify a preferred input torque and a preferred motor torque from the first electrical machine based upon the plurality of costs. - View Dependent Claims (18)
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19. Apparatus, comprising:
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a distributed control module architecture comprising;
a plurality of control modules operatively connected to a powertrain comprising an internal combustion engine and first and second electrical machines and an electro-mechanical transmission selectively operative to transmit torque therebetween the transmission selectively operative in one of a plurality of fixed gear operating range states through selective actuation of a plurality of torque-transfer clutches;the control modules adapted to execute a plurality of algorithms contained therein to effect the following, comprising; code to determine a range of permissible input torques and a range of permissible machine torques from the first electrical machine; code to determine a plurality of costs; and
,code to identify a preferred input torque and a preferred motor torque from the first electrical machine based upon the plurality of costs. - View Dependent Claims (20)
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Specification