Method for preferential selection of modes and gear with inertia effects for a hybrid powertrain system
First Claim
1. Method for controlling a powertrain system including an engine coupled to an input member of a transmission device including torque generating machines and an energy storage device connected thereto, the transmission operative to transfer power between the input member and an output member of the transmission and the torque generating machines and selectively operative in one of a plurality of operating range states, the method comprising:
- monitoring an operator torque request and a rotational speed of the output member;
determining inertial effects of the transmission comprising inertial effects of the input member and the output member;
determining motor torque outputs from the torque generating machines and an input torque from the engine based upon the inertial effects; and
selecting a preferred operating range state and a preferred input speed of the input member based upon the operator torque request and the inertial effects, said preferred input speed of the input member comprising an engine input speed to the transmission and selected to compensate for additional power required to one of increase and decrease the input speed of the input member resulting from the determined inertial effects.
18 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling a hybrid powertrain system selectively operative in one of a plurality of operating range states including an engine includes monitoring an operator torque request and a rotational speed of the output member, determining inertial effects of the transmissions, determining motor torque outputs from the electrical machines and an engine based upon the inertial effects, and selecting a preferred operating range state and a preferred input speed from the engine to the transmission based upon the operator torque request and the inertial effects.
209 Citations
21 Claims
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1. Method for controlling a powertrain system including an engine coupled to an input member of a transmission device including torque generating machines and an energy storage device connected thereto, the transmission operative to transfer power between the input member and an output member of the transmission and the torque generating machines and selectively operative in one of a plurality of operating range states, the method comprising:
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monitoring an operator torque request and a rotational speed of the output member; determining inertial effects of the transmission comprising inertial effects of the input member and the output member; determining motor torque outputs from the torque generating machines and an input torque from the engine based upon the inertial effects; and selecting a preferred operating range state and a preferred input speed of the input member based upon the operator torque request and the inertial effects, said preferred input speed of the input member comprising an engine input speed to the transmission and selected to compensate for additional power required to one of increase and decrease the input speed of the input member resulting from the determined inertial effects. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Method for controlling a powertrain system including an engine coupled to an input member of a transmission including torque generating machines and an energy storage device connected thereto, the transmission operative to transfer power between the input member and an output member and the torque generating machines and selectively operative in one of a plurality of operating range states, the method comprising:
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monitoring an operator torque request and a rotational speed of the output member; determining inertial effects of the transmission; determining motor torque outputs from the torque generating machines and an input torque from the engine based upon the inertial effects; selecting a preferred operating range state and a preferred input speed of the input member based upon the operator torque request and the inertial effects; monitoring the input torque from the engine to the transmission; iteratively determining motor torques for the torque generating machines based upon the engine input torque, the inertial effects, and the operating range state; determining a power cost for operating at each of the iteratively determined motor torques of the torque generating machines and the engine input torque for each operating range state; selecting a preferred power cost and corresponding desired engine operating point based upon the costs for each of the operating range states; and selecting the preferred operating range state based upon the preferred costs for the operating range states. - View Dependent Claims (8, 9, 10, 11, 12)
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13. Method for controlling a powertrain system including an engine coupled to an input member of an electro-mechanical transmission device including electric machines and an energy storage device connected thereto, the electro-mechanical transmission device operative to transfer power between an input member and an output member of the transmission device and the electric machines and selectively operative in one of a plurality of operating range states, the method comprising:
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monitoring an operator torque request and a rotational speed of the output member; determining an inertial effect of the output member based upon the rotational speed of the output member; determining an inertial effect of the input member; determining motor torque outputs from the electrical machines and an engine based upon the inertial effects; and selecting a preferred operating range state and a preferred input speed of the input member based upon the operator torque request and the inertial effects, said preferred input speed of the input member comprising an engine input speed to the transmission device and selected to compensate for additional power required to one of increase and decrease the input speed of the input member resulting from the inertial effects of the output member and the input member. - View Dependent Claims (14, 15, 16)
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17. Method for controlling a powertrain system including an engine coupled to an input member of an electro-mechanical transmission device including electric machines and an energy storage device connected thereto, the electro-mechanical transmission device operative to transfer power between an input member and an output member and the electric machines and selectively operative in one of a plurality of operating range states, the method comprising:
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monitoring an operator torque request and a rotational speed of the output member; determining an inertial effect of the output member based upon the rotational speed of the output member; determining an inertial effect of the input member; determining motor torque outputs from the electrical machines and an engine based upon the inertial effects; selecting a preferred operating range state based upon the operator torque request and the inertial effects; monitoring an engine input torque to the transmission; iteratively determining motor torques for the electric machines based upon the engine input torque, the inertial effects, and the operating range state; determining a cost for operating at each of the iteratively determined motor torques of the electric machines and the engine input torque for each operating range state; selecting a preferred cost and corresponding desired operating points based upon the costs for each of the operating range states; and selecting the preferred operating range state based upon the preferred costs for the operating range states.
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18. Method for controlling a powertrain system including an engine coupled to an input member of an electro-mechanical transmission device including electric machines and an energy storage device connected thereto, the electro-mechanical transmission device operative to transfer power between an input member and an output member of the transmission device and the electric machines and selectively operative in one of a plurality of operating range states, the method comprising:
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monitoring an operator torque request and a rotational speed of the output member; determining an inertial effect of the output member based upon the rotational speed of the output member; determining an inertial effect of the input member; determining motor torque outputs from the electrical machines and an engine based upon the inertial effects; and selecting a preferred input speed from the engine to the transmission based upon the operator torque request and the inertial effects, said preferred input speed from the engine selected to compensate for additional power required to one of increase and decrease the input speed of the input member resulting from the inertial effects of the output member and the input member. - View Dependent Claims (19, 20, 21)
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Specification