Method for determining inertia effects for a hybrid powertrain system
First Claim
1. Method for controlling a hybrid transmission including torque generating devices and an energy storage device connected thereto, the hybrid transmission device configured to transfer power between an input member of the hybrid transmission, an output member of the hybrid transmission connected to a driveline, and the torque generating devices, the method comprising:
- operating the hybrid transmission comprising a planetary gear set in a continuously variable operating range state;
monitoring an operator torque request and a rotational speed of the output member of the hybrid transmission connected to the driveline;
providing a first tractive torque from a first of the torque generating devices through the input member and the hybrid transmission to the driveline;
providing a second tractive torque from a second of the torque generating devices through the hybrid transmission to the driveline independently of the input member;
determining a rotational input acceleration of the input member based upon an inertial effect of the rotational speed of the output member of the hybrid transmission acting through the hybrid transmission upon the input member; and
individually compensating each of the first and second tractive torques from the torque generating devices to meet the operator torque request based upon the rotational input acceleration of the input member.
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Accused Products
Abstract
A method for controlling a hybrid powertrain system based upon determined inertial effects for a continuously variable operating range state includes monitoring an operator torque request and a rotational speed of the output member, determining an inertial effect on an input speed of the input member for a continuously variable operating range state, and controlling motor torque outputs from the electric machines to meet the operator torque request based upon the inertial effect on the input speed of the input member.
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Citations
20 Claims
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1. Method for controlling a hybrid transmission including torque generating devices and an energy storage device connected thereto, the hybrid transmission device configured to transfer power between an input member of the hybrid transmission, an output member of the hybrid transmission connected to a driveline, and the torque generating devices, the method comprising:
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operating the hybrid transmission comprising a planetary gear set in a continuously variable operating range state; monitoring an operator torque request and a rotational speed of the output member of the hybrid transmission connected to the driveline; providing a first tractive torque from a first of the torque generating devices through the input member and the hybrid transmission to the driveline; providing a second tractive torque from a second of the torque generating devices through the hybrid transmission to the driveline independently of the input member; determining a rotational input acceleration of the input member based upon an inertial effect of the rotational speed of the output member of the hybrid transmission acting through the hybrid transmission upon the input member; and individually compensating each of the first and second tractive torques from the torque generating devices to meet the operator torque request based upon the rotational input acceleration of the input member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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 selectively operative in one of a plurality of operating range states to transfer power between the input member and an output member of the transmission device connected to a driveline and the electric machines, the method comprising:
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operating the transmission device comprising a planetary gear set in a continuously variable operating range state; monitoring an operator torque request and a rotational speed of the output member of the transmission device connected to the driveline; providing a first tractive torque from the engine through the input member and the transmission device to the driveline; providing a second tractive torque from one of the electric machines through the transmission device to the driveline independently of the input member; determining a rotational input acceleration of the input member based upon an inertial effect of the rotational speed of the output member of the transmission device acting through the transmission device upon the input member; and individually compensating each of the first and second tractive torques to meet the operator torque request based upon the rotational input acceleration of the input member. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification