PARALLEL HYBRID ELECTRIC VEHICLE POWER MANAGEMENT SYSTEM AND ADAPTIVE POWER MANAGEMENT METHOD AND PROGRAM THEREFOR
First Claim
1. A method for controlling torque in a hybrid electric vehicle comprising:
- determining a state of charge of an energy storage device;
obtaining a reference state of charge;
obtaining an error from a difference between said determined state of charge and said reference state of charge; and
apportioning torque between a motor and an engine based upon said error, said motor being electrically coupled to said energy storage device and powered by said energy storage device.
0 Assignments
0 Petitions
Accused Products
Abstract
A system, computer readable storage device and method for controlling torque in a hybrid electric vehicle are disclosed. The method comprises determining a state of charge of an energy storage device, obtaining a reference state of charge, obtaining an error from a difference between the determined state of charge and the reference state of charge; and apportioning torque between a motor and an engine based upon the error. The motor is electrically coupled to the energy storage device and powered by the energy storage device. A state of charge (SOC) correction factor is determined based upon the error. The SOC correction factor is used to adjust a torque ratio of motor to engine torque that is determined for a given torque command.
-
Citations
15 Claims
-
1. A method for controlling torque in a hybrid electric vehicle comprising:
-
determining a state of charge of an energy storage device; obtaining a reference state of charge; obtaining an error from a difference between said determined state of charge and said reference state of charge; and apportioning torque between a motor and an engine based upon said error, said motor being electrically coupled to said energy storage device and powered by said energy storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A computer readable storage device storing a computer readable program for causing a computer to execute a method for controlling the torque in a hybrid electric vehicle, said method comprising:
-
determining a state of charge of an energy storage device; obtaining a reference state of charge; obtaining an error from a difference between said determined state of charge and said reference state of charge; and apportioning torque between a motor and an engine based upon said error, said motor being electrically coupled to said energy storage device and powered by said energy storage device.
-
-
15. A torque control system comprising:
-
a combustion engine; an energy storage device; a motor controller coupled to said energy storage device; a motor/generator coupled to said motor controller; and a system controller for apportioning torque between said motor/generator and said combustion engine based upon a difference between a determined state of charge of said energy storage device and a reference state of charge, said motor controller controls said motor/generator based upon using power from said energy storage device.
-
Specification