System and method for energy rate balancing in hybrid automatic transmissions
First Claim
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1. A method, comprising:
- controlling a power source output power of a vehicle using a controller, wherein the vehicle has a drive train and a power source, and wherein the controller controls the power source and the drive train;
determining a target drive train output power using the controller, wherein the target drive train output power is determined using a command input;
determining the power source output power using the controller, wherein the target drive train output power is derived from the power source output power; and
wherein the controller determines the power source output power using one or more loss parameters and the target drive train output power;
wherein the loss parameters include a hydraulic power loss, and wherein the hydraulic power loss is calculated as a function of hydraulic loss parameters calculated using measured properties of hydraulic fluid in the drive train; and
wherein the hydraulic loss parameters include a flow rate of a hydraulic fluid in the drive train.
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Abstract
A hybrid system includes a transmission control module, a power source, a transmission, and a drive train. The transmission control module partially operates the hybrid system and receives operating information from various components of the system, calculates power losses in the drive train, and calculates the driving torque needed to reach a target power profile determined from a driver'"'"'s input.
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Citations
19 Claims
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1. A method, comprising:
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controlling a power source output power of a vehicle using a controller, wherein the vehicle has a drive train and a power source, and wherein the controller controls the power source and the drive train; determining a target drive train output power using the controller, wherein the target drive train output power is determined using a command input; determining the power source output power using the controller, wherein the target drive train output power is derived from the power source output power; and
wherein the controller determines the power source output power using one or more loss parameters and the target drive train output power;wherein the loss parameters include a hydraulic power loss, and wherein the hydraulic power loss is calculated as a function of hydraulic loss parameters calculated using measured properties of hydraulic fluid in the drive train; and wherein the hydraulic loss parameters include a flow rate of a hydraulic fluid in the drive train. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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determining a target drive train output power profile using a control module, wherein the target drive train output power profile is determined using a command input; determining an input power using the control module, wherein the input power is sufficient to supply the target drive train output power profile; and controlling a hybrid vehicle according to the output power profile using a control module, wherein the hybrid vehicle has a power source and a drive train, and wherein the control module controls the drive train and the power source; wherein the control module establishes the input power using one or more loss parameters and the target drive train output power profile; wherein the loss parameters include a hydraulic power loss, and wherein the hydraulic power loss is calculated as a function of hydraulic loss parameters; and wherein the hydraulic loss parameters include a flow rate and a temperature of a hydraulic fluid in the drive train. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification