Condition-based powertrain control system
First Claim
1. A powertrain system comprising:
- an engine;
a cooling system connected to the engine and having one or more actuators;
a controller connected to the engine and the cooling system, the controller comprises a multivariable controller that includes an off-line portion configured to operate without input from an operating engine and an on-line portion configured to operate with input from an operating engine;
one or more sensors in communication with the controller and configured to sense values of one or more variables of the engine and/or the cooling system; and
wherein the controller is configured to;
control positions of the one or more actuators of the cooling system;
receive values for one or more variables sensed by the one or more sensors during operation of the engine, where at least one received value for a sensed variable is indicative of one or more conditions of the engine and/or the cooling system; and
adjust one or more positions of the actuators of the cooling system to drive a value of the one or more conditions to associated condition set point trajectories for the engine and/or cooling system.
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Accused Products
Abstract
A system and approach for development of setpoints for a controller of a powertrain system. The controller may be parametrized as a function of setpoints to provide performance variables that are considered acceptable by a user or operator for current operating conditions of the engine or powertrain. The controller may determine set point trajectories in real time during operation of the powertrain system and determine positions of manipulated variables do drive controlled variables to associated and determined set point trajectories. The present system and approach may determine set point trajectories for powertrain conditions on-line and in real time, whereas set point trajectories have previously been determined off-line for powertrain control.
524 Citations
21 Claims
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1. A powertrain system comprising:
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an engine; a cooling system connected to the engine and having one or more actuators; a controller connected to the engine and the cooling system, the controller comprises a multivariable controller that includes an off-line portion configured to operate without input from an operating engine and an on-line portion configured to operate with input from an operating engine; one or more sensors in communication with the controller and configured to sense values of one or more variables of the engine and/or the cooling system; and wherein the controller is configured to; control positions of the one or more actuators of the cooling system; receive values for one or more variables sensed by the one or more sensors during operation of the engine, where at least one received value for a sensed variable is indicative of one or more conditions of the engine and/or the cooling system; and adjust one or more positions of the actuators of the cooling system to drive a value of the one or more conditions to associated condition set point trajectories for the engine and/or cooling system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A powertrain thermal management system comprising:
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a multivariable controller that includes an off-line portion configured to operate without input from an operating engine and on-line portion configured to operate with input from an operating engine, the multivariable controller comprising; a memory; a processor in communication with the memory; and an input/output port in communication with one or more of the memory and the processor; and wherein the controller is configured to; receive, via the input/output port, values for one or more variables sensed by sensors monitoring an engine and/or cooling system connected to the engine; determine a set point trajectory for one or more engine components and/or cooling system temperatures based, at least in part, on the received values for one or more variables; and send, via the input/output port, control signals to adjust positions of engine actuators and/or cooling system actuators to drive values of the engine component temperatures to the determined set point trajectories based, at least in part, on the received values for one or more variables. - View Dependent Claims (15, 16)
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17. A method of thermal management of a powertrain system, the method comprising:
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receiving a value for one or more variables sensed in an operating engine; determining a set point trajectory for a temperature condition of the engine based, at least in part, on the received value for one or more variables sensed in the operating engine; updating the set point trajectory for the temperature condition of the engine during operating of the engine in view of one or more received values for the one or more variable sensed in the operating engine; and outputting one or more control signals controlling positions of actuators of the engine and/or positions of actuators of a cooling system connected to the engine during operation of the engine; and wherein the control signals are configured to adjust one or more positions of the actuators of the engine and/or of the cooling system to drive a value of the temperature condition to the determined set point trajectory for the temperature condition. - View Dependent Claims (18, 19)
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20. A powertrain system comprising:
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an engine; a cooling system connected to the engine and having one or more actuators; a controller connected to the engine and the cooling system; one or more sensors in communication with the controller and configured to sense values of one or more variables of the engine and/or the cooling system; and wherein the controller is configured to; control positions of the one or more actuators of the cooling system; receive values for one or more variables sensed by the one or more sensors during operation of the engine, where at least one received value for a sensed variable is indicative of one or more conditions of the engine and/or the cooling system; adjust one or more positions of the actuators of the cooling system to drive a value of the one or more conditions to associated condition set point trajectories for the engine and/or cooling system; and update the condition set point trajectories during operation of the engine and/or cooling system in view of received values for one or more variables sensed by the one or more sensors during operation of the engine.
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21. A powertrain thermal management system comprising:
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a controller comprising; a memory; a processor in communication with the memory; and an input/output port in communication with one or more of the memory and the processor; and wherein the controller is configured to; receive, via the input/output port, values for one or more variables sensed by sensors monitoring an engine and/or cooling system connected to the engine; determine a set point trajectory for one or more engine components and/or cooling system temperatures based, at least in part, on the received values for one or more variables; send, via the input/output port, control signals to adjust positions of engine actuators and/or cooling system actuators to drive values of the engine component temperatures to the determined set point trajectories based, at least in part, on the received values for one or more variables; and wherein the engine component and/or cooling system temperatures include one or more of; engine housing material temperature; engine intake manifold air temperature; engine exhaust manifold air temperature; engine oil temperature; and transmission oil temperature.
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Specification