METHOD FOR STABILIZATION OF MODE AND FIXED GEAR FOR A HYBRID POWERTRAIN SYSTEM
First Claim
1. Method for controlling a powertrain system including an engine mechanically coupled to an electro-mechanical transmission selectively operative in one of a plurality of transmission operating range states and one of a plurality of engine states, comprising:
- determining a current transmission operating range state and engine state;
determining at least one potential transmission operating range state and engine state;
determining preferability factors associated with the current transmission operating range state and engine state, and potential transmission operating range states and engine states;
preferentially weighting the preferability factors for the current transmission operating range state and engine state; and
selectively commanding changing the current transmission operating range state and engine state based upon said preferability factors.
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0 Petitions
Accused Products
Abstract
A powertrain system includes an engine mechanically coupled to an electro-mechanical transmission selectively operative in one of a plurality of transmission operating range states and one of a plurality of engine states. A method for controlling the powertrain system includes determining a current transmission operating range state and a current engine state, determining at least one potential transmission operating range state and engine state, determining preferability factors associated with the current and potential transmission operating range state and the engine state, preferentially weighting the preferability factors for the current transmission operating range state and engine state, and selectively commanding changing the present transmission operating range state and engine state based upon the preferability factors.
225 Citations
20 Claims
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1. Method for controlling a powertrain system including an engine mechanically coupled to an electro-mechanical transmission selectively operative in one of a plurality of transmission operating range states and one of a plurality of engine states, comprising:
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determining a current transmission operating range state and engine state; determining at least one potential transmission operating range state and engine state; determining preferability factors associated with the current transmission operating range state and engine state, and potential transmission operating range states and engine states; preferentially weighting the preferability factors for the current transmission operating range state and engine state; and selectively commanding changing the current transmission operating range state and engine state based upon said preferability factors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Method for determining a new desired transmission operating range state and engine state in a vehicular powertrain comprising:
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providing a first plurality of numerical values, said values representing preferability factors for at least two potential transmission operating range states and engine states; providing a second plurality of numerical values, said second plurality of numerical values representing preferability factors for at least two potential transmission operating range states and engine states, wherein said second plurality of numerical values are at least one plurality of numerical values representing preferability factors for a transmission operating range state and engine state selected from the group consisting of;
current transmission operating range states and engine states, and desired transmission operating range states and engine states;combining said first plurality of numerical values and said second plurality of numerical values to provide a third plurality of numerical values, said third plurality comprising preferability factors for at least two potential transmission operating range states and engine states; and selecting a numerical value from said third plurality as a basis on which to make a decision concerning potential changes to the current transmission operating range state and engine state. - View Dependent Claims (17, 18, 19)
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20. A system for controlling a powertrain system including an engine mechanically coupled to an electro-mechanical transmission selectively operative in one of a plurality of transmission operating range states and one of a plurality of engine states, comprising:
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a microprocessor configured to receive data and provide an output, said data including a first set of preferability factors, a second set of preferability factors relating to a desired operating range state of said transmission, and a third set of preferability factors relating to a current operating range state of said transmission; a control module configured to control shifting events in said transmission, said control module having inputs and outputs, wherein output from said microprocessor is provided as input to said control module, said control module being configured to provide said third set of preferability factors to said microprocessor as an input thereto; and an electro-mechanical transmission in effective electrical communication with output from said control module.
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Specification