Vehicle system and method for controlling torque delivery during transmission engagements with road grade and mass estimation
First Claim
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1. A method, comprising:
- controlling a torque output of an electric machine of an electrified vehicle based on estimated loads present during a transmission engagement of the electrified vehicle, the controlling step is performed each time a shift device is moved from a neutral gear to a drive gear, and wherein the estimated loads are based on at least a road grade estimate, a vehicle mass estimate, driveline loads, and transmission pump loads.
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Abstract
A method according to an exemplary aspect of the present disclosure includes, among other things, controlling a torque output of an electric machine of an electrified vehicle based on estimated loads present during a transmission engagement of the electrified vehicle.
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Citations
18 Claims
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1. A method, comprising:
controlling a torque output of an electric machine of an electrified vehicle based on estimated loads present during a transmission engagement of the electrified vehicle, the controlling step is performed each time a shift device is moved from a neutral gear to a drive gear, and wherein the estimated loads are based on at least a road grade estimate, a vehicle mass estimate, driveline loads, and transmission pump loads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicle system, comprising:
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a transmission gearbox; an electric machine that supplies torque to an input shaft of said transmission gearbox; a torque converter disposed between said electric machine and said transmission gearbox; and a control unit in communication with said electric machine and configured to modify a torque output of said electric machine to compensate for variations in road grade and vehicle mass during a transmission engagement. - View Dependent Claims (15, 16, 17, 18)
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Specification