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US 10,876,617 B2Granted
Methods and system for operating a driveline
AssigneeFord Global Technologies, LLC
InventorsJason Meyer, Kevin Ray Ruybal, Jeffrey Doering, Matthew John Shelton, Steven A. Frait, Walter J. Ortmann
Life of this patent
Estimating the term…
Abstract
Methods and systems for operating a driveline that includes a dual clutch transmission are described. In one example, clutches of the dual clutch transmission may be cooled via activating and adjusting a flow rate of an electric pump. Further, driveline operating modes may be entered or exited in response to clutch operating conditions so that driveline robustness may be enhanced.
Claims11
A driveline operating method, comprising:
- selecting a driveline operating mode from a group including series mode, parallel mode, and series/parallel mode responsive to a transmission's capacity to deliver torque to vehicle wheels, a multiple of transmission output shaft speed, driver demand torque, and a desired electrical torque, the transmission including first and second layshafts coupled via respective first and second clutches to an engine output, a motor coupled downstream of the transmission and coupled via a transmission output to the first and second layshafts;
- and
- operating a driveline in the selected driveline operating mode, including, in response to output shaft speed multiplied by a first gear ratio being less than engine idle speed, fully closing one or more of the first and second transmission clutches.
Dependencies are inferred from the claim text.