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US 10,704,618 B2Granted
Methods and system for operating a driveline disconnect clutch
AssigneeFord Global Technologies, LLC
InventorsRajit Johri, Fazal Urrahman Syed, Justin Panhans, Minku Lee
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a hybrid driveline that includes an engine, a motor/generator, and a driveline disconnect clutch are described. The systems and methods may improve vehicle efficiency while providing expected vehicle operation and performance. In one example, transmission line pressure is adjusted to match driveline disconnect clutch torque capacity to driver demand torque.
Claims12
A driveline operating method, comprising:
- receiving a driver demand torque to a controller, where the driver demand torque is a function of accelerator pedal position;
- determining a desired engine torque from the driver demand torque when an electric machine torque is non-zero;
- and
- adjusting a torque capacity of a driveline disconnect clutch via the controller to equal the desired engine torque plus an offset torque, where adjusting the torque capacity of the driveline disconnect clutch via the controller to equal the desired engine torque plus the offset torque is performed during a first condition, and further comprising adjusting the torque capacity of the driveline disconnect clutch via the controller to equal an actual engine torque plus the offset torque during a second condition.
1 more element
A driveline operating method, comprising:
- receiving a driver demand torque to a controller;
- determining an engine torque from the driver demand torque when an electric machine torque is non-zero;
- and
- via the controller, adjusting a torque capacity of a driveline disconnect clutch to equal the engine torque plus a first offset torque via adjusting a line pressure output from a transmission pump where the transmission pump is a mechanically driven pump, and where adjusting the torque capacity of the driveline disconnect clutch to equal the desired engine torque plus the offset torque is performed during a first condition, and further comprising adjusting the torque capacity of the driveline disconnect clutch via the controller to equal an actual engine torque plus the first offset torque during a second condition.
1 more element
Dependencies are inferred from the claim text.