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US 10,118,605 B2Granted
Methods and system for a hybrid vehicle
AssigneeFord Global Technologies, LLC
InventorsYanan Zhao, Ming Lang Kuang, Walter Joseph Ortmann
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, a rear drive unit electric machine, an integrated starter/generator, and a transmission are described. In one example, charging of an electric energy storage device may be allocated between the rear drive unit electric machine and the integrated starter/generator to increase charge stored in the electric energy storage device.
Claims19
A driveline operating method, comprising:
- charging an electric energy storage device solely via a rear drive unit electric machine in response to a regenerative torque of the rear drive unit electric machine not being substantially equal to a rear drive unit electric machine torque threshold;
- and
- charging the electric energy storage device via the rear drive unit electric machine and an integrated starter/generator in response to the regenerative torque of the rear drive unit electric machine being substantially equal to the rear drive unit electric machine torque threshold;
- wherein the regenerative torque of the rear drive unit electric machine is a greater value of one of a requested braking torque, a battery charging threshold torque, the rear drive unit electric machine torque threshold, and a vehicle stability torque.
1 more element
A driveline operating method, comprising:
- charging an electric energy storage device solely via a vehicle's kinetic energy in response to an absolute value of a regenerative braking power not being less than an absolute value of a desired battery charging power;
- and
- charging the electric energy storage device via the vehicle's kinetic energy and an engine output torque in response to the absolute value of the regenerative braking power being less than the absolute value of a desired battery charging power.
A driveline operating method, comprising:
- charging an electric energy storage device solely via a vehicle's kinetic energy in response to an absolute value of regenerative braking power not being less than an absolute value of a desired battery charging power;
- charging an electric energy storage device via a vehicle's kinetic energy and engine output torque in response to the absolute value of the regenerative braking power being less than the absolute value of the desired battery charging power;
- and
- adjusting engine torque in response to an urgency to charge the electric energy storage device when charging the electric energy storage device via the vehicle's kinetic energy and engine output torque.
1 more element
Dependencies are inferred from the claim text.