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US 10,513,265 B2Granted
Methods and system for hybrid vehicle regenerative braking
AssigneeFord Global Technologies, LLC
InventorsYanan Zhao, Joseph Jay Torres, Ming Lang Kuang, Lucian Lippok, Hai Yu
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Abstract
Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, and a transmission are described. In one example, regenerative torque and torque of an electronically controlled differential clutch are adjusted to increase utilization of a vehicle's kinetic energy.
Claims19
A driveline method, comprising:
- adjusting a clutch torque of a differential's clutch in response to a difference between a second wheel braking torque and a first wheel braking torque;
- and
- adjusting an electric machine regenerative torque in response to the first wheel braking torque and the first wheel braking torque and the clutch torque.
A driveline operating method, comprising:
- adjusting an electric machine regenerative torque to a value multiplied by two in response to an electronic limited slip differential not being activated;
- and
- adjusting the electric machine regenerative torque to a value of a sum of a first wheel braking torque and the first wheel braking torque and a clutch torque of the electronic limited slip differential's clutch in response to the electronic limited slip differential being activated.
A system, comprising:
- an engine;
- a dual clutch transmission coupled to the engine via a driveshaft;
- a rear drive unit including an electrically controlled limited slip differential, the rear drive unit coupled to the dual clutch transmission;
- an electric machine directly coupled to the rear drive unit;
- and
- a controller including executable instructions stored in non-transitory memory to adjust a torque of the limited slip differential in response to a requested electric machine regenerative torque and a first wheel braking torque.
3 more elements
Dependencies are inferred from the claim text.