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US 9,381,909 B2Granted
Methods and systems for transitioning between braking modes
AssigneeFord Global Technologies, LLC
InventorsAdam Nathan Banker, Alex O'Connor Gibson, Jeffrey Allen Doering, James William Loch McCallum, David Oshinsky
Life of this patent
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Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between driveline braking and wheel brakes is provided.
Claims20
A method for vehicle braking, comprising:
- providing regenerative driveline braking torque to a vehicle without applying friction braking torque to the vehicle;
- converting regenerative braking into electrical energy;
- and
- reducing regenerative driveline braking torque while increasing friction braking torque to the vehicle in response to an energy storage device state of charge, the friction braking torque increased by a same amount the regenerative driveline braking torque is reduced.
1 more element
A method for vehicle braking, comprising:
- automatically stopping an engine of a vehicle based on operating conditions;
- providing driveline braking torque to the vehicle without applying friction braking torque to the vehicle;
- estimating vehicle wheel torque;
- and
- reducing driveline braking torque while increasing friction braking torque to the vehicle in response to the estimated vehicle wheel torque and an energy storage device state of charge.
2 more elements
A vehicle system, comprising:
- an engine;
- a dual mass flywheel including a first side mechanically coupled to the engine;
- a driveline disconnect clutch mechanically including a first side coupled to a second side of the dual mass flywheel;
- a driveline integrated starter/generator (DISG) including a first side coupled to a second side of the driveline disconnect clutch;
- a transmission selectively coupled to the engine via the driveline disconnect clutch;
- friction brakes;
- and
- a controller including non-transitory instructions executable to automatically stop engine rotation, provide a driveline braking torque via the DISG, apply the friction brakes while reducing the driveline braking torque, and upshift the transmission to a gear in response to a road grade.
5 more elements
Dependencies are inferred from the claim text.