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US 8,808,140 B2Granted
Methods and systems for driveline sailing mode entry
AssigneeFord Global Technologies, LLC
InventorsDennis Craig Reed, Alex O'Connor Gibson, Jeffrey Allen Doering, Adam Nathan Banker, Seung-Hoon Lee
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability.
Claims20
A driveline operating method, comprising:
- operating an engine and providing engine torque to a driveline propelling a vehicle in response to a desired torque being greater than a threshold driveline integrated starter/generator torque;
- and
- operating the engine and not providing engine torque to the driveline in response to the desired torque being less than the threshold driveline torque and greater than a threshold engine cranking torque.
A driveline operating method, comprising:
- rotating an engine and providing engine torque to a driveline propelling a vehicle in response to a desired torque being greater than a threshold driveline integrated starter/generator torque;
- rotating the engine and not providing engine torque to the driveline in response to the desired torque being less than the threshold driveline torque and greater than a threshold engine cranking torque;
- and
- not rotating the engine in response to the desired torque being less than the threshold engine cranking torque.
1 more element
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;
- and
- a controller including executable instructions stored in non-transitory memory to idle an engine at a first idle speed while the driveline disconnect clutch is in an open state, and executable instructions to idle the engine at a second idle speed, the second idle speed greater than the first idle speed, while the driveline disconnect clutch is in a closed state.
4 more elements
Dependencies are inferred from the claim text.