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US 8,818,600 B2Granted
Methods and systems for adjusting driveline operation during an accelerator tip-out
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, an engine may be operated at an idle speed while a driveline disconnect clutch separating the engine from a driveline is open in response to a reduction in driver demand torque. Engine torque may be applied to the driveline by simply closing the driveline disconnect clutch.
Claims20
A driveline operating method, comprising:
- providing torque from an engine to a driveline coupled to wheels;
- operating the engine at an idle speed and decoupling the engine from the driveline in response to a reduced driver demand torque;
- and
- providing a constant vehicle deceleration rate during the reduced driver demand torque.
1 more element
A driveline operating method, comprising:
- providing torque from an engine to a driveline coupled to wheels;
- operating the engine at idle speed and decoupling the engine from the driveline in response to a reduced driver demand torque;
- providing a constant vehicle deceleration rate at the reduced driver demand torque;
- and
- accelerating the engine to a speed in response to an increase in driver demand torque after operating the engine at the idle speed.
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;
- and
- a controller including executable instructions stored in non-transitory memory to provide a constant vehicle deceleration rate while idling the engine at a sailing mode idle speed.
4 more elements
Dependencies are inferred from the claim text.