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US 10,343,678 B2Granted
Methods and systems for a driveline dual mass flywheel
AssigneeFord Global Technologies, LLC
InventorsGregory Michael Pietron, James William Loch McCallum, Alex O'Connor Gibson, Seung-Hoon Lee, David Oshinsky
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, compensation is provided for a dual mass flywheel positioned in a vehicle driveline. The approaches may reduce driveline torque disturbances.
Claims20
A method of adjusting operation of a hybrid vehicle driveline, comprising:
- adjusting a torque converter clutch in response to a speed or torque differential across a dual mass flywheel (DMF) positioned in the hybrid vehicle driveline between an engine and a driveline disconnect clutch where the DMF is a driveline component positioned between the engine and the driveline disconnect clutch;
- and
- during an engine start, adjusting torque of a driveline integrated starter/generator in response to a difference between a desired torque converter clutch torque and an actual torque converter clutch torque.
A method of adjusting operation of a hybrid vehicle driveline, comprising:
- engaging a driveline disconnect clutch to rotate an engine via a driveline integrated starter/generator (DISG);
- adjusting the DISG in response to a speed or torque differential across a dual mass flywheel (DMF) positioned in the hybrid vehicle driveline between the engine and the driveline disconnect clutch, where the DMF is a driveline component between the engine and the driveline disconnect clutch;
- and
- during an engine start, adjusting speed of the DISG responsive to torque converter turbine speed and torque converter impeller torque.
1 more element
A hybrid vehicle system, comprising:
- an engine;
- a dual mass flywheel (DMF) including a first side mechanically coupled to the engine;
- a driveline disconnect clutch including a first side mechanically coupled to a second side of the DMF;
- a driveline integrated starter\generator (DISG) including a first side coupled to a second side of the driveline disconnect clutch;
- a torque converter with a torque converter clutch;
- and
- a controller including non-transitory instructions executable to start the engine via closing the driveline disconnect clutch, and instructions to adjust the DISG and torque converter clutch in response to a speed difference across the DMF.
4 more elements
Dependencies are inferred from the claim text.