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US 12,233,849 B2Granted
System and method for controlling engine starting devices
AssigneeFord Global Technologies, LLC
InventorsMaruthi Ravichandran, Marin Assaliyski, Nicholas D. Moore, Calvin Trescott, Naginder Gogna, Rajit Johri
Life of this patent
Estimating the term…
Abstract
Systems and methods for selecting which of a plurality of engine starting devices starts an internal combustion engine of a hybrid vehicle are presented. In one example, engine starting devices may be selected and operated while a vehicle is operating in a creep mode. The system and method may place a driveline disconnect clutch in a wait state or engage a flywheel starter to improve engine starting.
Claims17
A method for operating a vehicle, comprising:
- via a controller, scheduling an internal combustion engine of the vehicle to be started via closing a driveline disconnect clutch;
- via the controller, increasing a line pressure supplied to the driveline disconnect clutch and delaying starting of the internal combustion engine via closing the driveline disconnect clutch while the line pressure is less than a threshold pressure, a driver demand pedal is not applied, and a gear selector is in a gear engagement position;
- and
- via the controller, cancelling starting of the internal combustion engine via the driveline disconnect clutch in response to the driver demand pedal being applied and the gear selector being in the gear engagement position.
1 more element
A system, comprising:
- an internal combustion engine including a flywheel starter coupled to the internal combustion engine;
- an integrated starter/generator;
- a disconnect clutch positioned in a driveline between the internal combustion engine and the integrated starter/generator;
- a transmission included in the driveline;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to place operation of the disconnect clutch in a wait state, where a torque capacity of the disconnect clutch is constrained below a threshold value, while a line pressure supplied to the disconnect clutch is less than a threshold pressure and an engine start is requested, and additional instructions to start the internal combustion engine via the flywheel starter in response to driver demand pedal position increasing.
3 more elements
A method for operating a vehicle, comprising:
- via a controller, scheduling which of two starting devices start an internal combustion engine of the vehicle in response to a position of a gear selector and driver demand pedal position;
- and
- via the controller, starting the internal combustion engine via a flywheel starter in response to the gear selector being in a gear engagement position and a driver demand pedal being applied, and starting the internal combustion engine via a driveline disconnect clutch in response to the gear selector being in a non-gear engagement position, and starting the internal combustion engine via the driveline disconnect clutch in response to the gear selector being in the gear engagement position and the driver demand pedal not being applied.
Dependencies are inferred from the claim text.