Control of a rolling stop-start vehicle engine
AssigneeFord Global Technologies, LLC
InventorsHafiz Shafeek Khafagy, Daniel Benjamin KOK, Ahmed AWADI, Raed YOUNIS, Mohannad HAKEEM
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Abstract
A vehicle includes electric brakes, an engine with a starter, a battery and a controller. The battery has a voltage and is configured to power the starter, the electric brakes, and the controller. The controller is configured to, in response to a speed of the vehicle falling within a specified range without propulsive demand and while the voltage is greater than an upper voltage that varies based on a charge needed to engage the brakes to stop the vehicle, stop the engine.
Claims19
A method of controlling an engine of a vehicle comprising:
- stopping the engine by a controller in response to
- a speed of the vehicle falling within a specified range in an absence of propulsive demand, and
- a starter battery voltage being greater than a threshold that varies according to the speed.
A vehicle comprising:
- electric brakes;
- an engine including a starter;
- a battery having a voltage and being configured to power the starter and brakes;
- and
- a controller configured to, in response to a speed of the vehicle falling within a specified range without propulsive demand and while the voltage is greater than an upper voltage that varies based on a charge needed to engage the brakes to stop the vehicle, stop the engine.
A vehicle comprising:
- an engine;
- a battery having a voltage and configured to supply power to a starter of the engine;
- and
- a controller configured to, in response to a speed of the vehicle falling within a specified range in an absence of propulsive demand while the voltage is greater than an upper voltage profile that is based on a charge needed to control the vehicle, stop the engine.
Dependencies are inferred from the claim text.